Mini Shell

#!/usr/bin/sh
#
# Script to read more than 1 song with icedax
# Each file gets an individual name from the command line
#
# based on a perl script from Matthias Schniedermeyer
#
# usage: readmult <track a> <title a> <track b> <title b> ...
#
# example: readmult 1 intro 3 lovesong 5 medley
# will produce a file named intro.wav for track 1,
#              a file named lovesong.wav for track 3, and
#              a file named medley.wav for track 5.
#
CDDA2WAV=icedax
CDDA2WAVOPTS="-P0"

if [ $(( $# % 2 )) -eq 0 ]; then
  while [ $# -ge 2 ]; do
    $CDDA2WAV $CDDA2WAVOPTS -Owav -t $1 $PREFIX$2".wav"
    RES=$?
    if [ $RES -ne 0 ]; then
      echo "$CDDA2WAV error, return value "$RES". Aborted." >&2
      break
    fi
    shift 2
  done
else
  echo "usage: $0 [<Tracknr> <Filename>] ..." >&2
fi