Information wants to be free...

File Renaming Using an Editor

Here is a script that builds on the principle of using a text editor to rename files. This is sometimes useful, since editors have more advanced features available, like block mode editing, compared to a shell.

The script generates another script that performs the renaming, but before the script is called, it's loaded into the editor. It operates on the current directory or another one if it's specified as an argument.

#!/bin/bash

SCRIPT="_rename.bash"

if [ ! -z "$1" ]; then
  cd "$1"
fi

if [ -e "./$SCRIPT" ]; then
  echo "$SCRIPT already exists, delete it if necessary."
  exit 1;
fi

LONGEST=0
for FILE in *; do
  if [ ! -e "$FILE" ]; then
    echo "Error: Directory empty!"
    exit 1;
  fi

  FILE="${FILE//\\/\\\\}"
  FILE="${FILE//\'/\'}"

  if [ ${#FILE} -gt $LONGEST ]; then
    LONGEST=${#FILE}
  fi
done

echo "#!/bin/bash" > "./$SCRIPT"
for FILE in *; do
  if [ "$FILE" = "$SCRIPT" ]; then
    continue
  fi

  FILE="${FILE//\\/\\\\}"
  FILE="${FILE//\'/\'}"

  echo -n "mv -v $'$FILE' " >> "./$SCRIPT"
  PAD=$(( $LONGEST - ${#FILE} ))
  while [ $PAD -gt 0 ]; do
    echo -n " " >> "./$SCRIPT"
    PAD=$(( $PAD - 1 ))
  done

  echo "$'$FILE'" >> "./$SCRIPT"
done

chmod +x "./$SCRIPT"

if [ "${EDITOR##*/}" = "vim" ]; then
  $EDITOR -c "set nowrap" "./$SCRIPT"
else
  $EDITOR "./$SCRIPT"
fi

bash "./$SCRIPT"
rm -f "./$SCRIPT"
          


Topic: Scripts and Code, by Kjetil @ 02/09-2013, Article Link