On Sun, Dec 26, 2010 at 05:09:30PM +0000, Frank Shute wrote:
>
> I generally play my tracks of an album like so:
>
> for track in $(cat trombone_shorty-backatown.m3u); do
> mplayer $track
> done
>
> They then play in the correct order.
>
> How would I go about randomising the order of play using
> sh (preferably) or perl?
>
> Sorry for the OT posting but I thought a brainteaser might clear the
> fog caused by excessive Xmas indulgence ;)
>
>
> Regards,
>
> --
>
> Frank
>
> Contact info: http://www.shute.org.uk/misc/contact.html
>
>
A little while back I wrote a perl script to randomly pick mp3,
ogg, flac files from any directory specified as arg 1 and play them
using mplayer.
I categorize my genres by directory and with this perl script I can
randomly play songs from any directory.
If the script is invoked without any arguments, then it will play songs
from the default hard-coded directory defined by $SONG_DIR.
Don't know if this would be useful to you (or someone else).
#!/usr/bin/perl -w
use strict;
my $SONG_DIR = "/home/joji/songs/good";
if ($#ARGV == 0)
{
$SONG_DIR = $ARGV[0];
}
my %played = ();
my $rand;
my $dh;
my @song_list;
opendir($dh, $SONG_DIR);
@song_list = readdir($dh);
closedir($dh);
my $count = $#song_list;
# Perl counts from zero. If there is one item, Perl will say 0.
# So to get the real count, we have to increment by 1.
$count++;
chdir($SONG_DIR);
while ((keys %played) < $count)
{
while (1)
{
$rand = int(rand($count));
if (! $played{$rand})
{
$played{$rand} = 1;
last;
}
if ((keys %played) >= $count)
{
last;
}
}
if ($song_list[$rand] eq "." || $song_list[$rand] eq "..")
{
;
}
else
{
print "Playing song # " . $rand . " [" . $song_list[$rand] . "]\n";
`mplayer \"$song_list[$rand]\"`;
}
}
exit(0);
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