Linux Error Codes

Linux Error Codes Exit codes indicate success or failure when ending a program and they fall between 0 and 255 The shell and its builtins may use the values above 125 specially to indicate specific failure modes so the list of codes can vary between shells and operating systems e g Bash uses the value 128 N as the exit status

DESCRIPTION errno looks up errno macro names errno codes and the corresponding descriptions For example if given ENOENT on a Linux system it prints out the code 2 and the description No such file or directory If given the code 2 it prints ENOENT and the same description Stack Exchange Network Stack Exchange network consists of 183 Q A communities including Stack Overflow the largest most trusted online community for developers to learn share their knowledge and build their careers

Linux Error Codes

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Linux Error Codes
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When calling execl I get an errno 2 What does it mean How can I know the meaning of this errno In most Linux distributions the according package is called moreutils Therefore use sudo apt install moreutils pacman S moreutils or whatever package manager your system uses

1 127 is the available range Anything over 127 is supposed to be abnormal exit terminated by a signal It should be perfectly fine to misuse this value for any other purpose it only matters in one off scripts running under git bisect for seeking out a specific error and they must control their exit status tightly anyway

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In practice Linux or rather bash does it differently The valid range of return codes is 0 to 255 i e unsigned To be on the safe side in terms of avoiding confusion it s probably a good idea to just assume that return codes are unsigned and cast anything you get back from wait to unsigned I am trying to compile a program written in Fortran using make I have a Makefile and while in the directory containing the Makefile I type the command make target where target is a system

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Linux Error Codes
Documentation How Do I Get The List Of Exit Codes and or Return

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Exit codes indicate success or failure when ending a program and they fall between 0 and 255 The shell and its builtins may use the values above 125 specially to indicate specific failure modes so the list of codes can vary between shells and operating systems e g Bash uses the value 128 N as the exit status

Linux Error Codes Learn How Linux Error Codes Works
Command Line What Are The Standard Error Codes In Linux Unix

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DESCRIPTION errno looks up errno macro names errno codes and the corresponding descriptions For example if given ENOENT on a Linux system it prints out the code 2 and the description No such file or directory If given the code 2 it prints ENOENT and the same description


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Linux Error Codes - It should be perfectly fine to misuse this value for any other purpose it only matters in one off scripts running under git bisect for seeking out a specific error and they must control their exit status tightly anyway