Get the path to the script

get_script_path.sh

#!/usr/bin/env bash

function ostype() {
    unameOut="$(uname -s)"
    case "${unameOut}" in
        Linux*)     machine=Linux;;
        Darwin*)    machine=Mac;;
        CYGWIN*)    machine=Cygwin;;
        MINGW*)     machine=MinGw;;
        *)          machine="UNKNOWN:${unameOut}"
    esac
    echo ${machine}
}
function safe_realpath() {
   OSTYPE=$(ostype)  
   if [ -x "$(command -v realpath)" ]; then
      #echo "realpath found !"
      realpath $1
      return
   fi
   if [ "$OSTYPE" == "Mac" ]; then
      # we dont try readlink in Mac since it is different 
      # readlink (BSD) used in Linux
      echo "realpath is not avaialbe emulating it with python (Mac)"
      python -c 'import os,sys;print(os.path.realpath("'"$1"'"))'
      exit 0
   fi
   if [ -x "$(command -v readlink)" ]; then
      #echo "Using readlink"
      readlink -f $1
      return
   fi
   # I am not sure if it comes to this fallback...
   echo "realpath is not avaialbe emulating it with python"
   python -c 'import os,sys;print(os.path.realpath("'"$1"'"))'
}

SCRIPT=$(safe_realpath  "$BASH_SOURCE")
SCRIPT_PATH=$(dirname $SCRIPT)