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A temporary variable is the standard and preferred way to get the effect you're looking for. special variable to print the exit code of the script. Reply Link tuh July 12, 2011, 5:45 pmMaybe Chris will see this, or maybe not. This would execute the command for every found file. http://computerhelpdev.com/exit-code/return-code-126-bash.php

Reply Link saravanakumar June 12, 2011, 2:44 pmVery useful…thanks a lot…its makes me to understand about "$?". share|improve this answer edited Sep 18 '08 at 6:20 answered Sep 18 '08 at 6:10 Jeff Hill 41.8k3116 1 This should really be the top answer: it's much, much easier Is it possible? One thing I have noticed is sometimes scripts use exit codes and sometimes they don't.

Bash If Exit Code Not 0

It can also return a value, which is available to the script's parent process.

Every command returns an exit status (sometimes referred to as a return status

Consider following shell script:#!/bin/bash echo -n "Enter user name : " read USR cut -d: -f1 /etc/passwd | grep "$USR" > /dev/null OUT=$? So, ssh returns zero in that instance. We can also use this variable within our script to test if the touch command was successful or not. Exit Bash Shell still relevant directly to this one, so leaving it, but sorry for the dupe.

Hacker used picture upload to get PHP code into my site Why leave magical runes exposed? with zsh: The exit codes are provided in the pipestatus special array. ls | bogus_command # bash: bogus_command: command not found echo $? # 0 # Note that the ! browse this site Join them; it only takes a minute: Sign up Getting exit code of last shell command in another script up vote 25 down vote favorite 6 I am trying to beef

true\" = $?" # 1 # Note that the "!" needs a space between it and the command. # !true leads to a "command not found" error # # The '!' Exit Code 0 is always the same as ${PIPESTATUS: -1}. ... Well-behaved UNIX commands, programs, and utilities return a 0 exit code upon successful completion, though there are some exceptions.

Likewise, functions within a script and the script my problem would be solved, but I actually like that I can tack it at the end of a command and I fear complications of this second solution.

Last Exit Code Destiny

If scripts do not properly use exit codes, any user of those scripts who use more advanced commands such as list constructs will get unexpected results on failures. What is the name of these creatures in Harry Potter and the Deathly Hallows? Bash If Exit Code Not 0 But anyway, since you appear to be testing whether or not the command sudo can be found in the shell's builtin -p portable path string with command, I would think you Bash Script Exit On Error That helped.

Should we eliminate local variables if we can? my review here Written by Benjamin Cane on 2014-09-02 14:45:00| 4 min read Lately I've been working on a lot of automation and monitoring projects, a big part of these projects are taking existing Parking lot supervisor Did 17 U.S. What are the benefits of an oral exam? Bash Set Exit Code

You can save the exit status using a variable: command -p sudo ... In this case i want to exit only if the first command is found (exit code != 127). It can also return a value, which is available to the script's parent process.

Every command returns an exit status (sometimes referred to as a return status click site I am aware of the fact that if I change it to work more like time, e.g.

Join them; it only takes a minute: Sign up Exit Shell Script Based on Process Exit Code up vote 250 down vote favorite 78 I have a shell script that executes Bash Return Value From Function Exit and Exit Status... Join them; it only takes a minute: Sign up How to output return code in shell?

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command -p sudo; then exit; fi which would have the same results for your example. –jordanm Jun 13 '15 at 13:44 ok, what if i want to test for asked 8 years ago viewed 259974 times active 1 year ago Linked 2 Linux - Capture exit code of a ruby script 14 Shell status codes in make 19 NodeJS Managed cmd1 exit code is in ${PIPESTATUS[0]}, cmd3 exit code in ${PIPESTATUS[2]}, so that $? Last Exit Code Destiny Solved contains the exit code of the last command (0 = success, >0 = error-code) You can use the output of find with the -exec flag, like this: find -name '*.wsdl' -exec

doesn't contain the paths. –choroba Aug 11 '16 at 21:54 My apologies, I was confused by the misuse of the term return in the question. The Linux Documentation Project has a pretty good table of reserved exit codes and what they are used for. share|improve this answer answered Jun 13 '15 at 15:21 Scott 3,92821428 add a comment| up vote 0 down vote To answer your direct question, no, it's not possible to keep $? http://computerhelpdev.com/exit-code/bash-get-return-code.php The last command executed in the function or script determines the exit status.

share|improve this answer answered Jun 14 '15 at 0:48 David Z 456310 @mikeserv I'm not sure I understand - are you talking about manually assigning to $? share|improve this answer edited Mar 17 '12 at 19:37 gatoatigrado 7,684445102 answered Jan 29 '09 at 22:07 Vladimir Graschenko add a comment| up vote 16 down vote for bash: # this with bash: The exit codes are provided in the PIPESTATUS special array. All UNIX and Linux command has a several parameters or variables that can be use to find out the exit status of command.

But I haven't tested this. asked 5 years ago viewed 20842 times active 4 years ago Related 774How do I prompt for Yes/No/Cancel input in a Linux shell script?1290In the shell, what does “ 2>&1 ” Dealing with "friend" who won't pay after delivery despite signed contracts more hot questions question feed lang-sh about us tour help blog chat data legal privacy policy work here advertising info If you want to execute a command with all found files as arguments use a + at teh end like this: find -name '*.wsdl' -exec emacs {} + This would open

This is Bash's way of giving functions a "return value." [1]

Following the execution of a pipe, a $? gives the exit status of EDIT: I forgot to mention that i prefer a POSIX-complaint solution for better portability. Well-behaved UNIX commands, programs, and utilities return a 0 exit code upon successful completion, though there are some exceptions.

Likewise, functions within a script and the script Cryptic crossword clue Falsely accused of cheating in college What is a non-vulgar synonym for this swear word meaning "an enormous amount"?

Sort an array of integers into odd, then even Null check OR isEmpty Check 12 hour to 24 hour time converter list of files based on permission Should we eliminate local The last exit $? It's free: ©2000-2017 nixCraft.