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Get path of bash script

31 Aug 2022

Example depth-indented listing of files

/
 |-/tmp
 |  |-foo
 |  |  |-bin
 |  |  |  |-script.sh
 |-/home
 |  |-mike
 |  |  |-bin
 |  |  |  |-script_link -> (symlink to /tmp/foo/bin/script.sh)

Script 1

#!/usr/bin/env bash
# content of /tmp/foo/bin/script.sh
BASE_PATH="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null && pwd )"
echo $BASH_PATH

Get script path by execute /tmp/foo/bin/script.sh

$ /tmp/foo/bin/script.sh
/tmp/foo/bin # script directoery

$ /home/mike/bin/script_link
/home/mike/bin # link directory

Script 2

Get path of current script when executed through a symlink

#!/usr/bin/env bash
# content of /tmp/foo/bin/script.sh
BASE_PATH="$(dirname "$(readlink "$0")")"
echo $BASH_PATH

$ /tmp/foo/bin/script.sh
. # current directory

$ /home/mike/bin/script_link
/tmp/foo/bin # script directory

Script 3

What about if get path of script when wexecuted through a symlink. 1

#!/usr/bin/env bash
# content of /tmp/foo/bin/script.sh
BASE_PATH="$( cd "$( dirname $(readlink "${BASH_SOURCE[0]}") )" >/dev/null && pwd )"
echo $BASH_PATH

$ /tmp/foo/bin/script.sh
/tmp/foo/bin # script directory

$ /home/mike/bin/script_link
/tmp/foo/bin # script directory

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