Greetings,
In an effort to figure out how to perform the equivalent of this shell script:
find ./iso/ -type f -cmin '+11' -uid web -exec rm '{}' \;
using Perl. I made use of one of the Perl
utilities,
find2perl. After reading it's syntax, I used what I understood to be the equivalent:
find2perl ./iso/ -iname '*.xz' -user web -ctime 1 -exec rm '{}' \;
-- with 2 exceptions;
1) I added
-iname '*.xz'
2) I was unable to define time in minutes, as only
-ctime is available, which == day(s).
I had expected a similarly short equivalent to be returned upon execution. But much to my surprise, I received the following:
#! /usr/local/bin/perl -w
eval 'exec /usr/local/bin/perl -S $0 ${1+"$@"}'
if 0; #$running_under_some_shell
use strict;
use File::Find ();
# Set the variable $File::Find::dont_use_nlink if you're using AFS,
# since AFS cheats.
# for the convenience of &wanted calls, including -eval statements:
use vars qw/*name *dir *prune/;
*name = *File::Find::name;
*dir = *File::Find::dir;
*prune = *File::Find::prune;
sub wanted;
my (%uid, %user);
while (my ($name, $pw, $uid) = getpwent) {
$uid{$name} = $uid{$uid} = $uid;
}
# Traverse desired filesystems
File::Find::find({wanted => \&wanted}, './iso/');
exit;
sub wanted {
my ($dev,$ino,$mode,$nlink,$uid,$gid);
(($dev,$ino,$mode,$nlink,$uid,$gid) = lstat($_)) &&
/^.*\.xz\z/si &&
($uid == $uid{'web'}) &&
(int(-C _) == 1) &&
(unlink($_) || warn "$name: $!\n");
}
Is this right?!
I'm not going to pretend to be a Perl GURU -- far from it. But even after removing the comments, this seems to inefficient -- no?
Anyway, if this is really the best option to perform such a short task in a shell with Perl. It looks to me that "shelling out" within Perl is more efficient -- minus
Taint, of course.
Thank you for any consideration in this matter.
--chris
#!/usr/bin/perl -Tw
use perl::always;
my $perl_version = "5.12.4";
print $perl_version;
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