利用shell脚本监控目录内文件改动

#! /bin/bash
webroot="/home/www/"
cp /dev/null rsync_file
if [ ! -f   file.md5 ];then
        find $webroot  -type f -exec md5sum {} \; >>file.md5
else
        for file in $(md5sum -c file.md5|awk  -F':' '/FAILED/{print $1}')
                do
                        if [ -f $file ];then
                        filename_z=$(echo $file|sed 's#/#\\/#g')
                        sed -i "/  $filename_z/"d   file.md5
                        md5sum $file >> file.md5
                        echo $file >> rsync_file
                        else
                        echo $file >>rsync_rm
                        fi
                done
        for newfile in $(find $webroot  -type f)
                do
                        grep $newfile file.md5 >/dev/null 2>&1
                        if  [ $? -gt 0 ];then
                        md5sum $newfile >> file.md5
                        echo "$newfile" >> rsync_file
                        fi
                done
for rfile in $(cat rsync_file)
do
rsync -avzp $rfile  /home/www3/
done

脚本介绍：

1，监控 /home/www/ 目录改动，并将改动的文件rsync到/home/www3目录

2，监控方法为监控文件的md5值，如果md5值与上次不同，即发生改变

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