error situation handling when starting app from a script
Hi,
in my bash script I start 3rd party app that runs quickly normally and returns some data that I use later for processing. However if there are problems the app doesn't return anything and just hangs... then my script also hangs of course, awaiting for the app to comeback. Was wondering how to avoid that so the script could carry on or at least bailout with an error if that happens. Is there a way to do it in bash ?
Code:
get_proc_stats() {
port=$1
tstats=`app $port`
}
I was thinking maybe I could start/fork seperate process in background which would then check the main process somehow, maybe sending a signal USR1 and then the main process would be maybe writing something to some temp. file and forked process runnig in background would be checking if update to temp. file happend, if not then it could wait some time and kill the main process ?
What do you think?
Any hints on that appreciated,
Cheers,
Tomasz
Moderator's Comments:
Please use code tags next time for your code and data.
Last edited by zaxxon; 09-05-2012 at 10:54 AM..
Reason: code tags
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LEARN ABOUT OSF1
tntnet-config
TNTNET-CONFIG(1) General Commands Manual TNTNET-CONFIG(1)NAME
tntnet-config - output compiler flags for tntnet usage
SYNOPSIS
tntnet-config [--libs] [--cxxflags] [--config[=app]] [--makefile[=app]] [--project=app] [--autoproject=app] [--help] [--version]
DESCRIPTION
This manual page documents briefly the tntnet-config command.
OPTIONS
This program's options start with two dashes (`-'). A summary of options is included below.
--libs Output linker flags.
--cxxflags
Output C++ preprocessor and compiler flags.
--config[=app]
Print default configuration file.
--makefile[=app]
Print a simple makefile for an ecpp project.
--project=app
Create a simple ecpp project directory.
--autoproject=app
Create a autotools based ecpp project.
--help Show summary of options.
--version
Show version of program.
AUTHOR
tntnet was written by Tommi Makitalo <tommi@tntnet.org>.
This manual page was written by Kari Pahula <kaol@debian.org>, for the Debian project (but may be used by others).
SEE ALSO tntnet(8), ecppc(1), ecppl(1), ecppll(1).
More documentation can be found in /usr/share/doc/tntnet-doc/.
July 3, 2006 TNTNET-CONFIG(1)
09-05-2012
