linux支持的shell种类

通过

cat /etc/shells文件查看已经安装了几种shell

[root@dev ~]# cat /etc/shells
/bin/sh
/bin/bash
/sbin/nologin
/bin/dash
[root@dev ~]# 

查看bash的版本

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 ~]#