Bash Scripting Help

Aioth · 09-20-2004, 11:16 AM

Gday everyone,

I'm trying to write a script which finds how many tracks are on a CD and then asks for that many Track Titles.

After that, it goes and ripps/encodes, but I've got that worked out already.

I'm kind of lost here, I know that I'll need to loop to ask for tracks, but I'm not sure how to go about it, or to work out the number of tracks (cdparanoia?)

Thanks in advance, be gentle

- Aioth

ilikejam · 09-20-2004, 12:04 PM

Hi.

Code:

TRACKS=`cdrecord -toc dev=????? 2> /dev/null | grep track | wc | awk '{print $1}'`
((TRACKS--))

Should give you the number of tracks on the CD (assuming it's BASH you're using).

Dave

Aioth · 09-21-2004, 02:16 AM

Thanks!

I think I've got everything sorted now, I'm testing it as I type.

Aioth · 09-21-2004, 02:51 AM

Hmm, I've got just one more issue.

I was encoding to ogg a bit messily and just accepted the error messages.

Like this:

oggenc -q 8 -m 192 -a "$Art" -l "$Alb" -G "$Gen" -d "$Dat" -t "$T1" -N 1 track01.cdda.wav -t "$T2" -N 2 track02.cdda.wav -t "$T3" -N 3 track03.cdda.wav -t "$T4" .... -N 28 track28.cdda.wav -t "$T29" -N 29 track29.cdda.wav -t "$T30" -N 30 track30.cdda.wav -n "%a - %t.ogg"

Now, I'm wondering how to modify this to get it to work. I'm not sure how to work it with the 01 in the wav instead of a 1.

ilikejam · 09-21-2004, 08:51 AM

What exactly is the problem?

Aioth · 09-21-2004, 09:34 AM

Well, what I have now spluts out a lot of "Cannot Find track##.cdda.wav" when I rip a CD with less than 30 songs. Now, how do I just go up to the number of tracks on the CD?

I was thinking of looping like

while [ "$var" -le "$TRACKS" ]

do

oggenc -q 8 -m 192 -a "$Art" -l "$Alb" -G "$Gen" -d "$Dat" -t "$T${var}" -N $var track${var}.cdda.wav -n "%a - %t.ogg

let "var += 1"

done

But I'm not sure how to make sure track${var}.cdda.wav ends up as a 2 digit number.

dsegel · 09-21-2004, 09:38 AM

Do you need to do this from a command line? Grip will rip and encode your CDs for you, and I believe it can also look them up on freedb to get track titles.

ilikejam · 09-21-2004, 09:49 AM

Here's what I'd do:

while [ "$var" -le "$TRACKS" ]

do

if [ $var -lt 10 ]
then
tempvar=0$var
else
tempvar=$var
fi

oggenc -q 8 -m 192 -a "$Art" -l "$Alb" -G "$Gen" -d "$Dat" -t "$T${tempvar}" -N $var track${tempvar}.cdda.wav -n "%a - %t.ogg

let "var += 1"

done

Or words to that effect.

Dave

Aioth · 09-21-2004, 11:21 AM

Thanks ilikejam!

I think I've got it all fixxed up now.

dsegel, I tried using Grip, but it wasn't really what I wanted. And hey, I'm teaching myself a little bash while I'm at it (I'm only 15).