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

abs_path () {    
   echo "$(cd $(dirname "$1");pwd)/$(basename "$1")"
}

dirname will give the directory name of /path/to/file, i.e. /path/to.

cd /path/to; pwd ensures that the path is absolute.

basename will give just the filename in /path/to/file, i.e.file.