diff --git "a/04 \351\237\251\346\226\207\346\235\260\345\244\247\345\270\205\345\223\245/\347\224\250\346\210\267\344\270\216\346\226\207\344\273\266\347\256\241\347\220\206.md" "b/04 \351\237\251\346\226\207\346\235\260\345\244\247\345\270\205\345\223\245/\347\224\250\346\210\267\344\270\216\346\226\207\344\273\266\347\256\241\347\220\206.md" new file mode 100644 index 0000000000000000000000000000000000000000..8fb0d6c2615b63aabcd775e9105336aabb8f5237 --- /dev/null +++ "b/04 \351\237\251\346\226\207\346\235\260\345\244\247\345\270\205\345\223\245/\347\224\250\346\210\267\344\270\216\346\226\207\344\273\266\347\256\241\347\220\206.md" @@ -0,0 +1,230 @@ +| # 用户与文件权限的管理 | | | +| ---------------------- | ------------------------------------------------------------ | ------------------------------------------------------------ | +| | [2](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_2) | | +| | [3](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_3) | 课后作业： | +| | [4](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_4) | | +| | [5](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_5) | - 什么是linux 硬连接和软连接（快捷方式） | +| | [6](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_6) | | +| | [7](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_7) | 1. ***\*硬连接（Hard Link）\****： | +| | [8](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_8) | | +| | [9](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_9) | * 硬连接是文件系统中两个或多个文件名指向同一个文件的inode（文件系统对象的元数据）。这意味着，只要有一个硬连接指向一个文件，即使原始文件被删除，只要至少有一个硬连接存在，该文件在系统中仍然可以被访问，直到所有的硬连接都被删除。 | +| | [10](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_10) | * 特点： | +| | [11](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_11) | * 硬连接创建时，会直接连接到目标文件的inode，所以多个硬连接的文件具有相同的权限、所有者和时间戳。 | +| | [12](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_12) | * 硬连接不能链接到目录，也不能链接到同一个目录下的其他文件。 | +| | [13](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_13) | * 使用`ln -s`命令创建硬链接时，需要明确指定`-h`或`--hard`选项，如`ln -s source destination`。 | +| | [14](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_14) | 2. ***\*软连接（Soft Link，也称为符号链接）\****： | +| | [15](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_15) | | +| | [16](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_16) | * 软连接是文件系统中创建的一个指向其他文件或目录的特殊文件，它包含一个指向目标的路径。软链接可以是目录到目录、文件到文件或文件到目录。 | +| | [17](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_17) | * 特点： | +| | [18](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_18) | * 创建软连接时，会创建一个新的文件，包含一个指向目标文件或目录的路径信息，而不是目标的内容。 | +| | [19](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_19) | * 软链接可以跨越不同的目录，甚至不同的文件系统。 | +| | [20](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_20) | * 删除目标文件或目录后，软链接会失效，因为它指向的是一个已不存在的路径。 | +| | [21](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_21) | * 创建软链接通常使用`ln -s`命令，如果没有指定类型，默认创建软链接。 | +| | [22](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_22) | | +| | [23](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_23) | 1. 用户管理 | +| | [24](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_24) | 1. 分类 | +| | [25](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_25) | - 超级用户 root ，最高权限，不受一般权限的限制，编号0 ,提示符是 # | +| | [26](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_26) | - 内置用户 ：由系统自动创建 ，编号1-999 | +| | [27](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_27) | - 普通用户 ：我们用root权限手动创建用户，受权限控制 ，编号从1000依次递增 | +| | [28](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_28) | - 创建普通用户test会自动创建他的编号u ，他原生组g（和用户名同名test），附加组 G (test),初始化的时候一定是u 1000(test), 1000(test),1000(test) | +| | [29](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_29) | - 普通不能创建普通用户，只有root | +| | [30](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_30) | - 提示符是 $ | +| | [31](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_31) | - u user 用户 uid | +| | [32](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_32) | - group 组 gid | +| | [33](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_33) | - Group | +| | [34](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_34) | 2. 用户 | +| | [35](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_35) | 1. 添加 | +| | [36](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_36) | - useradd -m -d /home/YYY -s /bin/bash XXX | +| | [37](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_37) | - adduser | +| | [38](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_38) | 2. 删除 | +| | [39](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_39) | - userdel XXX | +| | [40](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_40) | - userdel -r xxx 删除用户和相关的目录 | +| | [41](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_41) | 3. 修改 | +| | [42](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_42) | - usermod -G 组号\|组名 XXX ： usermod -G stu u15 覆盖原来的附加组（扩展组） | +| | [43](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_43) | - usermod -aG 组号\|组名 XXX ： usermod -aG stu u15 保留原有附加组前提下，追加新的附加组 | +| | [44](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_44) | - usermod -s /bin/aaa u15 | +| | [45](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_45) | 4. 密码 | +| | [46](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_46) | - passwd 用户名 root修改指定用户的密码 | +| | [47](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_47) | - passwd 修改当前登录用户的密码，即自己的密码 | +| | [48](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_48) | 5. 查询 | +| | [49](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_49) | - id 用户名 指定用户 | +| | [50](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_50) | - /etc/passwd | +| | [51](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_51) | 6. 切换 | +| | [52](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_52) | - su 仅仅切换了身份，不切换目录和shell等环境 | +| | [53](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_53) | - su - 完全切换，连环境变量和目录一起切换 | +| | [54](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_54) | 3. 用户组：编号也是从1000开始 | +| | [55](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_55) | 1. 添加 | +| | [56](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_56) | - groupadd student 添加一个组,编号自动的 | +| | [57](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_57) | - groupadd -g 8888 student2 添加一个组,编号自动的 | +| | [58](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_58) | 2. 删除 groupdel 组号\|名 | +| | [59](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_59) | 3. 修改 groupmod | +| | [60](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_60) | 4. 查询 | +| | [61](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_61) | - /etc/group | +| | [62](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_62) | 2. 文件管理 | +| | [63](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_63) | - 文件属性：10个字符，连接数或子目录数，文件拥有者，文件所属的用户组，文件大小，修改时间，文件\|目录名 | +| | [64](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_64) | - 10个字符： | +| | [65](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_65) | - 第1位 文件类型 | +| | [66](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_66) | - d 目录 | +| | [67](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_67) | - -普通文件 | +| | [68](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_68) | - l 连接文件 | +| | [69](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_69) | - b c s p 等其它文件 | +| | [70](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_70) | - 后9位分别代表了：三种角色的权限，每3位一组 | +| | [71](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_71) | - 2-4 拥有者权限 | +| | [72](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_72) | - 5-7 用户组的权限 | +| | [73](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_73) | - 8-10 其它人的权限 | +| | [74](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_74) | - 基本权限 | +| | [75](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_75) | - 读 r (read) ： 打开并显示文件内容，查看目录基本信息 | +| | [76](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_76) | - 写 w (write) ： 文件，可以写入，修改，删除内容，目录：创建，修改，删除文件\|目录 | +| | [77](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_77) | - 执行 x (execute) ：文件如果是二进制或脚本文件就可以执行，目录表示可以进入 | +| | [78](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_78) | - 特殊权限 | +| | [79](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_79) | - SUID | +| | [80](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_80) | - GUID | +| | [81](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_81) | - 隐藏权限 | +| | [82](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_82) | - lsattr 列出隐藏权限 | +| | [83](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_83) | - chattr 修改隐藏权限 | +| | [84](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_84) | - +i 增加，不得任意更动文件或目录的效果 | +| | [85](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_85) | - -i 消除 | +| | [86](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_86) | - | +| | [87](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_87) | - 权限表示 | +| | [88](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_88) | - 字符 | +| | [89](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_89) | - 数字 | +| | [90](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_90) | - r == 4 | +| | [91](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_91) | - w == 2 | +| | [92](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_92) | - x == 1 | +| | [93](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_93) | - 身份表示 | +| | [94](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_94) | - u 拥有者 (user) | +| | [95](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_95) | - g 用户组（group） | +| | [96](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_96) | - o 其它人 （other） | +| | [97](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_97) | - a 所有人 （all） | +| | [98](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_98) | - 修改权限 :root可以改任何文件，而拥有者可以改自己拥有文件 | +| | [99](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_99) | - chmod 要的权限 文件\|目录 | +| | [100](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_100) | - chmod u+w,g-r,o=rw 1.txt | +| | [101](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_101) | - chmod 755 1.txt | +| | [102](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_102) | - 修改拥有者 | +| | [103](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_103) | - chown 用户名 文件名 | +| | [104](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_104) | - 修改文件所属的用户组 | +| | [105](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_105) | - chgrp 组名\|号 文件\|目录 | +| | [106](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_106) | - sudo | +| | [107](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_107) | - 修改 /etc/sudoers 文件 | +| | [108](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_108) | - 将 用户追加到sudo组 ：sudo usermod -aG sudo u15 | +| | [109](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_109) | 3. Linux执行命令的过程 | +| | [110](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_110) | 1. 如果这个命令是绝对路径，就直接执行 | +| | [111](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_111) | 2. 如果不是， | +| | [112](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_112) | 1. 查一下是不是别名，是执行对应的命令 | +| | [113](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_113) | 2. 从环境变量中找这个命令 $PATH中的路径依次查找这个命令 | +| | [114](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_114) | 3. 本地也没有，就报错了。 | +| | [115](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_115) | | +| | [116](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_116) | | +| | [117](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_117) | | +| | [118](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_118) | ### 权限管理练习 | +| | [119](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_119) | | +| | [120](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_120) | 1. 创建/guanli 目录，在/guanli下创建zonghe 和 jishu 两个目录（一条命令） | +| | [121](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_121) | ``` | +| | [122](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_122) | mkdir -p /guanli/zonghe /guanli/jishu | +| | [123](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_123) | ``` | +| | [124](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_124) | 2. 添加组帐号zonghe、caiwu、jishu，GID号分别设置为2001、2002、2003 | +| | [125](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_125) | ``` | +| | [126](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_126) | sudo groupadd -g 2001 zonghe | +| | [127](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_127) | sudo groupadd -g 2002 caiwu | +| | [128](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_128) | sudo groupadd -g 2003 jishu | +| | [129](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_129) | ``` | +| | [130](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_130) | 3. 创建jerry、kylin、tsengia、obama用户，其中的kylin用户帐号在2020年12月30日后失效 | +| | [131](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_131) | ``` | +| | [132](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_132) | sudo useradd jerry | +| | [133](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_133) | sudo useradd kylin | +| | [134](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_134) | sudo useradd tsengia | +| | [135](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_135) | sudo useradd obama | +| | [136](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_136) | sudo chage -E 2020-12-30 kylin | +| | [137](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_137) | ``` | +| | [138](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_138) | 4. 将jerry、kylin、tsengia、obama等用户添加到zonghe组内 | +| | [139](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_139) | ``` | +| | [140](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_140) | sudo usermod -aG zonghe jerry | +| | [141](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_141) | sudo usermod -aG zonghe kylin | +| | [142](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_142) | sudo usermod -aG zonghe tsengia | +| | [143](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_143) | sudo usermod -aG zonghe obama | +| | [144](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_144) | | +| | [145](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_145) | ``` | +| | [146](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_146) | 5. 创建handy、cucci用户，其中cucci帐号的登录Shell设置为“/sbin/nologin” | +| | [147](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_147) | ``` | +| | [148](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_148) | sudo useradd handy | +| | [149](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_149) | sudo useradd -s /sbin/nologin cucci | +| | [150](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_150) | ``` | +| | [151](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_151) | 6. 将handy、cucci等用户添加到jishu组内 | +| | [152](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_152) | ``` | +| | [153](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_153) | sudo usermod -aG jishu handy | +| | [154](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_154) | sudo usermod -aG jishu cucci | +| | [155](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_155) | ``` | +| | [156](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_156) | | +| | [157](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_157) | 7. 将上述的所有用户均要求加入到guanli组内 | +| | [158](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_158) | ``` | +| | [159](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_159) | sudo groupadd guanli | +| | [160](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_160) | sudo usermod -aG guanli jerry | +| | [161](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_161) | sudo usermod -aG guanli kylin | +| | [162](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_162) | sudo usermod -aG guanli tsengia | +| | [163](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_163) | sudo usermod -aG guanli obama | +| | [164](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_164) | sudo usermod -aG guanli handy | +| | [165](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_165) | sudo usermod -aG guanli cucci | +| | [166](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_166) | ``` | +| | [167](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_167) | 8. 将zonghe组内的obama用户删除 | +| | [168](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_168) | ``` | +| | [169](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_169) | sudo gpasswd -d obama zonghe | +| | [170](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_170) | ``` | +| | [171](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_171) | 9. 为jerry用户设置密码为“123456”（使用普通方法）为cucci用户设置密码为“redhat” | +| | [172](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_172) | ``` | +| | [173](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_173) | echo "jerry:123456" \| sudo chpasswd | +| | [174](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_174) | echo "cucci:redhat" \| sudo chpasswd | +| | [175](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_175) | ``` | +| | [176](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_176) | 10. 将jerry用户锁定，并查看锁定状态 | +| | [177](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_177) | ``` | +| | [178](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_178) | sudo passwd -l jerry | +| | [179](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_179) | sudo passwd -S jerry | +| | [180](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_180) | ``` | +| | [181](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_181) | 11. 打开两个xshell窗口，通过（who 或者 w）命令查看连接状态，并通过fuser杀掉其中一个 | +| | [182](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_182) | ``` | +| | [183](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_183) | w | +| | [184](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_184) | ``` | +| | [185](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_185) | 12. 查看cucci用户，属于那些组，并查看其详细信息 | +| | [186](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_186) | ``` | +| | [187](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_187) | sudo id cucci | +| | [188](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_188) | sudo getent passwd cucci | +| | [189](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_189) | ``` | +| | [190](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_190) | 13. 手工创建账号student（预留） | +| | [191](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_191) | ``` | +| | [192](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_192) | sudo useradd student | +| | [193](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_193) | ``` | +| | [194](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_194) | 14. 设置权限及归属：/guanli目录属组设为guanli， /guanli/zonghe目录的属组设为zonghe /guanli/jishu目录的属组设为jishu，设置3个目录都是禁止其他用户访问的权限 | +| | [195](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_195) | ``` | +| | [196](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_196) | chown -R :guanli /home/yan/guanli | +| | [197](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_197) | chown -R :zonghe /home/yan/guanli/zonghe | +| | [198](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_198) | chown -R :jishu /home/yan/guanli/jishu | +| | [199](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_199) | chmod 770 guanli guanli/zonghe guanli/jishu | +| | [200](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_200) | | +| | [201](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_201) | ``` | +| | [202](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_202) | 15. 建立公共目录/ceshi允许技术组内的所有用户读取、写入、执行文件， 禁止其他用户读、写、执行 | +| | [203](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_203) | ``` | +| | [204](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_204) | cd / | +| | [205](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_205) | sudo mkdir ceshi | +| | [206](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_206) | sudo chown -R :jishu /ceshi | +| | [207](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_207) | sudo chmod 770 /ceshi | +| | [208](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_208) | ``` | +| | [209](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_209) | 16. 清除jerry用户密码 | +| | [210](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_210) | ``` | +| | [211](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_211) | sudo passwd -d jerry | +| | [212](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_212) | ``` | +| | [213](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_213) | 17. 锁定cucci用户密码并查看状态 | +| | [214](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_214) | ``` | +| | [215](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_215) | sudo passwd -l cucci | +| | [216](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_216) | sudo passwd -S cucci | +| | [217](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_217) | ``` | +| | [218](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_218) | 18. 修改obama用户的UID为8888 | +| | [219](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_219) | ``` | +| | [220](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_220) | sudo usermod -u 8888 obama | +| | [221](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_221) | ``` | +| | [222](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_222) | 19. 通过passwd命令修改kylin用户的最长密码使用期限为60天 | +| | [223](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_223) | ``` | +| | [224](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_224) | sudo chage -M 60 kylin | +| | [225](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_225) | ``` | +| | [226](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_226) | 20. 通过id groups等命令查看用户handy信息 | +| | [227](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_227) | ``` | +| | [228](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_228) | id handy | +| | [229](https://gitee.com/implementation-level-22/linux-fundamentals/commit/ad981829a3678c209cdc44bcb5e1d320e1c4637d#75538726a427a0b4531e1794107f69f3cae7afa1_0_229) | groups handy | \ No newline at end of file