Linux系统递归生成目录中文件的md5的方法_php实例
linux下使用md5sum递归生成整个目录的md5
今天要用md5sum操作目录,递归生成目录下所有文件的md5值,结果发现它不支持递归操作于是写了个php脚本处理下
代码:
<?php $path ='/data/www/bbs/source'; $outfile = 'file.md5'; get_file_md5($path, $outfile); function get_file_md5($path, $outfile) { $path = rtrim($path, '/'); if(function_exists('scandir')) { $files = scandir($path); foreach($files as $v) { if($v != '.' && $v != '..') { $file = $path.'/'.$v; if(is_dir($file)) { get_file_md5($file, $outfile); }else { file_put_contents($outfile, md5_file($file)." ".$file."\n", FILE_APPEND); } } } }else { $files = opendir($path); while(($f = readdir($files)) !== false) { if($f == '.' || $f == '..') continue; $file = $path.'/'.$f; if(is_dir($file)) { get_file_md5($file, $outfile); }else { file_put_contents($outfile, md5_file($file)." ".$file."\n", FILE_APPEND); } } closedir($files); } }
注意:生成的md5值和文件之间是两个空格,否则导致错误如下
在来个更简单的,使用linux的find命令一句搞定
代码:
find /data/www/bbs/source -type f -print0 | xargs -0 md5sum > file2.md5
测试
md5sum -c file1.md5 md5sum -c file2.md5
如图所示
这样把所有检测结果输出到屏幕上来了,如果最后一条显示这样的信息 md5sum: WARNING: 2 of 1147 computed checksums did NOT match 则说明在总共1147条中有2条是不符合的
然后我们可以
md5sum -c file1.md5 | grep FAILED
就很容易知道是哪些文件的篡改过

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