|
|
Sponsored Content
Operating Systems
Linux
Can background process access to stdout,stderr
Post 302340707 by katty on Tuesday 4th of August 2009 08:24:46 AM
08-04-2009
Can background process access to stdout,stderr
Hi folks 
Can deamonized process access to stderr, stdout?
I 'm trying to display error_num/return value of a function run() in stderr using
fprintf(stderr, "function run() returns = %d", ret_val);
run() is called after deamonizing the process.
Can deamonized process access to stderr, stdout?
I 'm trying to display error_num/return value of a function run() in stderr using
fprintf(stderr, "function run() returns = %d", ret_val);
run() is called after deamonizing the process.
|
|
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
How can I redirect and append stdout and stderr to a file when using cron? Here is my crontab file:
*/5 * * * * /dir/php /dir/process_fns.php >>& /dir/dump.txt
Cron gives me an 'unexpected character found in line' when trying to add my crontab file.
Regards,
Zach Curtis
POPULUS (8 Replies)
Discussion started by: zcurtis
8 Replies
2. Shell Programming and Scripting
We are running HP UNIX 11.0, and a patch applied 6 months ago. Ever since the patch, any scripts that run as script_name 1>&2 will write all the output to our /etc/cmcluster/package_name/package_cntl.log which is owned by root
(the permission of the log file is -rwxr----- root sys)
Does... (1 Reply)
Discussion started by: longyie904
1 Replies
3. Programming
Herez the question,
In a process which writes into file FILE1 with descriptor
fHandler1 and it is run as a background process
where would statements be directed
when stderr descriptor is used.
fprintf(stderr,"some message\n");
assume that session from which it is run is terminated and... (3 Replies)
Discussion started by: matrixmadhan
3 Replies
4. Shell Programming and Scripting
#!/usr/bin/perl
open(STDOUT, ">>$Textfile")
open(STDERR, ">>$Textfile")
print "program running\n";
$final = join("+", $initial,$final) #5
close (STDOUT);
close (STDERR);Hi all, above is my perl code. Notice i have captured the stdout and stderr to the same textfile. my code is expected to... (1 Reply)
Discussion started by: new2ss
1 Replies
5. Shell Programming and Scripting
Hello Friends,
sorry, i am not very familiar with Unix programming. Could you please help me on this?
We have to start different components from a startup script.
each components are started as below in the background in a startprocess function
$nohup $file $args >>$logFile 2>&1 &
... (0 Replies)
Discussion started by: alvinbush
0 Replies
6. Solaris
Hello Friends,
sorry, i am not very familiar with Unix programming. Could you please help me on this?
We have to start different components from a startup script.
each components are started as below in the background in a startprocess function
$nohup $file $args >>$logFile 2>&1 &
... (1 Reply)
Discussion started by: alvinbush
1 Replies
7. Shell Programming and Scripting
I have been doing this:
make xyz &> xyz.log &; tail -f xyz.log
The problem with this is that you never can ge sure when "make xyz" is done.
How can I pipe both stderr and stdout into tee so both stderr and stdout are copied both to the display and to the log file?
Thanks,
Siegfried (3 Replies)
Discussion started by: siegfried
3 Replies
8. Red Hat
Hi all. I am trying to use backticks in Perl to put STDERR into a string. The code is...
$readkey_test = `perl -MTerm::ReadKey -e 1`;
print $readkey_test;
if ($readkey_test =~ m/]/)
{
print "ReadKey not installed...\n";
}
else
{
print "ReadKey installed...\n";
}
If it comes up... (3 Replies)
Discussion started by: austinharris43
3 Replies
9. Shell Programming and Scripting
Can somebody explain to me why the diff output is not going to stderr?
Yet when I issue a diff from the command line the return code is -ne 1.
I am guessing diff always writes to stdout???
Is there away I can force the difff to write to stderr USING THE CURRENT
template. If possible, I... (5 Replies)
Discussion started by: BeefStu
5 Replies
10. Shell Programming and Scripting
Hi all,
can someone help me with the next redirection?
i want to redirect the stdout+stderr of a command to the same file (this i can do by prog &> file)
but in addition i want to redirect only the stderr to a different file.
how can i do this please? (in BASH)
thanks. (4 Replies)
Discussion started by: eee
4 Replies
LEARN ABOUT DEBIAN
ompi-iof
OMPI-IOF(1) Open MPI OMPI-IOF(1) NAME
ompi-iof, orte-iof - Displays a copy of the output streams from a process. NOTE: ompi-iof, and orte-iof are exact synonyms for each other. Using any of the names will result in exactly identical behavior. SYNOPSIS
ompi-iof [ options ] Options ompi-iof will display a copy of the indicated stdout, stderr, and/or stddiag streams from the designated process. -pid | --pid The pid of the mpirun executing the process whose streams are to be copied -stdout | --stdout Display a copy of the specified process' stdout. If no options are specified, this will act as the default -stderr | --stderr Display a copy of the specified process' stderr. -stddiag | --stddiag Display a copy of the specified process' stddiag. -rank | --rank The rank of the process whose output is to be copied. DESCRIPTION
ompi-iof displays a copy of the indicated stdout, stderr, and/or stddiag streams from the designated process. At this time, a ctrl-C must be used to terminate the program. The program will terminate cleanly, telling the associated mpirun to close the requested streams before exiting. SEE ALSO
orterun(1) 1.4.5 Feb 10, 2012 OMPI-IOF(1)