001-cut 的用法

[root@zabbix ~]# cut -d ":" -f 1,3 /etc/passwd
root:0
bin:1
daemon:2
adm:3
lp:4
sync:5
shutdown:6
halt:7
mail:8
operator:11
games:12
ftp:14
nobody:99
systemd-network:192
dbus:81
polkitd:999
sshd:74
postfix:89
chrony:998
apache:48
zabbix:997
mysql:27

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 1`
do
    #echo $user
    userdel $user
done