RE: Odd file rename

[Anonymous Monk]

Names changed to protect the guilty - can I do this while the file is open, or do I need to close it first? Please excuse my hideous indentation, it's a work in progress.

#!/usr/bin/perl

@incoming = ( `ls /home/user/perl/testincoming` );

foreach $directory (@incoming) {
     chomp($directory);
     @files = ( `ls /home/user/perl/testincoming/$directory` );
     foreach $file (@files) {
       $pattern = "PGP";
        open(FILE,"/home/user/perl/testincoming/$directory/$file") or 
+die "Could
n't open $file";
         while (<FILE>) {
           if (/\Q$pattern\E/) {
              my $newname=$file;
              $newname=~s/^./o/;
              rename ($file, $newname);
        }
        close FILE;
    }
}
}

[Corion]

Doing stuff like moving open files is mostly asking for trouble. Under UNIX systems, this shouldn't be a problem (but who can tell for all UNIX systems ?), under NT this will work and under Windows 9x you will get a sharing violation.

The best thing is to do the rename afterwards, and it's not really hard to do this either.

[t0mas]

Untested code coming...

#!/usr/bin/perl

my $pattern = "PGP";

&renameFiles('/home/user/perl/testincoming');

sub renameFiles {
    # Pass directory name as parameter
    my $Dir = shift;

    opendir(DIR, $Dir) || die "Can't opendir $Dir: $!";
    my @Files = grep { -f "$Dir/$_" } readdir(DIR);
    rewinddir(DIR);
    my @Dirs = grep { /^[^.].*/ && -d "$Dir/$_" && ! -l "$Dir/$_"} rea
+ddir(DIR);
    closedir DIR;

    foreach $file (@Files) {
        open(FILE,"<$Dir/$file") || die "Can't open $file: $!";
        my $doRename=0;
        READFILE: while (<FILE>) {
            if (/\Q$pattern\E/) {
                $doRename=1;
                last READFILE;
            }
        }    
        close(FILE);
                if ($doRename) {
            my $newname=$file;
                    $newname=~s/^./o/;
                    rename ("$Dir/$file", "$Dir/$newname");
        }
    }

    # Call self for each subdir    
    foreach $SubDir (@Dirs) { &renameFiles(join("/",$Dir,$SubDir)); }
};

Should rename all files containing a PGP line in the whole subdirectory tree. This is just a quick modify of something I already had, so it may contain bugs, etc...
I'm not responsible for what it does to your system, no warraty, etc, etc. You know the standard phrases.

UPDATE:As merlyn humbly suggests in his post, I now check for symlinks with && ! -l "$Dir/$_". The code is still untested from my part.

/brother t0mas