bash script BASEDIR

abs_dirname.sh

# from: https://github.com/zimbatm/direnv/blob/3bb35d375331fca89614f0015b2a6cd21688ab79/bin/direnv
# usage: abs_dirname $filename
# finds the original $filename path and prints it's absolute folder path
abs_dirname() {
  prev_path="$1"
  # Resolve the symlink(s) recursively
  while true; do
    abs_path=`readlink "$prev_path"`
    if [ -z "$abs_path" ]; then
      abs_path="$prev_path"
      break
    else
      prev_path="$abs_path"
    fi
  done
  unset prev_path

  # Get the absolute directory of the final $abs_path
  orig_dir=`pwd`
  cd `dirname "$abs_path"`
  # prints an absolute path here
  pwd
  cd "$orig_dir"
  unset abs_path orig_dir
}

basedir.sh

#!/bin/bash

CURDIR=${PWD}
BASEDIR="$( cd "$( dirname "$(realpath $BASH_SOURCE)" )" && pwd )"

# This didn't support symlinked scripts
# BASEDIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"

basedir2.sh

#!/bin/bash

BASEDIR=$(dirname "$(readlink -f $0)")