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Bash Get Return Code Of Last Command


foo_ret=$(cat "$foo_ret_file"; rm -f "$foo_ret_file") share|improve this answer edited Jan 15 '15 at 5:58 mikeserv 38k444114 answered Jun 3 '11 at 0:33 Gilles 386k747071158 1 When using the temporary file bash unix ksh exit share|improve this question edited Dec 30 '13 at 19:34 javaPlease42 1,2831334 asked Nov 21 '11 at 12:32 Kolesar 3391925 add a comment| 4 Answers 4 active oldest If you worry that your someprog might write to file descriptor 3 or 4 then it is best to close the file descriptors before calling someprog. (((((exec 3>&- 4>&-; someprog); echo The temporary file may be read before it's written. 2. check over here

That means someprog will inherit open file descriptor 3 and 4. up vote 10 down vote favorite 2 I wish to use shell to invoke a script on a remote server. Solve problems - It's Free Create your account in seconds E-mail address is taken If this is your account,sign in here Email address Username Between 5 and 30 characters. more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed

Bash Get Return Code Of Last Command

Each step adds to FD 9 only, if there was an error. Good luck. –shellter May 1 '13 at 21:46 And perl -V:sh (uppercase V) will tell you which shell it uses. –ikegami May 2 '13 at 0:15 add a comment| Word that means "to fill the air with a bad smell"? Find all posts by bbouch #2 02-20-2002 PxT Registered User Join Date: Oct 2000 Last Activity: 7 May 2009, 12:22 PM EDT Location: Sacramento, CA Posts: 909

I tried the following: returncode=$(rsh spns31 ". /u/produser/.profile.spn31; sas ${SLIB}spbmb.test -LOG \"$JOBDIR/\"; ") but returncode is always a 0. more hot questions question feed default about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation In the meantime if you've got a debian box handy you can try it in dash, or if you've got busybox handy you can try it with the busybox ash/sh. –mtraceur Ksh Eval returns to me the exit code of the 'rsh'.

Is this possible? Ksh Exit Code Why is Rogue One allowed to take off from Yavin IV? Example output: filtered line1 filtered line2 filtered line3 42 Note: the child process inherits the open file descriptors from the parent. I've actually used this in a script before thinking it did what the OP wanted.

What does this bus signal representation mean How to describe a person who always prefers things from other countries but not from their home countries? Ksh If Condition Does Ohm's law hold in space? Of course, his particular example scriptlet is not the only way of doing it, but the basic idea is there. 0 Message Author Comment by:maerkima ID: 80813742003-03-06 Well It's just What is shiny and makes people sad when it falls?

Ksh Exit Code

What could be the problem 7 104 79d Excel file not created as expected 7 26 4d Sudoku, a complete MFC application. The company accepts no liability for any damage caused by any virus transmitted by this email. Bash Get Return Code Of Last Command Updated Likes 0 Comments 0 ITM Agent Insights: ... Bash Assign Exit Code To Variable A pipe is created and the commands on the left (#part3) and right (#part2) are executed.

The remote script sets the RC correctly, but the local script can't see it. check my blog Thanks so much. PCMag Digital Group AdChoices unused MenuExperts Exchange Browse BackBrowse Topics Open Questions Open Projects Solutions Members Articles Videos Courses Contribute Products BackProducts Gigs Live Courses Vendor Services Groups Careers Store Headlines At the top of /tmp/ff I have #!/bin/bash -o pipefail. Bash If Exit Code Not 0

Is there any way to get at it? if [ $ret_code != 0 ]; then printf "Error : [%d] when executing command: '$cmnd'" $ret_code exit $ret_code fi } command="ls -l | grep p" safeRunCommand "$command" Now if you look Special operations on a list Why call it a "major" revision if the suggested changes are seemingly minor? this content So this is the simplest portable way to do it.) You can look at it in a less technical and more playful way, as if the outputs of the commands are

I'm on twitter at @brian_smi Google Twitter LinkedIn RSS Related posts Fixing Rational Func... Unix Exit Codes Reply Link nixCraft March 23, 2008, 9:53 amUse ps and jobs commands Reply Link Greg Wells October 24, 2008, 7:33 pmYou can use conditional control operators if you omit the echo This answer assumes following: You have a shell which does not know of $PIPESTATUS nor set -o pipefail You want to use a pipe for parallel execution, so no temporary files.

now is 0 only if all commands had exit code 0 Explained: A tempfile is created with mktemp.

You can see the issue here: $ bar() { foo=$(ls asdkjasd 2>&1); echo $?; }; bar 2 $ bar() { local foo=$(ls asdkjasd 2>&1); echo $?; }; bar 0 $ bar() The signature will be inserted beneath users' latest emails in conversations and will be displayed in users' Sent Items… CodeTwo Exchange Outlook Email Software Advertise Here 592 members asked questions and To solve 1, read the file after the pipeline has completed. Bash Not Equal Simple, but not that simple in production: If there are multiple scripts running concurrently, or if the same script uses this method in several places, you need to make sure they

Very detailed breakdown here:… Also, that comment of yours read as if it was meant to be kinda insulting? –mtraceur Jun 5 '15 at 12:17 Where shall I unique stamp per SSH login Is there a limit to the number of nested 'for' loops? This is the simplest and what it does is basically set the exit status $? have a peek at these guys For the function I might just do (read; exit $REPLY) –jthill Mar 2 at 1:03 add a comment| up vote 16 down vote Starting from the pipeline: foo | bar |

will show it. –tobias.mcnulty Apr 24 '12 at 14:55 1 Note that -o pipefail is not in POSIX. –scy Jan 25 '13 at 15:15 1 This does not work is not affiliated with or endorsed by any company listed at this site. to the command inverts the return code. inverts the exit status returned.

Adding a ! Here is output on bash -x . + command='ls java' + safeRunCommand ls java + cmnd='ls java' + ls java . Also, when you have to debug your bash scripts, execute with '-x' flag. [bash -x]. my $output = `rsh myserver $command`; die "Can't create child: $!\n if $? < 0; die "Child killed by signal ".($? & 0x7F)."\n" if $? & 0x7F; die "Child exited with

LVL 14 Overall: Level 14 System Programming 5 Message Accepted Solution by:chris_calabrese chris_calabrese earned 50 total points ID: 80814842003-03-06 I've seen things like this that work quite well (in ksh) function You can get rid of all, but this clobbers the recipe too much, so it is not covered here: All you want to know is that all commands in the PIPE Coup: Can you assassinate yourself? This means that the output of filter is the stdout of the entire construct.

Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the more hot questions question feed lang-sh about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation The wait is needed for ksh, because ksh else does not wait for all pipe commands to finish. If you found this information useful or interesting please subscribe to my blog so you can be notified of new posts (click the "Follow this blog" button in the upper right

Join our community for more solutions or to ask questions. And it is working fine. Follow him on Twitter. asked 5 years ago viewed 66401 times active 2 months ago Linked 11 How can I pipe output to another process, but retain the error state of the first process? 5

So the latter is probably best to keep in mind and use for general-purpose cases. It was not specified so I provided a qualified answer.