Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Exec command - what is it doing here?
Top Forums Shell Programming and Scripting Exec command - what is it doing here? Post 302806433 by alister on Monday 13th of May 2013 04:56:24 AM
Old 05-13-2013
Quote:
Originally Posted by el_foz
If I wanted to cancel this behaviour later in the script, how would I do that?
Code:
exec 1>nul 2>nul

Depends what you mean by cancel.

If you simply want to discard output and error messages so that they cease to appear in the logs, you can redirect to /dev/null (although this will not affect any commands that are already logging and running).

If instead you would like to revert output and errors to their original destinations, you'll have to use exec to save the original locations.

The very last example at Advanced Bash-Scripting Guide: I/O Redirection demonstrates how to do this with standard output.

Regards,
Alister
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

using the -exec command

linux redhat 8.0 I am getting accustomed to using the -exec command to get around my databse.. and use it to edit and update files..! is this more apllicable than jumping from one directory to the other.. I have set up the databse so that the inode #'s are accessable and can get me from one... (0 Replies)
Discussion started by: moxxx68
0 Replies

2. Shell Programming and Scripting

exec command

hai i want know the difference between two shell scripts those are 1) a=2004 echo $a #output------2004 exec < inputfile while read line do echo $a #output-------2004 a=2005 echo $line echo $a ... (1 Reply)
Discussion started by: g_s_r_c
1 Replies

3. UNIX for Dummies Questions & Answers

Need help with -exec cp command.

I have a ksh script that contains the following: find /dir1/dir2 -type f -name "FILE.*" -newer /dir1/dir2/afterme.txt -exec cp /dir1/dir2/dir3 {} \; When I run it from the cli, it runs fine. When I run it from the ksh script I get find: missing argument to `-exec' I also tried -exec cp... (40 Replies)
Discussion started by: bbbngowc
40 Replies

4. Shell Programming and Scripting

exec command

can any one pls explain the meaning of exec 1<&5 ?? its urgent (2 Replies)
Discussion started by: santosh1234
2 Replies

5. Shell Programming and Scripting

exec command help

All, I am using below shell script to output the content to outputfile.txt. What I am looking for is in addition to outputfile.txt, I want the output to be on standard output too. exec > outputfile.txt echo "Starting " echo "ending" (5 Replies)
Discussion started by: basic_shell
5 Replies

6. Shell Programming and Scripting

exec command

How can I use the exec command to log my korn shell session to the screen and the log file? Currently I have this command: $exec 1> ${LOG} 2>&1 This logs the output to the log file only. I want it to go to the screen also. Is this possible with this command? thanks. (10 Replies)
Discussion started by: djehresmann
10 Replies

7. UNIX for Dummies Questions & Answers

Exec command

Hi can some one explain the following command , It would really help if some can really elloborate on what is happening out here export PATH | exec /bin/sh ./auto_approve :q P.S: This is the first time i am using exec ,so an elloboration what does it do and what is the use of the :q will be... (1 Reply)
Discussion started by: Sri3001
1 Replies

8. Shell Programming and Scripting

exec command help

Hi, I have the following lines in a script : . . exec < some_file . . . I have very little idea about exec command. I would like to know what this does and what will happen if the file some_file does not exist. Specifically, I would like to know whether the lines following this... (5 Replies)
Discussion started by: elixir_sinari
5 Replies

9. Shell Programming and Scripting

Script Variables Inquiry, Values Okay in Standalone Exec, No-Show in Cron Exec

I have the following bash script lines in a file named test.sh. #!/bin/bash # # Write Date to cron.log # echo "Begin SSI Load $(date +%d%b%y_%T)" # # Get the latest rates file for processing. # d=$(ls -tr /rms/data/ssi | grep -v "processed" | tail -n 1) filename=$d export filename... (3 Replies)
Discussion started by: ginowms
3 Replies

10. Shell Programming and Scripting

Linux find command seems to not transmit all the result to the '-exec command'

Hello. From a script, a command for a test is use : find /home/user_install -maxdepth 1 -type f -newer /tmp/000_skel_file_deb ! -newer /tmp/000_skel_file_end -name '.bashrc' -o -name '.profile' -o -name '.gtkrc-2.0' -o -name '.i18n' -o -name '.inputrc' Tha command... (3 Replies)
Discussion started by: jcdole
3 Replies

LEARN ABOUT CENTOS

doveadm-exec

DOVEADM-EXEC(1) 						      Dovecot							   DOVEADM-EXEC(1)

NAME

       doveadm-exec - easily execute commands from Dovecot's libexec_dir

SYNOPSIS

       doveadm [-Dv] exec binary [binary arguments]

DESCRIPTION

       This  command  allows administrators and local users to simply execute commands from within libexec_dir.  So for example a logged in system
       user could start a pre-authenticated imap session, using the command: doveadm exec imap.  An administrator would use the  command:  doveadm
       exec imap -u username.

OPTIONS

       Global doveadm(1) options:

       -D     Enables verbosity and debug messages.

       -v     Enables verbosity, including progress counter.

ARGUMENTS

       binary the name of an executable located in /usr/libexec/dovecot.

       binary arguments
	      options and arguments, wich will be passed through to the binary.

EXAMPLE

       This example demonstrates how to deliver a message from a file to a user's mailbox.

       doveadm exec dovecot-lda -d user@example.net 
       -f admin@example.net < ~/stuff/welcome.msg

REPORTING BUGS

       Report  bugs,  including doveconf -n output, to the Dovecot Mailing List <dovecot@dovecot.org>.	Information about reporting bugs is avail-
       able at: http://dovecot.org/bugreport.html

SEE ALSO

       doveadm(1), dovecot-lda(1)

Dovecot v2.2							    2013-08-05							   DOVEADM-EXEC(1)
All times are GMT -4. The time now is 02:18 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy