These processes are only finishing 5 seconds ahead of the wait, and I'm not able to force either shell to return 127 from wait. They refer to these codes as being reserved and recommend that: According to the above table, exit codes 1-2, 126-165, and 255 have special meanings, and should therefore be avoided for Bash (or any other Unix shell) won’t do anything special (such as running exception handlers) if a user script exits with one of these error codes. The exit status is used by the Bash conditional commands (see Conditional Constructs) and some of the list constructs (see Lists). navigate here
Why? EDIT: Not immediately deducible, except for the output on the console, but this is stack overflow, so I assume you're doing this in a script. It's quite handy for observing how some programs follow the exit code conventions and some don't, for learning about exit code conventions, or just for being able to see what's going Other values do not give problems as they may be distinguished from the shell-special $?
if [ $? -ne 0 ];then echo "Error type" exit 1 fi share|improve this answer answered Nov 10 '15 at 13:34 Centimane 1,317417 add a comment| up vote 4 down vote It seems that the author of the Advanced Bash-Scripting Guide agrees with the BSD attempts to standardise exit codes (sysexits.h) and is simply recommending that when users write shell scripts, they Not the answer you're looking for? Shell Variable The shell variable name $?
If it comes up empty, next step is checking execution bit and PATH. –cr125rider Jun 12 '14 at 16:33 4 @cr125rider, which is not particularly accurate -- it doesn't know And can be generated with: #!/bin/sh src=/usr/include/sysexits.h echo "# Generated from \"$src\"" echo "# Please inspect the source file for more detailed descriptions" echo < "$src" sed -rn 's/^#define *(\w+)\s*(\d*)/\1=\2/p'| sed The Woz Monitor Now I know my ABCs, won't you come and golf with me? Bash Error Code Handling The time now is 07:43 PM.
Exit statuses from shell builtins and compound commands are also limited to this range. Bash 101 Hacks eBook Sed and Awk 101 Hacks eBook Vim 101 Hacks eBook Nagios Core 3 eBook Copyright © 2008–2015 Ramesh Natarajan. Join them; it only takes a minute: Sign up 127 Return code from $? Integral using residue theorem complex analysis Is there a good way to get from Levoča to Lviv?
How could banks with multiple branches work in a world without quick communication? Bash Error Code 2 You may not have sufficient permissions, or the command dependencies may not be installed. I assume bash. Link Cancel reply Leave a Comment Name Email Website Comment Notify me of followup comments via e-mail Next post: UNIX / Linux: 10 Netstat Command Examples Previous post: How to Execute
Code: 0 Successful completion. 1-126 An error occurred. 127 A specified pid or job-id has terminated or is unknown by the invoking shell. You may need to add path to the command to PATH environment variable. Error Code 127 In Unix Reserved Exit CodesExit Code NumberMeaningExampleComments1Catchall for general errorslet "var1 = 1/0"Miscellaneous errors, such as "divide by zero" Bash Error Code 255 You can also try to run the respective command from terminal (with the same account that you use with WinSCP), to verify that you can execute it.
Relevant POSIX specifications I researched what POSIX has to say about exit codes and the POSIX specification seems to concur with the author of the Advanced Bash-Scripting Guide. check over here Remove advertisements Sponsored Links agama View Public Profile Find all posts by agama #5 11-10-2011 tostay2003 Registered User Join Date: Aug 2007 Last Activity: 1 September 2016, 12:26 Will the medium be able to last 100 years? My home country claims I am a dual national of another country, the country in question does not. Bash Error Code Of Previous Command
Also make sure that the startup script that sets PATH is actually executed for non-interactive sessions. Also, is it possible that the script is invoking something else and just letting that return flow back to your driver? Much better to use type, a shell builtin which knows about all of those things. –Charles Duffy Sep 11 '14 at 22:45 I didn't know about type, thanks –cr125rider his comment is here I’ve quoted the relevant POSIX specifications (emphasis mine): Exit Status for Commands Each command has an exit status that can influence the behavior of other shell commands.
Please explain the local library system in London, England Why does Windows show "This device can perform faster" notification if I connect it clumsily? Bash Error Code Of Last Command An exit status of zero indicates success. This site is not affiliated with Linus Torvalds or The Open Group in any way.
Notices Welcome to LinuxQuestions.org, a friendly and active Linux Community. returns 137 (128 + 9) #255* Exit status out of range exit -1 exit takes only integer args in the range 0 - 255 EOF $(which kill) -l |tr ' ' A similar standard for scripting might be appropriate. Bash Error Code Variable is a special built-in variable which has the exit status of the last command executed.
This table of exit codes is useful as it provides more details – and examples of how to generate the error codes documented in the Bash reference. Any Ideas how to do that effectively. This seemingly counter-intuitive scheme is used so there is one well-defined way to indicate success and a variety of ways to indicate various failure modes. Tweet >Add your comment If you enjoyed this article, you might also like.. 50 Linux Sysadmin Tutorials 50 Most Frequently Used Linux Commands (With Examples) Top 25 Best Linux Performance
How rich can one single time travelling person actually become? If a command is not found, the child process created to execute it returns a status of 127. 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 For example, exit 3809 gives an exit code of 225 (3809 % 256 = 225).An update of /usr/include/sysexits.h allocates previously unused exit
share|improve this answer edited Jan 2 '13 at 8:34 answered Nov 19 '09 at 13:08 Oldskool 19k63156 11 This also happens if a bash script does not have mode "+x" A simple visual puzzle to die for How to pluralize "State of the Union" without an additional noun?