Add this to your `.zshrc` file to give you access to `ltrim` and `rtrim`.

trim.zhs

# usage: cat [file] | rtrim | ltrim | sort | uniq

# Right trim: Removes trailing whitespace
rtrim() {
  while IFS= read -r line; do
    echo "${line%"${line##*[![:space:]]}"}"
  done
}

# Left trim: Removes leading whitespace
ltrim() {
  while IFS= read -r line; do
    echo "${line#"${line%%[![:space:]]*}"}"
  done
}