Arch Linux

pepper

Member

Registered: 2017-12-09

Posts: 135

Migration of thousands torrents from a transmission version to another

Hello, I've a machine with an old version of transmission (2.92), and I've thousands torrents in different locations/paths. I need to backup all .torrent files and real file positions before I perform a new Archlinux installation, in order to not manually add each torrent in transmission. What is the best way to perform the backup?

I can backup torrent files from /.config/transmission/torrents and then I just need a list like this:
/path/of/source_file1.iso  source_file1.torrent
/another_path/of/source_file2.iso  source_file2.torrent
/path/of/source_file3.iso  source_file3.torrent

Last edited by pepper (2021-08-31 07:28:53)

solskog

Member

Registered: 2020-09-05

Posts: 462

Re: Migration of thousands torrents from a transmission version to another

If you don't mind using Perl... Depends on how many [topdir] do you have, this bash/perl function will traverse all sub-directries and print filepath and filename pairs.

backup.torrent ()
{
    local dir=${1:?[directory]};
    [[ -d $dir ]] || return 1;
    /usr/sbin/perl - "${dir}" <<'BACKUPTORRENT'
    use v5.34.0;
    use warnings;
    use File::Find;
    my @Files;
    my ($dir) = @ARGV;
    my ($source) = ("");
    sub insert
    {
        return if(! -e || -z || -d || -l || ! -R);
        @_ = split(/\./,$_);
        $_[-1] = 'torrent';
        $source = "$File::Find::name";
        $source =~ s;\';'\\'';g;
        $source =~ s;\";'\\'";g;
        $source = "'" . $source . " \"" . join(".",@_) . "\"'\n";
        push @Files,"$source ";
    }
    find(\&insert,$dir);
    print "@Files";
BACKUPTORRENT
}
# backup.torrent /topdir1/
# backup.torrent /topdir2/
# ... 

Last edited by solskog (2021-09-01 10:20:10)