I have this conditional in a script:
if [[ "${SUMAN_ENV}" != "local" ]]; then
./suman.sh $@ # run this script instead
# need to exit here
fi
if the condition is met, I'd like to run another script instead.
Is the best way to do this just to do this:
if [[ "${SUMAN_ENV}" != "local" ]]; then
./suman.sh $@
exit $? # exit with the code given by the above command
fi
or is there some other way?
File hello:
#!/bin/sh
echo "$0"
exec ./world
echo "$0"
File world:
#!/bin/sh
echo "$0"
exit 33 # to have an exit code example
Run hello:
$ ./hello
./hello
./world
$ echo $?
33
After hello runs world via exec and world finishes, the remainder of hello is not executed. The exit code is the one of world.
exec replaces the currently running process with the one specified. The PID is unchanged. Most of the resources for the original process are released.
exit 33 ? Isn't exit enough ?
exit would have been enough but in the question's snippets the 1st script explicitely exits with the exit value of the called 2nd script. So I wanted the 2nd one in my example have a different exit value than the 1st one to have distinguishable values. (No purple magic included there. No explicit exit would be ok too...)
exec is the key thing here I guess.
"$@"with quotes to handle arguments with whitespace correctly