Shell Helpers

str.sh

function str_repeat() {
  local -r str="$1"
  local -r n="$2"

  echo "$(printf '%*s' "${n}" | tr ' ' "${str}")"
}

function str_box() {
  local -r str="$1"
  local -r str_len=$(( 4 + ${#str} ))
  local -r char="${2:-"*"}"

  str_repeat $char $str_len
  echo "$char $str $char"
  str_repeat $char $str_len
}