Say I have a bash function:
run_stuff(){
if is_in_script; then
exit 1
fi
return 1;
}
basically, if I am running it in a script:
$ ./my-script.sh
then I want to exit with 1, but if I am running it directly in the terminal:
$ run_stuff
then I want to return 1 (o/w my terminal window will close)
what is the best way to check this cross-platform?
You can use $0.
echo $0 when run in my (bash) terminal returns -bash.
echo $0 in a script with no #! run with bash test.sh returns test.sh
echo $0 in a script with #!/bin/bash run as ./test.sh returns ./test.sh
It's not bullet proof, but you can check whether the current shell is interactive:
is_in_script() {
[[ $- == *i* ]]
}
However, I would just make run_stuff always return, and if a script should exit when the command reports failure, it can do run_stuff || exit rather than leaving this behavior up to the function itself.
