一个简单的改名备份脚本

Wayne posted @ Wed, 23 Feb 2011 20:27:12 +0000 in Experience , 2833 readers

虽然说打算在服务器上用版本控制来管理部署的程序了，但一时终归还没用起来。而按照惯例，上传新版时旧版是不删的，仅仅改个名字存放起来而已。改名字时也没啥严格规定，一直以来有点乱。当然也许别人重命名还是比较规矩的，但反正我是很随心所欲的，搞得经常自己也记不清楚，只能靠修改时间来辨认。上次写了个脚本，把给名字自动加上时间后缀作为备份命令，倒也还管用。这次想再改进一下，上点参数，能整成 "*.latest", "*.current",  "*.last" 之类的效果。

?
bak
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#!/bin/bash
 
case "$1" in
    "") echo "Usage: bak [option] filename"
        echo "bak: rename a file as a backup"
        echo "Try \"bak -h\" for help"
        exit
            ;;
    *)
       rename=0
       option=0
       while getopts "hrlc" flag
       do
        option=1
        case "$flag" in
            "h") helplist=1;;
            "r") let "rename += 1";;
            "l") last=1;;
            "c") current=1;;
        esac
                 
       done
       if [ "$option" -ne 1 ]
        then
          filename=$1
          newfilename=$filename.`date +%Y%m%d%H%M`
          mv -f $filename $newfilename
          echo $newfilename
          exit
       fi
        ;;
esac
 
if [ "$helplist" = 1 ]; then
    echo "bak: rename a file as a backup"
    echo "Usage: bak [option] filename"
    echo "default(no option): rename filename to filename.`date +%Y%m%d%H%M`"
    echo "Options:"
    echo "  -l: rename filename to filename.last"
    echo "  -c: rename filename to filename.current"
    echo "  -r: cut the end of filename from the last dot, example:"
    echo "          filename.last  --> filename"
    echo "multiple r will try to cut multiple part split by dot from the end, as:"
    echo "      -rrr    filename.section1.secion2.section3 --> filename"
    exit
fi
     
case "$2" in
    "") echo "Usage: bak [option] filename"
        echo "bak: rename a file as a backup"
        echo "Try \"bak -h\" for help"
        ;;
    *)
       filename=$2 
       newfilename=$filename
       if [ "$rename" -ne 0 ]; then
        for i in `seq 1 $rename`
          do
            newfilename=${newfilename%.*}
          done
       fi
       if [ "$last" = 1 ]; then
        newfilename=$newfilename.last
       elif [ "$current" = 1 ];then
        newfilename=$newfilename.current
       else
        newfilename=$newfilename.`date +%Y%m%d%H%M`
       fi
       mv $filename $newfilename
       echo $newfilename
       ;;
esac

 

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