exit-code

In a Bash script, how can I exit the entire script if a certain condition occurs?

由 假如想象 提交于 2019-11-26 18:42:13
问题 I'm writing a script in Bash to test some code. However, it seems silly to run the tests if compiling the code fails in the first place, in which case I'll just abort the tests. Is there a way I can do this without wrapping the entire script inside of a while loop and using breaks? Something like a dun dun dun goto? 回答1: Try this statement: exit 1 Replace 1 with appropriate error codes. See also Exit Codes With Special Meanings. 回答2: Use set -e #!/bin/bash set -e /bin/command-that-fails /bin

How do you capture stderr, stdout, and the exit code all at once, in Perl?

由 半城伤御伤魂 提交于 2019-11-26 18:41:29
Is it possible to run an external process from Perl, capture its stderr, stdout AND the process exit code? I seem to be able to do combinations of these, e.g. use backticks to get stdout, IPC::Open3 to capture outputs, and system() to get exit codes. How do you capture stderr, stdout, and the exit code all at once? Michael Carman If you reread the documentation for IPC::Open3, you'll see a note that you should call waitpid to reap the child process. Once you do this, the status should be available in $? . The exit value is $? >> 8 . See $? in perldoc perlvar . ( Update : I updated the API for

Exit codes in Python

由 二次信任 提交于 2019-11-26 18:23:24
I got a message saying script xyz.py returned exit code 0 . What does this mean? What do the exit codes in Python mean? How many are there? Which ones are important? Dave Costa What you're looking for in the script is calls to sys.exit() . The argument to that method is returned to the environment as the exit code. It's fairly likely that the script is never calling the exit method, and that 0 is the default exit code. Eigir From the documentation for sys.exit : The optional argument arg can be an integer giving the exit status (defaulting to zero), or another type of object. If it is an

Windows command interpreter: how to obtain exit code of first piped command

由 雨燕双飞 提交于 2019-11-26 18:19:20
问题 In the example provided below, I execute nmake and then redirect STDOUT/STDERR to tee, which then sends it to the screen, and also to a log file. The problem is that I'm trying to capture the exit code for nmake and not tee. What I need is the exit code from nmake, and not tee. nmake | tee output.txt 回答1: You might think you could do something like the following, but it won't work. (nmake & call set myError=%%errorlevel%%) | tee output.txt The problem lies in the mechanism by which Windows

gcc-4.2 failed with exit code 1 iphone

由 久未见 提交于 2019-11-26 16:32:48
I've seen this error with different variations on discussion forums but being a non programmer I'm not sure how to progress this. Basically I have code which I found to help me with changing the background colors of cells on a grouped uitableview. The code introduced a line as such: CGContextAddArcToPoint(c, minx, miny, midx, miny, ROUND_SIZE); This gave an error indicated that it wasn't declared, so I added to my .h file the following under import uikit: #import <UIKit/UIKit.h> #define ROUND_SIZE 10 Now it shows that I have an error: Command/Developer/Platforms/iPhoneSimulator.platform

What is a thread exit code?

由 喜你入骨 提交于 2019-11-26 16:28:39
What exactly is a thread exit code in the Output window while debugging? What information it gives me? Is it somehow useful or just an internal stuff which should not bother me? The thread 0x552c has exited with code 259 (0x103). The thread 0x4440 has exited with code 0 (0x0). Is there maybe some sort of list of possible exit codes along with its significance? Sayse There actually doesn't seem to be a lot of explanation on this subject apparently but the exit codes are supposed to be used to give an indication on how the thread exited, 0 tends to mean that it exited safely whilst anything else

ruby system command check exit code

由 做~自己de王妃 提交于 2019-11-26 15:36:45
问题 I have a bunch of system calls in ruby such as the following and I want to check their exit codes simultaneously so that my script exits out if that command fails. system("VBoxManage createvm --name test1") system("ruby test.rb") I want something like system("VBoxManage createvm --name test1", 0) <-- where the second parameter checks the exit code and confirms that that system call was successful, and if not, it'll raise an error or do something of that sort. Is that possible at all? I've

Exit code of variable assignment to command substitution in Bash

由 为君一笑 提交于 2019-11-26 13:47:49
问题 I am confused about what error code the command will return when executing a variable assignment plainly and with command substitution: a=$(false); echo $? It outputs 1 , which let me think that variable assignment doesn't sweep or produce new error code upon the last one. But when I tried this: false; a=""; echo $? It outputs 0 , obviously this is what a="" returns and it override 1 returned by false . I want to know why this happens, is there any particularity in variable assignment that

Exit codes in Python

由 旧城冷巷雨未停 提交于 2019-11-26 08:54:53
问题 I got a message saying script xyz.py returned exit code 0 . What does this mean? What do the exit codes in Python mean? How many are there? Which ones are important? 回答1: What you're looking for in the script is calls to sys.exit(). The argument to that method is returned to the environment as the exit code. It's fairly likely that the script is never calling the exit method, and that 0 is the default exit code. 回答2: From the documentation for sys.exit: The optional argument arg can be an

“rd” exits with errorlevel set to 0 on error when deletion fails, etc

由 孤街醉人 提交于 2019-11-26 08:32:42
问题 I\'m writing a batch (.bat) script and I need to handle the case in which the deletion of a folder fails. I\'m using %errorlevel% to catch the exit code, but in the case of the rd command it seems not to work: C:\\Users\\edo\\Desktop>rd testdir Directory is not empty C:\\Users\\edo\\Desktop>echo %errorlevel% 0 Why? What do you suggest? 回答1: Wow, this is the 2nd case I've seen where ERRORLEVEL is not set properly! See File redirection in Windows and %errorlevel%. The solution is the same as
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