Redirect STDOUT & STDERR to file and then on screen Post: 303023926

Login or Register to Ask a Question and Join Our Community

Sponsored Content

Top Forums Shell Programming and Scripting Redirect STDOUT & STDERR to file and then on screen Post 303023926 by vgersh99 on Tuesday 25th of September 2018 04:26:52 PM

Old

09-25-2018

Moderator

I usually use this paradigm at the top of a script:

Code:

# Redirect the stdout/stderr to screen AND log file

mkfifo /tmp/$$-err /tmp/$$-out
# to merge stdout/stderr to log file AND screen
( exec tee -a ${FILE_LOG} </tmp/$$-out ) &
( exec tee -a ${FILE_LOG} </tmp/$$-err >&2 ) &

exec 1>/tmp/$$-out
exec 2>/tmp/$$-err
rm -f /tmp/$$-out /tmp/$$-err

Last edited by vgersh99; 09-25-2018 at 05:58 PM..

This User Gave Thanks to vgersh99 For This Post:

vgersh99

View Public Profile for vgersh99

Find all posts by vgersh99

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Redirect stdout and stderr

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

2. Shell Programming and Scripting

stderr & stdout to a file and the right exit code

Hi all, I need to redirect stdout and stderr to a file in a ksh shell. That's not a problem. But I need also the correct exit code for the executed command. In the example below I redirect correctly the stdout & stderr to a file, but I have the exit code of tee command and not for the mv...

3. Shell Programming and Scripting

Redirecting STDERR message to STDOUT & file at same time

Friends I have to redirect STDERR messages both to screen and also capture the same in a file. 2 > &1 | tee file works but it also displays the non error messages to file, while i only need error messages. Can anyone help??

4. Shell Programming and Scripting

How to redirect stderr and stdout to a file

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...

5. Shell Programming and Scripting

Redirect stdout/stderr to a file globally

Hi I am not if this is possible: is it possible in bach (or another shell) to redirect GLOBALLY the stdout/stderr channels to a file. So, if I have a script script.sh cmd1 cmd2 cmd3 I want all stdout/stderr goes to a file. I know I can do: ./script.sh 1>file 2>&1 OR ...

6. Red Hat

Redirect STDOUT and STDERR of chsh

EDIT: Nevermind, figured it out! Forgot to put backslashes in my perl script to not process literals! Hi everyone. I am trying to have this command pass silently. (no output) chsh -s /bin/sh news Currently it outputs. I've tried.... &> /dev/null 1> /dev/null 2>&1 /dev/null 1>&2...

7. Shell Programming and Scripting

redirect stdout and stderr to file wrong order problem with subshell

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 ...

8. Shell Programming and Scripting

Prepend TimeStamp to STDERR & STDOUT to a file

Currently I am redirecting STDERR and STDOUT to a log file by doing the following { My KSH script contents } 2>&1 | $DEBUGLOG Problem is the STDERR & STDOUT do not have any date/time associated. I want this to be something that i can embed into a script opposed to an argument I use...

9. Shell Programming and Scripting

Redirect STDOUT & STDERR to file and then on screen

Dear all, redirecting STDOUT & STDERR to file is quite simple, I'm currently using: exec 1>>/tmp/tmp.log; exec 2>>/tmp/tmp.logBut during script execution I would like the output come back again to screen, how to do that? Thanks Lucas

10. Shell Programming and Scripting

Redirecting STDERR to file and screen, STDOUT only to file

I have to redirect STDERR messages both to screen and also capture the same in a file but STDOUT only to the same file. I have searched in this formum for a solution, but something like srcipt 3>&1 >&2 2>&3 3>&- | tee errs doesn't work for me... Has anyone an idea???

LEARN ABOUT OSX

git-merge-file

GIT-MERGE-FILE(1)						    Git Manual							 GIT-MERGE-FILE(1)

NAME

       git-merge-file - Run a three-way file merge

SYNOPSIS

       git merge-file [-L <current-name> [-L <base-name> [-L <other-name>]]]
	       [--ours|--theirs|--union] [-p|--stdout] [-q|--quiet] [--marker-size=<n>]
	       [--[no-]diff3] <current-file> <base-file> <other-file>

DESCRIPTION

       git merge-file incorporates all changes that lead from the <base-file> to <other-file> into <current-file>. The result ordinarily goes into
       <current-file>. git merge-file is useful for combining separate changes to an original. Suppose <base-file> is the original, and both
       <current-file> and <other-file> are modifications of <base-file>, then git merge-file combines both changes.

       A conflict occurs if both <current-file> and <other-file> have changes in a common segment of lines. If a conflict is found, git merge-file
       normally outputs a warning and brackets the conflict with lines containing <<<<<<< and >>>>>>> markers. A typical conflict will look like
       this:

	   <<<<<<< A
	   lines in file A
	   =======
	   lines in file B
	   >>>>>>> B

       If there are conflicts, the user should edit the result and delete one of the alternatives. When --ours, --theirs, or --union option is in
       effect, however, these conflicts are resolved favouring lines from <current-file>, lines from <other-file>, or lines from both
       respectively. The length of the conflict markers can be given with the --marker-size option.

       The exit value of this program is negative on error, and the number of conflicts otherwise (truncated to 127 if there are more than that
       many conflicts). If the merge was clean, the exit value is 0.

       git merge-file is designed to be a minimal clone of RCS merge; that is, it implements all of RCS merge's functionality which is needed by
       git(1).

OPTIONS

       -L <label>
	   This option may be given up to three times, and specifies labels to be used in place of the corresponding file names in conflict
	   reports. That is, git merge-file -L x -L y -L z a b c generates output that looks like it came from files x, y and z instead of from
	   files a, b and c.

       -p
	   Send results to standard output instead of overwriting <current-file>.

       -q
	   Quiet; do not warn about conflicts.

       --diff3
	   Show conflicts in "diff3" style.

       --ours, --theirs, --union
	   Instead of leaving conflicts in the file, resolve conflicts favouring our (or their or both) side of the lines.

EXAMPLES

       git merge-file README.my README README.upstream
	   combines the changes of README.my and README.upstream since README, tries to merge them and writes the result into README.my.

       git merge-file -L a -L b -L c tmp/a123 tmp/b234 tmp/c345
	   merges tmp/a123 and tmp/c345 with the base tmp/b234, but uses labels a and c instead of tmp/a123 and tmp/c345.

GIT

       Part of the git(1) suite

Git 2.17.1							    10/05/2018							 GIT-MERGE-FILE(1)