| LC_ALL=C ifconfig | grep 'inet addr:'| grep -v '127.0.0.1' | cut -d: -f2 | awk '{ print $1}' |
| #! /bin/sh ＃while 语句 echo "enter passwd" read passwd while [ $passwd != "aaa" ];do echo "sorry try again" read passwd done ＃for 语句 #! /bin/bash for i in a b c; do echo "$in" done #case 语句 #! /bin/sh echo "Enter a number" read number case $number in 1) echo "you number is 1" ;; 2) echo "yo number is 2" ;; *) exit 1 ;; esac #if else elif fi #! /bin/sh echo "Is it morning? Please answer yes or no." read YES_OR_NO if [ "$YES_OR_NO" = "yes" ]; then echo "Good morning!" elif [ "$YES_OR_NO" = "no" ]; then echo "Good afternoon!" else echo "Sorry, $YES_OR_NO not recognized. Enter yes or no." exit 1 fi exit 0 |
下载整站
| wget -mk http://www.imop.us |
判断文件的存在与否
if [ ! -f /home/testfile ] then echo "tesfile note exist" fi |
