初学时的shell-shell
测试过程：vi test.sh 后把程序写入其中，保存退出。然后改变文件属性：chmod +x test.sh 最后执行：./test.sh for语句测试:1)
#!/bin/bash
for num in 1 2 3
do
echo "hello,num=$num"
done
2)
#!/bin/bash
for ((i=1;i fortest.sh
sed '1,$s/is/--end/' fortest.sh
sed '1,$s/is/--end/g' fortest.sh
sed '/is/=' fortest.sh
引号测试:
#!/bin/bash
var=hello
echo "var is $var"
echo 'var is $var'
echo "var is \$var"
echo `ls`
var2=date
echo `$var2`
case语句测试:
#!/bin/bash
for (( ;; ))
do
echo "please input a key:"
read word
case $word in
1)
echo "your chioce is the one"
;;
2)
echo "your chioce is the two"
;;
3)
echo "your chioce is the three"
;;
q)
echo "your choice is exit"
exit
;;
*)
echo "illegal choice"
exit
esac
done
" $ "符号测试:
#!/bin/bash
echo "please run with more than one parm";
echo "program name \$0:"$0;
echo "first param \$1:"$2;
echo "first param \$$:"$$;
echo "first param \$*:"$*;
数组的使用:
#!/bin/bash
hostip=("100","101","102","103","104","105","106","107","108","109","110")
hostpass=("123456","123456","123456","123456","123456","123456","123456","123456","123456","123456","123456")
i=1
while [ $i -lt 12 ] ; do
ssh root@10.0.2.hostip[$i]
done
重启别人电脑的shell: #这个好像有点问题，需再测试下
#!/usr/bin/expect
spawn ssh root@10.0.2.120
expect "password:"
send "123456\n"
expect "$"
send "reboot\n"
#expect "password:"
#send "123456\n"
expect eof
查找文件，需指定查找目录和文件的修改时间:
#!/bin/bash
path=$1
date=$2
if [ -z $path ]
then
echo "Please input find path:(eg:/dev/abc/)"
read path
fi
if [ -z $date ]
then
echo "Please input find date:(eg:2006-04-23)"
read date
fi
ls -l $path --time-style=long-iso | grep "$date $time"
递归算法：
1）
#!/bin/bash
function myls()
{
local y=`ls`;
echo $y;
for z in $y;do
if [ -d $z ];then
echo "进入子目录";
cd `pwd`/$z;
myls;
echo "返回上一级目录";
cd..;
fi
done
}
echo "please input a directory:"
read x
cd $x
myls;
2）#!/bin/bash
check_dir()
{
if [ -d $y ];then
echo "$y是一个目录";
ls -l $y
else
echo "$y是一个文件";
fi
}
echo "please input a directory:"
read y
x=`ls $y`
echo $x
for y in $x;do
check_dir
done;
备份脚本:
#!/bin/bash
/bin/tar -zcf /var/mail
/bin/cp /var/mail.tar.gz /root
查找目录:
#!/bin/bash
ls -l | grep ^d
#输出当前目录下的所有目录
更新ftp服务器上的文件:
#!/bin/bash
echo "open 10.0.2.224" > /tmp/ftp1.cmd
echo "user ubunadm 123456" >> /tmp/ftp1.cmd
echo "get `date +%Y`/`date +%Y%m`/`date +%d`/file01 /root/copy/file02" >> /tmp/ftp1.cmd
ftp -nv < /tmp/ftp1.cmd
echo "quit" >> /tmp/ftp1.cmd
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