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

I was looking for a solution for use in a system provision script, i.e., run before Homebrew is even installed. Lacking a proper solution I'd just offload the task to a cross-platform language, e.g., Perl:

script_abspath=$(perl -e 'use Cwd "abs_path"; print abs_path(@ARGV[0])' -- "$0")

More often what we actually want is the containing directory:

here=$(perl -e 'use File::Basename; use Cwd "abs_path"; print dirname(abs_path(@ARGV[0]));' -- "$0")