diff --git a/bash.spec b/bash.spec
index 545e62f22977bee4bbcc95ea5634e1d25c2e35f3..df3060991ad3e796e21cf165e37cb3691ae8a566 100644
--- a/bash.spec
+++ b/bash.spec
@@ -1,6 +1,6 @@
 Name:     bash
 Version:  5.0
-Release:  17
+Release:  18
 Summary:  It is the Bourne Again Shell
 License:  GPLv3
 URL:      https://www.gnu.org/software/bash
@@ -88,6 +88,40 @@ autoconf
 
 %install
 %make_install install-headers
+
+# make manpages for bash builtins as per suggestion in DOC/README
+pushd doc
+sed -e '
+/^\.SH NAME/, /\\- bash built-in commands, see \\fBbash\\fR(1)$/{
+/^\.SH NAME/d
+s/^bash, //
+s/\\- bash built-in commands, see \\fBbash\\fR(1)$//
+s/,//g
+b
+}
+d
+' builtins.1 > man.pages
+for i in echo pwd test kill; do
+  sed -i -e "s,$i,,g" man.pages
+  sed -i -e "s,  , ,g" man.pages
+done
+
+install -p -m 644 builtins.1 %{buildroot}%{_mandir}/man1/builtins.1
+
+for i in `cat man.pages` ; do
+  echo .so man1/builtins.1 > %{buildroot}%{_mandir}/man1/$i.1
+  chmod 0644 %{buildroot}%{_mandir}/man1/$i.1
+done
+popd
+
+# Link bash man page to sh so that man sh works.
+ln -s bash.1 %{buildroot}%{_mandir}/man1/sh.1
+
+# Not for printf, true and false (conflict with coreutils)
+rm -f %{buildroot}/%{_mandir}/man1/printf.1
+rm -f %{buildroot}/%{_mandir}/man1/true.1
+rm -f %{buildroot}/%{_mandir}/man1/false.1
+
 ln -sf bash %{buildroot}%{_bindir}/sh
 install -pDm 644 %SOURCE1 %{buildroot}/etc/skel/.bashrc
 install -pDm 644 %SOURCE2 %{buildroot}/etc/skel/.bash_profile
@@ -129,9 +163,16 @@ make check
 %doc %{_docdir}/%{name}/*
 %{_infodir}/%{name}.info*
 %{_mandir}/man1/*.gz
+%{_mandir}/*/..1*
 %exclude %{_infodir}/dir
 
 %changelog
+* Fri Aug 26 2022 yueyuankun <yueyuankun@kylinos.cn> - 5.0-18
+- Type:enhancement
+- ID:NA
+- SUG:NA
+- DESC:add manpages
+
 * Fri Aug 12 2022 panxiaohe <panxh.life@foxmail.com> - 5.0-17
 - fix bugfix-Forbidden-non-root-user-to-clear-history.patch