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Linux Error Code Values

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Make sure to bookmark this article for future reference. Macro: int EDIED On GNU/Hurd systems, opening a file returns this error when the file is translated by a program and the translator program dies while starting up, before it has Macro: int ENOTSUP Not supported. When you call aio_cancel, the normal result is for the operations affected to complete with this error; see Cancel AIO Operations. http://globalinfoindex.com/error-code/linux-error-code-22.php

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 The author of this document proposes restricting user-defined exit codes to the range 64 - 113 (in addition to 0, for success), to conform with the C/C++ standard. true echo "exit status of \"! Most functions indicate that they detected an error by returning a special value, typically NULL for functions that return pointers, and −1 for functions that return integers. http://www.thegeekstuff.com/2010/10/linux-error-codes

Linux Errno Example

Retrieved 2013-09-12. ^ errno.h:system error numbers–Base Definitions Reference, The Single UNIX® Specification, Issue 7 from The Open Group ^ "Error numbers - cppreference.com". You could explain more each error so that beginners really get the problem behind it (even if it is generic). Macro: int E2BIG Argument list too long; used when the arguments passed to a new program being executed with one of the exec functions (see Executing a File) occupy too much Traditionally, the shell only stores an 8-bit return code, but sets the high bit if the process was abnormally terminated. $ sh -c 'exit 42'; echo $? 42 $ sh -c

E.g., termination by SIGINT (signal 2) results in exit status 130. Macro: int EFAULT Bad address; an invalid pointer was detected. But you gave nothing special more than formatting the contents of the linux errno headers. Errno.h In C Why is this child portrait not compelling?

O_EXCL flag is used with O_CREAT, if the file is already exist open call will fail with the proper error number. $ cat fileopen.c #include #include #include #include Posix Error Codes Macro: int ENFILE There are too many distinct file openings in the entire system. You get this error when you try to transmit data over a connectionless socket, without first specifying a destination for the data with connect. check my blog But this does not reflect reality: I am not aware of any common Unix utility that returns 64 on incorrect invocation (examples welcome).

Bibliography[edit] W. Errno.h Windows See Socket Addresses. You can choose to have functions resume after a signal that is handled, rather than failing with EINTR; see Interrupted Primitives. This error is never generated by GNU/Hurd systems, but it can result from an operation to an NFS server running another operating system.

Posix Error Codes

C libraries in many older Unix systems have EWOULDBLOCK as a separate error code. http://www.tldp.org/LDP/abs/html/exitcodes.html See Job Control, for information on process groups and these signals. Linux Errno Example Macro: int EPROGMISMATCH ??? Linux Errno To String Looking up error codes manually is ill advise IMO.

Addison-Wesley Professional. weblink How should a "working mathematician" think about sets? (ZFC, category theory, urelements) What's the appropriate range for the angle of a slide? Often using a debugger to run a program is considered having it open for writing and will cause this error. (The name stands for “text file busy”.) This is not an fork can return this error. Errno.h Linux Kernel

See Sockets. Macro: int ENETRESET A network connection was reset because the remote host crashed. The file was the wrong type for the operation, or a data file had the wrong format. http://globalinfoindex.com/error-code/linux-error-code-1.php c bash return-value ubuntu-10.04 share|improve this question asked Nov 10 '11 at 16:34 ysap 3,16512569 3 Return values are by definition error codes.

Running the C-shell or tcsh may give different values in some cases.

Notes[1]Out of range exit values can result Ebadf So, unfortunately, the unix powers that be don't seem to enforce any logical set of rules, even on very commonly used executables. You cannot use the return value to communicate some other numeric value, it is necessarily used to indicate success (0) or an error (non-zero).

Macro: int ENOSYS Function not implemented.

Some of these are marked POSIX.1, indicating that the name is defined by POSIX.1-2001, or C99, indicating that the name is defined by C99. Macro: int EMFILE The current process has too many files open and can’t open any more. Value for exit status 4 Detecting meaning of system() function's return value in Linux 5 Java processbuilder exitvalues 2 Confirm existance of executable (script, bat, cmd, exe) via a ruby file Errno 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

Macro: int ENOBUFS The kernel’s buffers for I/O operations are all in use. The 11 on segfault is interesting, as 11 is the signal number that the kernel uses to kill the process in the event of a segfault. Any library function can alter the value stored before return, whether or not they detect errors. his comment is here In brief, termination due to an uncaught signal results in exit status 128+[.

For example, "Error no is : 17", which doesn't really say much. Read more about Ramesh Natarajan and the blog. Join them; it only takes a minute: Sign up What is the valid range for program return value in Linux/bash? Why is Cuba still leasing Guantanamo Bay to the US?

O_CREAT flag is to create a file, if the file does not exist. When you are running some program on Linux environment, you might notice that it gives some error number. This should not cause any problems, since there is no overlap or conflict in usage of exit codes between compiled C/C++ binaries and shell scripts.

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Macro: int EADDRNOTAVAIL The requested socket address is not available; for example, you tried to give a socket a name that doesn’t match the local host name. There are two flags in the open call. Bash keeps the lower 7 bits of the status and then uses 128 + (signal nr) for indicating a signal. Generate all brace-strings of length n The eruption of Eyjafjallajökull?