asks for a search and a replace string and parses all files in the current directory or $ARGV[0] with matching filename (the commented regex in the source).. WARNING: always make backups of your data before you use this script. if you enter the wrong values it will trash your data without warning! - useful i.e. for renaming variables in different source files.. - current regex pattern matches .pl and .pm files..
#!/usr/bin/perl

$dir = $ARGV[0] || '.';

$!=1;

chdir($dir) or die $!;

opendir(DIR,$dir) or die $!;

my $changes=0;

print "\n :: find    :. ";
$find=<STDIN>; chop($find);
print " :: replace :. ";
$replace=<STDIN>; chop($replace);

$/=undef;

foreach my $file (readdir(DIR))
{
    if($file=~/^.+\.pm$|^.+\.pl$/) # adjust pattern to your needs
    {
        print "parsing file $file..\n";
        open(FILE,"<$file") or die $!;
        my $file_data=<FILE>;
        close(FILE);
        $changes += $file_data =~ s/$find/$replace/gme;
        open(FILE,">$file") or die $!;
        print FILE $file_data;
        close(FILE);
    }
}

print "done. ($changes changes)\n";

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In reply to replace by photon

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