Shell function to return the absolute path of some arbitrary one

shell-function-get-absolute-path.md

#!/bin/sh

function abspath() { 
	pushd . > /dev/null; 
	if [ -d "$1" ]; then cd "$1"; dirs -l +0; 
	else cd "`dirname \"$1\"`"; cur_dir=`dirs -l +0`; 
	if [ "$cur_dir" == "/" ]; then echo "$cur_dir`basename \"$1\"`"; 
	else echo "$cur_dir/`basename \"$1\"`"; fi; fi; popd > /dev/null; 
}

echo abspath ~
echo "ABSPATH ~ = " && abspath ~