Link shortcut

lnk

#!/bin/bash
# Link shortcut

# Display usage if incorrect number of parameters given
if [ $# != 2 ]; then
  echo " ${0##*/} <source> <link> - ln shortcut"
  exit 1; fi

# Source absolute path
if [ ! -e "$1" ]; then
  echo "Non-exist: "$1""
  exit 1
else
  source="$(realpath "$1")"; fi

# Linkname absolute path
if [ -e "$2" ]; then
  # existent directory
  [ -d "$2" ] && link="$(realpath "$2")"
  # existent non-directory
  [ ! -d "$2" ] && { echo "Exists: "$2""; exit 1; }
else
  # non-existent directory
  if [[ "$2" == */ ]]; then { echo "Non-exist: "$2""; exit 1; }
  # linkname only
  elif [[ "$2" != */* ]]; then link="$(realpath .)/"$2""
  # linkname and parent directory
  elif [ -d "${2%/*}" ]; then link="$(realpath "${2%/*}")/"${2##*/}""
  # non-existent parent directory
  elif [ ! -d "${2%/*}" ]; then echo "Non-exist: "${2%/*}""; fi; fi

# Permission test
if [ -d "$link" ]; then
  if [ ! -w "$link" ]; then
    [ ! hash sudo 2>&- ] && { echo "Program required: "sudo""; exit 1; }
    sudo=sudo; fi
else [ ! -d "$2" ]
  if [ ! -w $(dirname "${link%/*}") ]; then
    [ ! hash sudo 2>&- ] && { echo "Program required: "sudo""; exit 1; }
    sudo=sudo; fi; fi

$sudo ln -sv "$source" "$link" | awk -F ' -> ' '{ print $2 " -> " $1 }' | GREP_COLOR='1;36' grep --color=always " ‘.*$"