Series Episodes renamer script

series_renamer.sh

#!/bin/sh

episodes="*"
regex="Seinfeld Season ([[:digit:]]{1,2}) Episode ([[:digit:]]{1,2}) - ([a-zA-Z0-9_\& \-]*)(.mkv|.srt)"
for f in $episodes
do
    if [[ $f =~ $regex ]]; then
      season="${BASH_REMATCH[1]}"
      episode="${BASH_REMATCH[2]}"
      name="${BASH_REMATCH[3]}"
      extension="${BASH_REMATCH[4]}"
      old_name="${BASH_REMATCH[0]}"
      new_name="Seinfeld S${season}E${episode} - ${name}${extension}"
      mv "${old_name}" "${new_name}"
      echo "--> ${new_name}"
    fi
done