I would like to assign the output of stdout to a variable and that of stderr to another one, and this without using temporary files/named pipes.
I agree with Corona688, cannot be done without pipes. However, you said 'named pipes' which technically are different beasts so I offer this "mess" for you to consider.
It all can be crammed on one line; I've formatted it to be easier to read. It makes the assumption that the tilde (~) is never found in either the stdout or stderr stream. The records of each output stream are separated with semicolons, so if the output contains them, things will be difficult.
Running the script in my small test environment produced:
I tested this in Kshell; I don't think it will work under bash as bash has issues executing a command and reading the output into variables. It will also be subject to the limits that Kshell might impose on variable value lengths or that awk might impose on string lengths. If you have a command that produces rather long output/error you could have problems.
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)
#!/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)
Hi friends
I am facing one problem while redirecting the out of the stderr and stdout to a file
let example my problem with a simple example
I have a file (say test.sh)in which i run 2 command in the background
ps -ef &
ls &
and now i am run this file and redirect the output to a file... (8 Replies)
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)
working on a c sell script
I think I understand the concept of it, which is:
filename >> file.txt (to appaend)
or filename | tee -a file.txt (to append)
The problem is that my shell script is used with several parameters, and these commands don't seem to work with just filename. They... (2 Replies)
I have an executable that, depending on its input, outputs to either one file or several. It usually prints nothing on screen. The usual way to call this program is to specify an input and output filenames, like this:
./executable.exe -i inputfile -o outputfileIt will then try to use the output... (1 Reply)
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)
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)
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)
Well.. let's say i need to write a pretty simple script.
In my script i have 2 variables which can have value of 0 or 1.
$VERBOSE
$LOG
I need to implement these cases:
($VERBOSE = 0 && $LOG = 0) => ONLY ERROR output (STDERR to console && STDOUT to /dev/null)
($VERBOSE = 1... (5 Replies)
Discussion started by: Marmz
5 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)