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Full Discussion: A doubt on Daemons
Operating Systems Linux A doubt on Daemons Post 74659 by Sergiu-IT on Saturday 11th of June 2005 01:37:30 PM
Old 06-11-2005
Quote:
Originally Posted by marioh
Is there a way for A to find out B's return code?
Is there a way for A to find out when B ends?
Hi, there !
For the first question, I'm not sure... probably if you start it from a shell script or if you start it manualy, you can check the $? variable ( echo $? ).
For the second question, if A is a script shell or something like this, you can try this : ps aux | grep B_daemon_name. After this, like on the first question, check the $? variable. If it's value is 0, then everything is ok. If the value is 1 or something else, there was an error or your daemon is death Smilie
I hope this helped.
Good luck !
 

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ATF-SH(1)						    BSD General Commands Manual 						 ATF-SH(1)

NAME
atf-sh [-s shell] -- interpreter for shell-based test programs SYNOPSIS
atf-sh script DESCRIPTION
atf-sh is an interpreter that runs the test program given in script after loading the atf-sh(3) library. atf-sh is not a real interpreter though: it is just a wrapper around the system-wide shell defined by ATF_SHELL. atf-sh executes the inter- preter, loads the atf-sh(3) library and then runs the script. You must consider atf-sh to be a POSIX shell by default and thus should not use any non-standard extensions. The following options are available: -s shell Specifies the shell to use instead of the value provided by ATF_SHELL. ENVIRONMENT
ATF_LIBEXECDIR Overrides the builtin directory where atf-sh is located. Should not be overridden other than for testing purposes. ATF_PKGDATADIR Overrides the builtin directory where libatf-sh.subr is located. Should not be overridden other than for testing purposes. ATF_SHELL Path to the system shell to be used in the generated scripts. Scripts must not rely on this variable being set to select a specific interpreter. EXAMPLES
Scripts using atf-sh(3) should start with: #! /usr/bin/env atf-sh Alternatively, if you want to explicitly choose a shell interpreter, you cannot rely on env(1) to find atf-sh. Instead, you have to hardcode the path to atf-sh in the script and then use the -s option afterwards as a single parameter: #! /path/to/bin/atf-sh -s/bin/bash ENVIRONMENT
ATF_SHELL Path to the system shell to be used in the generated scripts. SEE ALSO
atf-sh(3) BSD
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