Bash script absolute path with OS X

Question

I am trying to obtain the absolute path to the currently running script on OS X.

I saw many replies going for readlink -f $0. However since OS X\'s

Answer 1

realpath for Mac OS X

realpath() {
    path=`eval echo "$1"`
    folder=$(dirname "$path")
    echo $(cd "$folder"; pwd)/$(basename "$path"); 
}

Example with related path:

realpath "../scripts/test.sh"

Example with home folder

realpath "~/Test/../Test/scripts/test.sh"