![]() ![]() ![]() So it's always good to understand exit codes and how to manipulate them if you need to. Of course, if the node command is successful it'll exit with 0 and the || exit 0 does not run and is ignored. Drag photo, video or file here Cancel Comment. Bold Italic Insert Link Code Format Toggle. The || exit 0 will cleanly exit the postinstall if there's any error. Cybercrime isac cleanexit webinar freewebinar AICTE AICTEINDIA. I've used this same trick to fix a postinstall problem where the postinstall command in npm was failing which causes the entire npm install process to blow up. This program aims to empower the participants to analyze the risks of unethical or illegal behavior triggered by severe circumstances. The outer sh -c will run the first script (the inner sh -c) and if that fails, it will run exit 1 as specified with the || operator. This course ‘Professional Ethics at Workplace Plus Program, will teach you how influential organizational circumstances can push good people towards misconducts and unethical decisions. $ sh -c 'sh -c "exit 2" || exit 1' echo $? 1 # again, the OR _was_ used with exit 2 - failureĮxplanation of the lines above: the inner sh -c is a script that exits with the given code. $ sh -c 'sh -c "exit 1" || exit 1' echo $? 1 # the OR _was_ used You can see the results here: $ sh -c 'sh -c "exit 0" || exit 1' echo $? 0 # the OR was not used So || (or) reads as: if it failed then do X. Except in exit codes, remember, 0 is success (truthy), and 1 is failure ( falsy). If you've used to an or statement in code then you (like me) might think that exit 0 || exit 1 would result in 1 - since 0 is generally falsy. > Hello All, > Everytime I run and exit and EXE that I compiled, everything goes OK. Now if mocha fails with exit 2 it'll exit nodemon's exec with an exit 1 which nodemon sees as a failure. When I run mocha inside of nodemon, I use an bash or statement that reads "if this fails, fail with an exit 1": $ nodemon -exec "mocha || exit 1" The "fix" is only a few characters though. This is a weirdness of mocha that (misuses) the exit status reporting the number of failing tests. When I ran mocha, it was returning an exit code of 2. Then the shell value $? is the numerical status of the exit code from the last executed command. Running sh -c "…" runs the string as a bash command and returns the result. But to test this, you can run the following: $ sh -c "exit 0" If you try this in your terminal, the terminal will just close (since you're running exit). There's only a handful of standardised exit codes, but the ones of most interest are: When a process runs (in a unix-based system…I'm unsure how much applies to Windows), it will exit with a code. I've published 38 videos for new developers, designers, UX, UI, product owners and anyone who needs to conquer the command line today.
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