1. 语法结构
2. 案例
2.1 批量解压缩
#!/bin/bashcd /root/test/ ls *.tar.gz > ls.log ls *.tgz >> ls.logfor i in $( cat ls.log )dotar -zxf $i &> /dev/nulldone rm -rf ls.log ~ ~ ~ "for2.sh" 11L, 145C
2.2 批量添加指定数量的用户
#!/bin/bashread -p "input username: " -t 30 name read -p "input total No. of users: " -t 30 num read -p "input password for users: " -t 30 pswif [ ! -z "$name" -a ! -z "$num" -a ! -z "$psw" ]theny=$( echo $num | sed 's/[0-9]//g' )if [ -z "$y" ]thenfor (( i=1;i<=$num;i=i+1 ))do/usr/sbin/useradd $name$i &> /dev/nullecho $pass | /usr/bin/passwd --stdin $name$i &> /dev/nulldonefi fi~ ~ ~ "for4.sh" 19L, 422C
2.3 批量删除所有的普通用户
#!/bin/bashusr=$(cat /etc/passwd | grep /bin/bash | grep -v root | cut -d ":" -f1)for i in $usrdouserdel -r $idone~ ~ ~ "for5.sh" 9L, 127C