无论当前/工作目录如何，脚本目录路径

Question

Is there a way to get the script directory regardless of change in current directory that occurred during script execution.

echo $(dirname "$(readlink -f "$0")")
cd /tmp
echo $(dirname "$(readlink -f "$0")")

/home/user/test
/tmp

In the example above, I need /home/user/test both times, without storing it to a variable.

Answer 1

This should do the job in your script:

dir="$(readlink /proc/$PPID/cwd)"