Convert cbr to cbz

cbr2cbz.sh

#!/bin/bash

exit_with_error() {
  if [ -n "$1" ]; then
    echo "ERROR: $1"
  else
    echo "ERROR: could not convert file"
  fi
  exit 1
}

for FILE in *{.cbr,.CBR}
do
  [ -e "$FILE" ] || continue
  echo "Converting '$FILE' to cbz format."
  DIR="${FILE%.*}"
  mkdir "$DIR"
  [ $? -eq 0 ] || exit_with_error "Could not create directory: $DIR"
  unrar x -inul ./"$FILE" "$DIR"
  [ $? -eq 0 ] || exit_with_error "Could not unrar file: $FILE"
  cd "$DIR"
  [ $? -eq 0 ] || exit_with_error "Could not change directory: $DIR"
  zip -0 -q -r "../$DIR.cbz" .
  [ $? -eq 0 ] || exit_with_error "Could not zip file: $DIR.cbz"
  cd ..
  [ $? -eq 0 ] || exit_with_error "Could not change directory: $DIR/.."
  rm -r "$DIR"
  [ $? -eq 0 ] || exit_with_error "Could not delete directory: $DIR"
  #Uncomment the following lines if you do not want to keep original cbr files
  #rm "$FILE"
  #[ $? -eq 0 ] || exit_with_error "Could not delete file: $FILE"
  echo "Conversion of '$FILE' was successful!"
done