Generation file copying for tech support backup Post: 302180089

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Top Forums UNIX for Dummies Questions & Answers Generation file copying for tech support backup Post 302180089 by era on Saturday 29th of March 2008 04:39:23 PM

03-29-2008

Registered User

Off the top of my head ...

Do you always have a single dot, and the number should go before that?

Code:

#!/usr/bin/perl

use strict;
use warnings;

my ($file, $max) = @ARGV;
my ($base, $ext) = split (/\./, $file);

for my $f (reverse <$base.*.$ext>) {
  next unless ($f =~ /\.([0-9]{4})\./);
  my $i = $1;  # grab number we just matched into $i
  if ($i >= $max) {
    unlink $f or warn "$0: Could not remove $f: $!\n";
    next;
  }
  # else
  my $n = sprintf "%s.%04i.%s", $base, $i+1, $ext;
  rename $f, $n or warn "$0: Could not rename $f to $n: $!\n";
}

rename $file, "$base.0001.$ext"
  or warn "$0: Could not rename $file to $base.0001.$ext: $!\n";

This is as untested as it gets. I tried a shell script first but it got really ugly. Still, hope this helps (even perhaps a little bit).

era

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LEARN ABOUT DEBIAN

backup-whatsthis

BACKUP-WHATSTHIS(1)						   Chiark-backup					       BACKUP-WHATSTHIS(1)

NAME

       backup-whatsthis - read an id off a tape and display it

SYNOPSIS

       backup-whatsthis [--list [n]]

DESCRIPTION

       `backup-whatsthis'  is a simple script to display the TAPEID of the current tape and optionally list its contents.  This script is a bit of
       a hack and may not be fully reliable.

OPTIONS

       --list [n] Print TAPEID then list archive n (default 0). Note that archives are numbered from zero.

FILES

       /etc/chiark-backup/settings.pl
	      Configuration file for the whole of chiark-backup

BUGS

       `backup-whatsthis' is currently hardwired to assume `cpio' type backups when listing; it could be trivially hardwired to assume `zafio'	or
       with slightly more effort it could be done properly :->.

AUTHOR

       This Manual page was written by Matthew Vernon <matthew@debian.org> but may be used by anyone.

COPYRIGHT

       Copyright (C) 1997-1998,2000-2001 Ian Jackson <ian@chiark.greenend.org.uk>
       Copyright (C) 1999 Peter Maydell <pmaydell@chiark.greenend.org.uk>
       This is free software; see the source for copying conditions.  There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU-
       LAR PURPOSE.

Debian								     July 2003						       BACKUP-WHATSTHIS(1)