Centos下计算文件的MD5值
时间:2014-02-21 13:30 来源:www.it.net.cn 作者:IT网
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脚本名 -p [ > 输出的文件名] ← 该功能是计算PATH变量里面所有文件的MD5值
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脚本名 -p -f MD5文件 [ > 输出的文件名] ← 该功能是计算PATH变量里面所有文件的MD5值并跟上一次生成的MD5文件相对比
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脚本名 文件1 文件2 文件3 ... [ > 输出的文件名] ← 该功能是计算指定文件的MD5值
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脚本名 目录1 目录2 目录3 ... [ > 输出的文件名] ← 该功能是计算指定目录下所有文件的MD5值
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脚本名 -c MD5文件1 MD5文件2 [ > 输出的文件名] ← 该功能是比较同一个目录下所有文件生成的2次MD5文件中有哪些MD5值不一致
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脚本名 目录 -f MD5文件 [ > 输出的文件名] ← 该功能是跟上面的功能类似,只是这个不生成文件直接比对
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#!/usr/bin/perl
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use Digest::MD5;
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use File::Find;
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# 2012-12-16 15:24 Leo chanyipiaomiao@163.com
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# Blog:http://linux5588.blog.51cto.com
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#用法提示
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$usage = "Usage: scriptname -p | Directory1 ... | File1 ... | -c MD5File1 MD5File2 | Directory -f MD5File [ > OUTFILE]";
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$usagecompare = "Usage: scriptname -c MD5File1 MD5File2 [ > OUTFILE]";
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$usagepath = "Usage: scriptname -p | -p -f MD5File [ > OUTFILE]";
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#判断命令行参数是否为空,为空 则直接计算PATH路径里面所有的二进制文件的MD5值,不为空
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#如果第一个参数是目录,那么调用getDirectoryAllFileMD5 计算目录里面所有文件的MD5值
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#如果第一个参数是文件,那么调用getSingleFileMD5 计算命令行参数里面所有文件的MD5值
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if (@ARGV) {
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my $arg = $ARGV[0];
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if (-d $arg ) {
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if ($ARGV[1] eq '-f' && -T $ARGV[2]){
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&compareWithLastMD5File($arg);
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} else {
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&getDirectoryAllFileMD5(@ARGV);
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}
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} elsif ( -f $arg ) {
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&getSingleFileMD5(@ARGV);
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} elsif ($arg eq '-c' && @ARGV == 3 ) {
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die"$usagecompare\n" unless (-T $ARGV[1] && -T $ARGV[2]);
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&compareWithTwoMD5Files;
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} elsif ($arg eq '-p') {
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if (1 == @ARGV) {
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&getPathBinFileMD5;
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} elsif($ARGV[1] eq '-f' && -T $ARGV[2]) {
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&compareWithLastPathMD5File;
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} else {
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die"$usagepath\n";
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}
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} else {
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die"$usage\n";
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}
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} else {
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die"$usage\n";
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}
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#得到目录下所有文件(包括子目录)的MD5值
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sub getDirectoryAllFileMD5 {
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find(\&wantedPrint,@_);
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}
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#得到PATH变量里面所有的二进制文件的MD5值
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sub getPathBinFileMD5 {
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my @path = split /:/,$ENV{PATH};
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find(\&wantedPrint,@path);
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}
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#先得到本次PATH变量所有的目录下的文件的MD5值,然后对比以前是生成的MD5文件
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sub compareWithLastPathMD5File {
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my @path = split /:/,$ENV{PATH};
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&compareWithLastMD5File(@path);
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}
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#得到单个文件的MD5值
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sub getSingleFileMD5 {
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foreach (@_) {
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if (-R $_) {
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print "$_ ",&getMD5($_),"\n";
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} else {
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print "Can't read $_\n";
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next;
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}
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}
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}
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#先生成该目录下所有文件的MD5值,然后跟上一次该目录的生成的MD5文件对比
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#本次生成的MD5跟上一次生成的MD5文件比对,不一致的输出出来,同时将3个时间输出出来
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#如果是新添加的文件则输出出来其3个时间值,atime mtime ctime
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sub compareWithLastMD5File {
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find(\&wantedHash,@_); #这里调用那个回调函数后就会生成一个%thisMD5Hash的哈希
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my $md5file = $ARGV[2];
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open LASTMD5FILE,"<","$md5file"ordie"Can't read $md5file : $!\n";
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my $lastMD5Filerecords = (@lastMD5FilerecordsArray = <LASTMD5FILE>);
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%lastMD5Hash = map { split } @lastMD5FilerecordsArray;
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close LASTMD5FILE;
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foreach (keys %thisMD5Hash) {
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$thisMD5Filerecords++;
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}
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&compare($thisMD5Filerecords,$lastMD5Filerecords);
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}
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#比较2个生成的MD5文件(对同一个目录生成的),找出不同的或者不存在的
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sub compareWithTwoMD5Files {
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my ($md5file1,$md5file2) = ($ARGV[1],$ARGV[2]);
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open MD5FILE1,"<","$md5file1"ordie"Can't read $md5file1 : $!\n";
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open MD5FILE2,"<","$md5file2"ordie"Can't read $md5file2 : $!\n";
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my $file1record = (@file1record = <MD5FILE1>);
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my $file2record = (@file2record = <MD5FILE2>);
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close MD5FILE1;
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close MD5FILE2;
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%thisMD5Hash = map { split } @file1record;
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%lastMD5Hash = map { split } @file2record;
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&compare($file1record,$file2record);
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}
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#对2个MD5文件进行比较或者是边生成边比对
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sub compare {
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my($file1record,$file2record) = ($_[0],$_[1]);
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if ($file1record >= $file2record) {
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%hash1 = %thisMD5Hash;
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%hash2 = %lastMD5Hash;
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} else {
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%hash1 = %lastMD5Hash;
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%hash2 = %thisMD5Hash;
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}
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my $count = 0;
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foreach (keys %hash1) {
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if (exists $hash2{$_}) {
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if ( $hash1{$_} ne $hash2{$_} ) {
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$count++;
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($atime,$mtime,$ctime) = &getFileAMCTime($_);
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print "Different --> $_\n";
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print "$hash2{$_}\n";
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print "$hash1{$_} Atime:$atime Mtime:$mtime Ctime:$ctime\n\n";
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}
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} else {
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$count++;
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if (-e $_) {
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($atime,$mtime,$ctime) = &getFileAMCTime($_);
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print "Added --> $_ \n$hash1{$_} Atime:$atime Mtime:$mtime Ctime:$ctime\n\n";
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} else {
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print "Deleted --> $_ $hash1{$_}\n\n";
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}
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}
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}
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if ($count == 0) {
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print "Not Found Different !!\n";
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}
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}
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#遍历条件,找到之后输出
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sub wantedPrint {
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if (-f $_ && -R $_) {
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print "$File::Find::name ",&getMD5($_),"\n";
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}
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}
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#遍历条件,找到之后形成一个HASH
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sub wantedHash {
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if (-f $_ && -r $_) {
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$thisMD5Hash{$File::Find::name} = &getMD5($_);
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}
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}
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#计算MD5值
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sub getMD5 {
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my $file = shift @_;
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open(FH, $file) ordie"Can't open '$file': $!\n";
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binmode(FH);
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my $filemd5 = Digest::MD5->new->addfile(FH)->hexdigest;
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close FH;
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return$filemd5;
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}
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#获取文件的atime,mtime,ctime
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sub getFileAMCTime {
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$filename = shift @_;
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my ($atime,$mtime ,$ctime) = (stat ($filename))[8,9,10];
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$atime = &getTime($atime);
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$mtime = &getTime($mtime);
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$ctime = &getTime($ctime);
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#将日期时间格式转换为比较友好的格式
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sub getTime {
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my $time = shift @_;
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my($sec,$min,$hour,$day,$mon,$year) = (localtime $time)[0..5];
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$time = sprintf "%4d-%02d-%02d %2d:%02d:%02d",$year + 1900,$mon + 1,$day,$hour,$min,$sec;
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return$time;
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}
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return$atime,$mtime,$ctime;
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}
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#!/usr/bin/perl
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use Digest::MD5;
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use File::Find;
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# 2012-11-24 22:41 Leo chanyipiaomiao@163.com
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# Blog:http://linux5588.blog.51cto.com
-
-
#用法提示
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$usage = "Usage: scriptname -p | Directory1 ... | File1 ... | -c MD5File1 MD5File2 | Directory -f MD5File [ > OUTFILE]";
-
$usagecompare = "Usage: scriptname -c MD5File1 MD5File2 [ > OUTFILE]";
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$usagepath = "Usage: scriptname -p [ > OUTFILE]";
-
-
#判断命令行参数是否为空,为空 则直接计算PATH路径里面所有的二进制文件的MD5值,不为空
-
#如果第一个参数是目录,那么调用getDirectoryAllFileMD5 计算目录里面所有文件的MD5值
-
#如果第一个参数是文件,那么调用getSingleFileMD5 计算命令行参数里面所有文件的MD5值
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if (@ARGV) {
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my $arg = $ARGV[0];
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if (-d $arg ) {
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if ($ARGV[1] eq '-f' && -T $ARGV[2]){
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&compareWithLastMD5File($arg);
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} else {
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&getDirectoryAllFileMD5(@ARGV);
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}
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} elsif ( -f $arg ) {
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&getSingleFileMD5(@ARGV);
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} elsif ($arg eq '-c' && @ARGV == 3 ) {
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die "$usagecompare\n" unless (-T $ARGV[1] && -T $ARGV[2]);
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&compareWithTwoMD5Files;
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} elsif ($arg eq '-p') {
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die "$usagepath\n" unless (@ARGV == 1);
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&getPathBinFileMD5;
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} else {
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die "$usage\n";
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}
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} else {
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die "$usage\n";
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}
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#得到目录下所有文件(包括子目录)的MD5值
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sub getDirectoryAllFileMD5 {
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find(\&wantedPrint,@_);
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}
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#得到PATH变量里面所有的二进制文件的MD5值
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sub getPathBinFileMD5 {
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my @path = split /:/,$ENV{PATH};
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find(\&wantedPrint,@path);
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}
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#得到单个文件的MD5值
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sub getSingleFileMD5 {
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foreach (@_) {
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if (-R $_) {
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print "$_ ",&getMD5($_),"\n";
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} else {
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print "Can't read $_\n";
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next;
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}
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}
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}
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-
#先生成该目录下所有文件的MD5值,然后跟上一次该目录的生成的MD5文件对比
-
#本次生成的MD5跟上一次生成的MD5文件比对,不一致的输出出来,同时将3个时间输出出来
-
#如果是新添加的文件则输出出来其3个时间值,atime mtime ctime
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sub compareWithLastMD5File {
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find(\&wantedHash,@_);
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my $md5file = $ARGV[2];
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open MD5FILE,"<","$md5file"or die "Can't read $md5file : $!\n";
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my $lastMD5Filerecords = (@lastMD5FilerecordsArray = <MD5FILE>);
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my %lastMD5Hash = map { split } @lastMD5FilerecordsArray;
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close MD5FILE;
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foreach (keys %thisMD5Hash) {
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$thisMD5Filerecords++;
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}
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if ($thisMD5Filerecords >= $lastMD5Filerecords) {
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%hash1 = %thisMD5Hash;
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%hash2 = %lastMD5Hash;
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} else {
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%hash1 = %lastMD5Hash;
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%hash2 = %thisMD5Hash;
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}
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foreach (keys %hash1) {
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if (exists $hash2{$_}) {
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if ( $hash1{$_} ne $hash2{$_} ) {
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($atime,$mtime,$ctime) = &getFileAMCTime($_);
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print "Different:$_ $hash1{$_} Atime:$atime Mtime:$mtime Ctime:$ctime\n";
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}
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} else {
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if (-e $_) {
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($atime,$mtime,$ctime) = &getFileAMCTime($_);
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print "Added:$_ $hash1{$_} Atime:$atime Mtime:$mtime Ctime:$ctime\n";
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} else {
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print "Deleted:$_ $hash1{$_}\n";
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}
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}
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}
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}
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#比较2个生成的MD5文件(对同一个目录生成的),找出不同的或者不存在的
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sub compareWithTwoMD5Files {
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my ($md5file1,$md5file2) = ($ARGV[1],$ARGV[2]);
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open MD5FILE1,"<","$md5file1"or die "Can't read $md5file1 : $!\n";
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open MD5FILE2,"<","$md5file2"or die "Can't read $md5file2 : $!\n";
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my $file1record = (@file1record = <MD5FILE1>);
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my $file2record = (@file2record = <MD5FILE2>);
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close MD5FILE1;
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close MD5FILE2;
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my %hashmap1 = map { split } @file1record;
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my %hashmap2 = map { split } @file2record;
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if ($file1record >= $file2record) {
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%hash1 = %hashmap1;
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%hash2 = %hashmap2;
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} else {
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%hash1 = %hashmap2;
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%hash2 = %hashmap1;
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}
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foreach (keys %hash1) {
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if (exists $hash2{$_}) {
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if ( $hash1{$_} ne $hash2{$_} ) {
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($atime,$mtime,$ctime) = &getFileAMCTime($_);
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print "Different:$_ $hash1{$_} Atime:$atime Mtime:$mtime Ctime:$ctime\n";
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}
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} else {
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if (-e $_) {
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($atime,$mtime,$ctime) = &getFileAMCTime($_);
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print "Added:$_ $hash1{$_} Atime:$atime Mtime:$mtime Ctime:$ctime\n";
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} else {
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print "Deleted:$_ $hash1{$_}\n";
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}
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}
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}
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}
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#遍历条件,找到之后输出
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sub wantedPrint {
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if (-f $_ && -R $_) {
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print "$File::Find::name ",&getMD5($_),"\n";
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}
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}
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#遍历条件,找到之后形成一个HASH
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sub wantedHash {
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if (-f $_ && -r $_) {
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$thisMD5Hash{$File::Find::name} = &getMD5($_);
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}
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}
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#计算MD5值
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sub getMD5 {
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my $file = shift @_;
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open(FH, $file) or die "Can't open '$file': $!\n";
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binmode(FH);
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my $filemd5 = Digest::MD5->new->addfile(FH)->hexdigest;
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close FH;
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return $filemd5;
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}
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#获取文件的atime,mtime,ctime
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sub getFileAMCTime {
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$filename = shift @_;
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my ($atime,$mtime ,$ctime) = (stat ($filename))[8,9,10];
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$atime = &getTime($atime);
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$mtime = &getTime($mtime);
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$ctime = &getTime($ctime);
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#将日期时间格式转换为比较友好的格式
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sub getTime {
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my $time = shift @_;
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my($sec,$min,$hour,$day,$mon,$year) = (localtime $time)[0..5];
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$time = sprintf "%4d-%02d-%02d %2d:%02d:%02d",$year + 1900,$mon + 1,$day,$hour,$min,$sec;
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return $time;
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}
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return $atime,$mtime,$ctime;
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}
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