pass through
cat /etc/shells file to see that several shells have been installed
[root@dev ~]# cat /etc/shells /bin/sh /bin/bash /sbin/nologin /bin/dash [root@dev ~]#
Check the version of bash
bash -version
[root@dev ~]# bash -version GNU bash, version 4.1.2(1)-release (x86_64-redhat-linux-gnu) Copyright (C) 2009 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software; you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. [root@dev ~]#