Bash scripting shebang

Asked Nov 26 '18 at 12:29

Active Nov 26 '18 at 13:07

Viewed 63 times

I have this simple script:

#!/bin/dash
echo "Shell used:" $SHELL

I expected to get:

Shell used: /bin/dash

But instead of the output is:

Shell used: /bin/bash

I'm running the script as:

./my_script.sh

edited Nov 26 '18 at 12:59

Micha Wiedenmann

asked Nov 26 '18 at 12:29

4

dash doesn't modify or set `$SHELL` environment. – Ipor Sircer Nov 26 '18 at 13:00
Thank you, all these terms are quite new to me – Juan Reina Pascual Nov 26 '18 at 13:05
1

Strongly related to [How to determine the current shell I'm working on?](https://stackoverflow.com/questions/3327013/how-to-determine-the-current-shell-im-working-on) – Socowi Nov 26 '18 at 13:07
about SHELL environment variable https://unix.stackexchange.com/questions/277944/what-sets-the-shell-environment-variable – Nahuel Fouilleul Nov 26 '18 at 13:09
1

Your script just prints contents of `$SHELL` variable inherited from the parent process. For example, if you ran your script like that: `SHELL=aaa ./script.sh` it would print: `Shell used: aaa`. – Arkadiusz Drabczyk Nov 26 '18 at 13:50

0 Answers0