shell 实用脚本

 1 #!/bin/sh
 2 #create by lizr 2016-01-15
 3 #脚本功能 
 4 #覆盖文件前先备份
 5 cfsuffix=$(date +%Y-%m-%d);    #备份文件后缀
 6 if [ $# -lt 2 ]; then                        #输入参数说明
 7   echo "error...need args"
 8   echo "eg:path1 path2"
 9   echo "path1 files backup and copy to path2"
10   exit 1
11 else
12     path1=$1;
13     path2=$2;
14   if [ [ -d "$path1" ] && [ -d "$path2" ] ]; then
15         ls $path1 | awk -F‘[ ]‘ ‘{print $1}‘ | while read filename
16         do
17             if [ -f $filename ]; then
18                 sfile = $path1‘/‘$filename;    #源文件
19                 pfile = $path2‘/‘$filename; #需备份文件 
20                 cfile = $path2‘/‘$filename‘.‘$cfsuffix;    #备份后文件
21                 if [ -f $pfile ]; then
22                     cp pfile cfile &&  a=1 || a=0;
23                     if [ $a -eq 1 ]; then
24                         echo $filename "backup success!";
25                         cp $sfile $path2;
26                     else 
27                         echo $filename "backup error!"
28                     fi
29                 else
30                     echo $pfile "not find";
31                     cp $sfile $path2;
32                 fi
33             fi
34         done
35   else
36     echo "error...args path not find!";
37   fi
38 fi