Shell脚本文件操作

Linux Shell 

http://baike.baidu.com/link?url=2LxUhKzlh5xBUgQrS0JEc61xi761nvCS7SHJsa1U1SkVbw3CC869AoUCyKT0zxIM

# Sample.sh
# 判断参数个数和第2/3个参数，括号要留空格
 1  if ( [ $# != 5 ] && [ $# != 6 ] ) || ( [ $2 != "-Path" ] && [ $3 != "-Path" ] )
    then
        echo "example: ***"
        exit 1
fi

if [ $1 == "set" ] && [ $2 == "-pm" ]
   then
# bash/pdksh不能在等号两侧留下空格
     PATH=$4
   else
     PATH=$3
fi

# 删除已经存在文件
14 if [ -e $PATH/out.txt ]
   then
      rm $PATH/out.txt
fi

# 调用程序
19 if [ $1 == "set" ] && [ $2 == "-pm" ] 
   then
     $4/sample.sh $1 $2 -Path $4/config $5 $6
   else
     $3/sample.sh $1 -Path $3/config $4 $5
fi