Convert a zip to a bzip2 compressed tar (.tbz)

ziptotar.sh

#!/bin/bash
# Usage: ziptotar.sh <ZIP name>
if [ -z $1 ] || [ "$1" == "-h" ] || [ "$1" == "--help" ];then
  echo "Convert a zip to a bzip2 compressed tar (.tbz)"
  echo "ziptotar.sh <ZIP name>"
  exit
fi
for file in "$@"
do
  if [ ! -f "$file" ];then
    echo "No file! $file"
    continue
  fi
  tmpdir=`mktemp -d`
  #Copy the zip to the temporary directory
  cp "$file" $tmpdir/
  #Unzip
  (cd $tmpdir && unzip -q "$file")
  #Remove the original zipfile because we don't want that to be tar'd
  rm "$tmpdir/$file"
  #Tar the files
  outfilename=$(echo "$file" | rev | cut -d. -f2- | rev).tbz
  (cd $tmpdir && tar cjf "$outfilename" *)
  mv "$tmpdir/$outfilename" .
  #Remove the temporary directory
  rm -rf $tmpdir
  #Print what we did
  echo "Converted $file to $outfilename"
done