Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: How to redirect stderr and stdout to a file
Top Forums Shell Programming and Scripting How to redirect stderr and stdout to a file Post 302229862 by sushantnirwan on Thursday 28th of August 2008 05:24:29 AM
Old 08-28-2008
Question 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 (say output.log)
./test.sh > output.log

Now the result stored in the file is not like that first ps -ef and than ls
it mixed the output of both command

Now help me so thats i can store the result in the file only one after another

Thanks
 

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 (8 Replies)
Discussion started by: zcurtis
8 Replies

2. UNIX for Dummies Questions & Answers

redirect stderr and/or stdout to /dev/null from command line

Is it possible to redirect errors at the command line when you run the script such as bash scriptname & 2>/dev/null? (1 Reply)
Discussion started by: knc9233
1 Replies

3. Shell Programming and Scripting

sending stdout and stderr to a file

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)
Discussion started by: mistermojo
2 Replies

4. 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 ... (2 Replies)
Discussion started by: islegmar
2 Replies

5. 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... (1 Reply)
Discussion started by: austinharris43
1 Replies

6. 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 ... (3 Replies)
Discussion started by: Osim
3 Replies

7. Programming

stderr stdout to a log file

I originally wrote my script using the korn shell and had to port it to bash on a another server. My script is working find for backing up but noticed that now after the move, I am not getting any output to my log files. Using Korn shell, this worked for me for some odd reason. This was sending... (2 Replies)
Discussion started by: metallica1973
2 Replies

8. Shell Programming and Scripting

Redirect stdout/stderr, except e.g. "STRING"

Hi, I'm running a program (Python) whose output I would like to redirect to a log. But the program calls a library (that I cannot change), which outputs all sorts of useless information. I would like to redirect all output from my Python program into this log, except output that matches the... (7 Replies)
Discussion started by: rswindle
7 Replies

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 (4 Replies)
Discussion started by: Lord Spectre
4 Replies

10. 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: 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 Luc edit by bakunin: please use CODE-tags like the... (6 Replies)
Discussion started by: tmonk1
6 Replies

LEARN ABOUT OSF1

fsx

fsx(8)							      System Manager's Manual							    fsx(8)

NAME

       fsx - file system exerciser

SYNOPSIS

       /usr/field/fsx [-h] [-ofile] [-tn] [-fpath] [-pm]

OPTIONS

       The  fsx  options  are: Prints the help messages for the fsx command.  Saves the output diagnostics in file.  Run time in minutes (n).  The
       default is to run until the process receives a Ctrl/C or a kill -15 pid command.  Number (m) of fsx processes to spawn. The maximum is 250;
       the default is 20.  Path name of directory on file system you wish to test. For example, /mnt or /usr. The default is /usr/field.

DESCRIPTION

       The  fsx  exerciser spawns the background process fsxr, and these two processes exercise a file system by creating, opening, writing, open-
       ing, reading, validating, closing, and unlinking a test file.  These test files are created  in	the  /usr/field  directory  (the  default)
       unless the -fpath option is used.

       You  can spawn up to 250 (default is 20) fsx processes (fsxr1, fsxr2, ...  fsxrn where n is the number of processes spawned). The exerciser
       will run until a Ctrl/C or kill -15 pid command is sent to the process.

       A logfile for you to examine and then remove is created in the current working directory. If there are errors in the logfile, make sure you
       check the syslog file where the driver and kernel error messages are saved.

RESTRICTIONS

       If  you	must run a system exerciser over an NFS link or on a diskless system, there are some restrictions.  For exercisers such as fsx(8),
       which must write into a file system, the target file system must be writable by root. Also, the directory in which any  of  the	exercisers
       are  executed must be writable by root because temporary files are written into the current directory.  These latter restrictions are some-
       times difficult to overcome because often NFS file systems are mounted in a way that prevents root from writing into  them.   Some  of  the
       restrictions may be overcome by copying fsx and fsxr to another directory and then executing it.  Avoid using the fsx exerciser over an NFS
       or diskless file system.

       Each time you run fsx, it creates a log file.  The exerciser allows you to accumulate up to 9 log files.  If you run fsx to create a  tenth
       log file, it exits and displays the following error messages:

       fsx: Remove old log files fsx: Can not start report generator, test aborted

       When this situation occurs, remove at least one log file and run fsx again.

EXAMPLES

       The  following  example	runs  10  fsx processes on /mnt until the process receives a Ctrl/C or kill -15 pid command: % /usr/field/fsx -p10
       -f/mnt The following example runs 20 fsx processes on /usr/field for 120 minutes in the background: % /usr/field/fsx -t120 &

SEE ALSO

       Commands: cmx(8), diskx(8), memx(8), shmx(8), tapex(8)

																	    fsx(8)
All times are GMT -4. The time now is 12:41 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy