1，简单数组打印,使用for和while
#!/bin/sh#city=(`ls /etc/init.d`); //也利用ls获得数组city=("liuzhou" "wuhan" "beijng" "heifei" "liaoning" "shanghai" "xian");number=${#city[@]} //计算出数组个数 echo "use while: "i=0 while [ $i -lt $number ]do echo -n "${city[$i]} " let i=i+1;done echo "" echo "There are $number" echo "use for: "for var in ${city[@]}; do echo -n "$var "done echo "" echo "There are $number"
2，读取网卡信息，并存储在文件（使用ifconfig和awk）
#!/bin/sh#follow an argument such as "./get_net.sh [argument]"#read the information:"ip" "netmask" "mac"#and store the network information in filePWD=`pwd`network=("eth0" "lo")if [ $# != 1 ]; then echo "follow only one argument" echo "example: ./get_net.sh [argument]" exitfiif [ "$1"x = "${network[0]}"x ]; then //判断两个字符串是否一致 IPADDR=`ifconfig ${network[0]} | grep "inet addr:" | awk -F"Bcast:" '{print$1}' \ | awk -F":" '{print$2}'` MAC=`ifconfig ${network[0]} | grep "Ethernet" | awk -F"HWaddr " '{print$2}'` NETMASK=`ifconfig ${network[0]} | grep "inet addr:" | awk -F"Mask:" '{print$2}'` if [ -f $PWD/${network[0]} ]; then //如果文件以及存在，先删除，再存储 rm -rf $PWD/${network[0]} fi echo ip=$IPADDR >> $PWD/${network[0]} echo mac=$MAC >> $PWD/${network[0]} echo netmask=$NETMASK >> $PWD/${network[0]}elif [ "$1"x = "${network[1]}"x ]; then IPADDR=`ifconfig lo | grep "inet addr" | awk -F"Mask:" '{print$1}' | awk -F":" '{print$2}'` NETMASK=`ifconfig lo | grep "inet addr" | awk -F"Mask:" '{print$2}'` if [ -f $PWD/${network[1]} ]; then rm -rf $PWD/${network[1]} fi echo ip=$IPADDR >> $PWD/${network[1]} echo netmask=$NETMASK >> $PWD/${network[1]}else echo "illegal argument, use "ifconfig -a" to get information" echo "example: ./get_net.sh [argument]" exitfi
3，一键解压脚本
#!/bin/bash#Uncompress all kinds of files#such as:.tar.bz2 .tar.gz .bz2 .gz .zip .tgz .tbz .rar .Z .7zif [ $# != 1 ]; then echo "follow only a file" echo "./autoex.sh [argument]"fiif [ -f $1 ] ; then case $1 in *.tar.bz2) tar -xjf $1;; *.tar.gz ) tar -xzf $1;; *.tar) tar -xf $1;; *.bz2) bunzip2 -d $1;; *.rar) rar x $1 ;; *.gz) gunzip -d $1;; *.zip) unzip $1;; *.tgz) tar -xzf $1;; *.tbz2) tar -xjf $1;; *.7z) 7z x $1;; *.Z) uncompress $1 ;; *) echo "'$1' cannot be extracted via extract()" ;; esacelse echo "'$1' is not a valid file"fi
补充shell下内部参数：
$0 ---- 当前程序的名称，而$1,$2 后续参数
$# ---- 表示参数的个数 $? ---- 上一个代码或者shell程序在shell中退出的情况，如果正常退出则返回0，反之为非0值。 $* ---- 传递给程序的所有参数组成的字符串。 $@ ---- 取到所有的参数值 $$ ---- 本程序的(进程ID号)PID $! ---- 上一个命令的PID 学习链接：shell编程基础：
linux下awk用法：
shell数组：
解压大全: