001-cut 的用法

[root@zabbix ~]# cut -d ":" -f , /etc/passwd
root:
bin:
daemon:
adm:
lp:
sync:
shutdown:
halt:
mail:
operator:
games:
ftp:
nobody:
systemd-network:
dbus:
polkitd:
sshd:
postfix:
chrony:
apache:
zabbix:
mysql:

利用cut编写批量删除用户的脚本

#!/bin/bash

for user in `cat /etc/passwd | grep /bin/bash | grep -v root | cut -d ":" -f `
do
    #echo $user
    userdel $user
done