Linux shell : 史上最简单的系统备份脚本

#!/bin/bash

# The is script backup /etc directory！

# Author： zhangjun （E-MAILL: [e-mail])

date=$(date +%y%m%d)
size=$(du -sh /etc)

if [ -d /tmp/dbbak ]
        then
                echo "Date: $date!" > /tmp/dbbak/dbinfo.txt
                echo "Size: $size!" >> /tmp/dbbak/dbinfo.txt
                cd /tmp/dbbak
                tar -zcf etc_$date.tar.gz /etc dbinfo.txt &> /dev/null
                rm -rf /tmp/dbbak/dbinfo.txt

        else
                mkdir /tmp/dbbak
                echo "Date: $date!" > /tmp/dbbak/dbinfo.txt
                echo "Size: $size!" >> /tmp/dbbak/dbinfo.txt
                cd /tmp/dbbak
                tar -zcf etc_$date.tar.gz /etc dbinfo.txt &> /dev/null
                rm -rf /tmp/dbbak/dbinfo.txt
fi