Executing multiple processes without waiting for their exit status. Post: 302473092

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exit status

i downloaded a text file from metalab.unc.edu called sh.txt and in this reference manual it refers to shell scripting exit status .. at the end of one of the examples that author gave an exit status of 127.. to what does a 127 exit status refer too and what is its purpose in the code. moxxx68

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I'm preparing for exam and one of exams is to write own test command... I wonder if in unix is a command which just returns exit code you specify.. I know I can easily write a function like this: exStatus() { return $1 } -> my question is rather theoretical thank you!

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Exit Status

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LEARN ABOUT OSX

nohup

NOHUP(1)						    BSD General Commands Manual 						  NOHUP(1)

NAME

     nohup -- invoke a utility immune to hangups

SYNOPSIS

     nohup [--] utility [arguments]

DESCRIPTION

     The nohup utility invokes utility with its arguments and at this time sets the signal SIGHUP to be ignored.  If the standard output is a ter-
     minal, the standard output is appended to the file nohup.out in the current directory.  If standard error is a terminal, it is directed to
     the same place as the standard output.

     Some shells may provide a builtin nohup command which is similar or identical to this utility.  Consult the builtin(1) manual page.

ENVIRONMENT

     The following variables are utilized by nohup:

     HOME  If the output file nohup.out cannot be created in the current directory, the nohup utility uses the directory named by HOME to create
	   the file.

     PATH  Used to locate the requested utility if the name contains no '/' characters.

EXIT STATUS

     The nohup utility exits with one of the following values:

     126     The utility was found, but could not be invoked.

     127     The utility could not be found or an error occurred in nohup.

     Otherwise, the exit status of nohup will be that of utility.

SEE ALSO

     builtin(1), csh(1), signal(3)

STANDARDS

     The nohup utility is expected to be IEEE Std 1003.2 (``POSIX.2'') compatible.

BUGS

     Two or more instances of nohup can append to the same file, which makes for a confusing output.

BSD
								   July 19, 2001							       BSD

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

exit status

Discussion started by: moxxx68

2. Shell Programming and Scripting

retrieving exit status from background processes

Discussion started by: MG537

3. Programming

parent not waiting until child complete executing another program through execl()

Discussion started by: vvaidyan

4. UNIX for Dummies Questions & Answers

monitoring 'waiting' processes

Discussion started by: jon80