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Bash Exit Immediately On Error


This is explained here, and a workaround (Bash only) is provided: #!/bin/bash set -e set -o pipefail ./configure | tee configure.log make share|improve this answer edited Dec 30 '15 at 1:13 But I find it still unreasonable to continue executing afte a syntax error. Aborting." fi AND and OR lists Finally, we can further simplify our script by using the AND and OR control operators. An OR list has the form command1 || command2 command2 is executed if, and only if, command1 returns a non-zero exit status. navigate here

will contain the exit status of the last command executed. Browse other questions tagged bash shell-script error-handling or ask your own question. Now I'm well aware that I could have an if check for each command (which I think is a hopeless solution), but is there a global setting to make the script Just do it like this: dosomething1 || exit 1 If you take Ville Laurikari's advice and use set -e then for some commands you may need to use this: dosomething ||

Bash Exit On Error With Message

BTW, it doesn't abort the whole program in this case, too. Within a script, an exit nnn command may be used to deliver an nnn exit status to the shell (nnn must This becomes more important as your programs get more complex and you start having scripts launching other scripts, etc. asked 5 years ago viewed 51707 times active 10 months ago Linked 192 What does set -e mean in a bash script?

In this article, I explain several techniques for writing robust bash scripts. If a program finishes successfully, the exit status will be zero. American English: are [ə] and [ʌ] different phonemes? Bash Exit On First Error rollback() { del_from_passwd $user if [ -e /home/$user ]; then rm -rf /home/$user fi exit } trap rollback INT TERM EXIT add_to_passwd $user cp -a /etc/skel /home/$user chown $user /home/$user -R

In particular you should use quotes around variables. I knew there had to be a better way than putting "|| exit 1" at the end of each command. If you would like this to fail, then you can use set -o pipefail to make it fail. use the [] for that.

Does mean=mode imply a symmetric distribution? Bash Exit On Any Error Is there a better way I hope? Or, without set -e: bash -n "$0" || exit –Daniel S Aug 27 '15 at 9:56 add a comment| up vote 4 down vote You are probably mislead about the genuine rm -rf $chroot/usr/share/doc If you ran the script above and accidentally forgot to give a parameter, you would have just deleted all of your system documentation rather than making a smaller

Bash Exit On Error Code

Meaning of "soul-sapping" Integral using residue theorem complex analysis How's the CMD trip bonuses from extra legs work? You can check for files with files open by using lsof. Bash Exit On Error With Message My home country claims I am a dual national of another country, the country in question does not. Bash Exit Script On Error Thread Tools Show Printable Version Subscribe to this Thread… Display Linear Mode Switch to Hybrid Mode Switch to Threaded Mode December 11th, 2008 #1 jasper.davidson View Profile View Forum Posts Private

Improving the error exit function There are a number of improvements that we can make to the error_exit function. check over here Problem? It is also important that your scripts return a meaningful exit status when they finish. Thank you very much, dwhitney67, that's exactly what I was looking for. Bash Exit If Error

as what you've observed (set -e no responding as you're expecting) is in fact very well documented. What does the "Phi" sign stand for in musical notation? This may help when using test or && or ||. –mouviciel Dec 7 '10 at 21:27 4 To expand on mouviciel's comment: in shell scripts, 0 always means success, and his comment is here Adv Reply December 11th, 2008 #5 dwhitney67 View Profile View Forum Posts Private Message Tolerant of Ubuntu Join Date Jun 2007 Location Maryland, US Beans 6,270 DistroKubuntu Re: Make shell

For example, if (( 5 * $b > 53 )). Bash Exit Status Variable Not the answer you're looking for? if [[ $status -ne 0 && "$2" != "ignore" ]] then echo "stopping..." exit $status fi } # Main execCmd "ls" echo "continuing..." echo execCmd "touch /foo" "ignore" # ignore error

Meaning of Guns and ghee My home country claims I am a dual national of another country, the country in question does not.

EDIT: I think I found a workaround, although it probably isn't the best solution again: Code: #!/bin/bash set -e cmd1 cmd2 #exclude next command from causing script to terminate: set +e; Using them, we can see how the $? Problem? Bash Throw Error This tells bash that it should exit the script if any statement returns a non-true return value.

See below for an example: #!/bin/bash cd some_dir ./configure --some-flags make make install So in this case if the script can't change to the indicated directory then it would certainly not eg. You want to be certain that something either happened correctly or that it appears as though it didn't happen at all.Say you had a script to add users. weblink UNIX is a registered trademark of The Open Group.