diff --git a/content/en/docs/Installation/installation-preparations.md b/content/en/docs/Installation/installation-preparations.md
index d2c7c150e474250a861a0d9f47c4869ecb53600d..0d2b9896ee13b8b584d3c6dcd185a1392997640a 100644
--- a/content/en/docs/Installation/installation-preparations.md
+++ b/content/en/docs/Installation/installation-preparations.md
@@ -71,13 +71,13 @@ To verify the file integrity, perform the following operations:
 1.  Obtain the verification value in the verification file. Run the following command:
 
     ```
-    #cat openEuler-20.03-LTS-aarch64-dvd.iso.sha256sum 
+    $ cat openEuler-20.03-LTS-aarch64-dvd.iso.sha256sum 
     ```
 
 2.  Calculate the SHA256 verification value of the file. Run the following command:
 
     ```
-    #sha256sum openEuler-20.03-LTS-aarch64-dvd.iso
+    $ sha256sum openEuler-20.03-LTS-aarch64-dvd.iso
     ```
 
     After the command is run, the verification value is displayed.
diff --git "a/content/zh/docs/Installation/\345\256\211\350\243\205\345\207\206\345\244\207.md" "b/content/zh/docs/Installation/\345\256\211\350\243\205\345\207\206\345\244\207.md"
index fc69c9b89a41be236d2ca904cbd2fd9f932aaf05..ed335596c89c7ace3f03304c5796daac9fbdde27 100644
--- "a/content/zh/docs/Installation/\345\256\211\350\243\205\345\207\206\345\244\207.md"
+++ "b/content/zh/docs/Installation/\345\256\211\350\243\205\345\207\206\345\244\207.md"
@@ -70,13 +70,13 @@ iso文件：openEuler-20.03-LTS-aarch64-dvd.iso
 1.  获取校验文件中的校验值。执行命令如下：
 
     ```
-    #cat openEuler-20.03-LTS-aarch64-dvd.iso.sha256sum 
+    $ cat openEuler-20.03-LTS-aarch64-dvd.iso.sha256sum 
     ```
 
 2.  计算文件的sha256校验值。执行命令如下：
 
     ```
-    #sha256sum openEuler-20.03-LTS-aarch64-dvd.iso
+    $ sha256sum openEuler-20.03-LTS-aarch64-dvd.iso
     ```
 
     命令执行完成后，输出校验值。