letters.sh

check_letter() {
  echo "$1: `type $1 >/dev/null && type $1 | sed -e \"s/^$1: //\" | tr '\n' ' '`";
}

letters() {
  for letter in {a..z}; do
    check_letter $letter
    check_letter `echo $letter | tr a-z A-Z`
  done
}