shell编程-概述

1.查看linux支持的shell

[wirelessgroup1@jxq-wn-wap21 etc]$ cat /etc/shells
/bin/sh
/bin/bash
/sbin/nologin
/bin/tcsh
/bin/csh
/bin/zsh
/bin/ksh

2.切换shell

每个shell都有自己典型的外观

[wirelessgroup1@jxq-wn-wap21 etc]$ sh
sh-3.2$ 

sh-3.2$ bash
[wirelessgroup1@jxq-wn-wap21 etc]$ 

3.查看用户默认的shell

[wirelessgroup1@jxq-wn-wap21 etc]$ cat /etc/passwd
root:x:0:0:root:/root:/bin/bash
wireless_group4:x:533:533::/home/wireless_group4:/bin/bash