linux之for循环

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我是靠谱客的博主包容期待，这篇文章主要介绍linux之for循环，现在分享给大家，希望可以做个参考。

这里写图片描述

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[root@localhost rootCodeFiles]# cat kill_user.sh 
#!/bin/sh

#the script to kill logine user

username=$1
/bin/ps -aux | /bin/grep $username | /bin/awk '{print $2}' > /tmp/temp.pid

killid=`cat /tmp/temp.pid`

for PID in $killid
do
        /bin/kill -9 $PID 2> /dev/null
done

[root@localhost rootCodeFiles]#

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[root@localhost rootCodeFiles]# cat for_test.sh 
#!/bin/sh

for DAY in Sunday Monday Tuesday Wednesday Thursday Friday Saturday
do
        echo "today is : $DAY"
done
[root@localhost rootCodeFiles]# sh for_test.sh 
today is : Sunday
today is : Monday
today is : Tuesday
today is : Wednesday
today is : Thursday
today is : Friday
today is : Saturday
[root@localhost rootCodeFiles]#