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[BASH] Redirect stdout and stderr to files plus date at each line

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http://chakra-project.org – Hi,I know this is not a bash place but I know there is some dev here so...I want to redirect sdtout and stderr to two different logs files with this way : exec 1>$LOG exec 2>$ERROR_LOGIt works. But it's too basic, I want date and time at each lines. With something like that :09/08/2012-01:4624 hours formatI'm supposing I'll use something like that :date +%d\%m\%Y-%0k\:%MI've searched on Google but I've not found my happiness. I think the problem is how to redirect date command to each line written to logs files.Someone can guide me to the good way please ?Cordial (HowTos)

Shoutmeloud's picture
Submitted by Shoutmeloud on 09/07/2012

Stories similar to [BASH] Redirect stdout and stderr to files plus date at each line

I am using daemontools to monitor a process and its output log. I am using multilog to write the logs to disk.

The run script for the log is:

#!/bin/bash PATH=/usr/local/bin:/usr/bin:/bin cd /usr/local/script_dir exec multilog t s16777215 n50 '!tai64nlocal' '!/bin/gzip' /var/log/script_log

The process being monitored, also writes output to stderr.

i have a log file that has the date and time that looks like this:

Code: Wed Jun 28 15:46:21 2012 test failed tailed passed passed not error panic

what we want to focus on is the first 5 columns because they contain the date and time.

the date and time can be anywhere on the line. in this particular case, the date and time is at the beginning of the line.

Is there a way in Windows 7 cmd shell to redirect the stderr to stdout while keeping the stderr stream intact?

For example, I have a program that outputs to stderr and stdout the following message

TO STDOUT TO STDERR

I want to have two files stderr.txt and stdout.txt with the following content

stderr.txt TO STDERR

stdout.txt TO STDOUT TO STDERR

Is this possible?

hi all,

i have written the following script that does this work: 1. copy large logs files from one server to another. 2. then unzip this files and extraxt from these large https logs only those fields that are neccesary. 3.

I have this simple script which redirects the output and append it to a file.

filename="/home/ronnie/tmp/hello"

date=$(date) echo "$date" >> $filename

Now, lets suppose I change date=$(date) to date= $(date) which will generate an error.

I've been running a script for several days now. I redirected stdout to $HOME/mylog, but didn't redirect stderr since I thought there would be nothing on it. Suddenly thousands of lines started coming out on stderr, so I suspended the job.

Dear all, redirecting STDOUT & STDERR to file is quite simple, I'm currently using:

Code: exec 1>>/tmp/tmp.log; exec 2>>/tmp/tmp.log But during script execution I would like the output come back again to screen, how to do that?

Thanks Lucas

filter file for specific date 41 weeks 6 days ago

My OS is Solaris 10 (64 bit) and I have many files in a logs directory where we receive 40-50 logs every day.

I know how to redirect output and how to suppress them in bash. Now, suppose I accidentally forgot to append the output redirection part to the command (e.g. 2>&1 or > /tmp/mystdout) and my background process is already running for a while, can I still change to where stdout and stderr are being written to?