Have each subshell write stderr and stdout to its own logfile
Hello,
As stated in the title, I do some hacked parallel processing by running multiple instances of bash scripts, each in their own subshell. The code looks like this,
Despite the use of sleep to try and space things out, when I am working on these scripts I am writing allot of output and there is no way to keep the output from getting muddled when it is all going to one terminal.
I can generally work on just one instance if I need to, but it would also be nice to have each script report to its own log file so I can see which instance errors are associated with.
Is there a reasonable way to do this that someone can suggest?
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)
Hello
Before I get to my question let me explain the situation. I am writing a ksh script to startup several instances of an application. That is done by executing another ksh script (let's call it startApp) with some arguments. Now, startApp writes some information to stdout that I don't want... (3 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)
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)
Hi,
I would like to avoid re-directing line by line to a file.
What is the best way to re-direct STDOUT to a file in a subshell?
Thanks in advance.
Cheers
Vj (1 Reply)
Hello
I read a lot of post related to this topic, but nothing helped me. :mad:
I'm running a ksh script with subshell what processing some ldap command. I need to check output for possible errors.
#!/bin/ksh
...
readinput < $QCHAT_INPUT |&
while read -p line
do
echo $line
... (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)
Hi,
I got a process (c written) that we usually run this way :
EmsChkQu >> /EMS/log/EmsChkQu.log 2>&1
When trying to use it as a service I defined it this way :
<?xml version='1.0'?>
<!DOCTYPE service_bundle SYSTEM '/usr/share/lib/xml/dtd/service_bundle.dtd.1'>
<service_bundle... (6 Replies)
(Apologies for any typos.)
OSX 10.12.3 AND Windows 10.
This is for the serious Python experts on at least 3.5.x and above...
In script format sys.stdout.write() AND sys.stderr.write() seems to work correctly.
Have I found a serious bug in the interactive sys.stdout.write() AND... (2 Replies)