Sponsored Content
Top Forums UNIX for Dummies Questions & Answers difference between source, exec and ./script Post 1679 by 98_1LE on Friday 23rd of March 2001 09:18:52 AM
Old 03-23-2001
What is the difference between sourcing a script, running it or execing it?
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Difference between xargs and exec

Hi, I have tried both the options in small dummy scripts, but somehow i can't differentiate between the two. find . -name H* -exec ls -l {} \; find . -name H* | xargs ls -l Both work the ditto way. Any help is appreciated. (19 Replies)
Discussion started by: vibhor_agarwali
19 Replies

2. Shell Programming and Scripting

using -exec in a script

I am using a third party job management program called Autosys. the command to load a jil into the autosys database is jil < somefilename.jil I have a directory and it in are a lot of jils. rather than type jil < somefilename.jil for every file I would like to script something do do it. if cd... (2 Replies)
Discussion started by: jayjabour
2 Replies

3. Shell Programming and Scripting

bash shell: 'exec', 'eval', 'source' - looking for help to understand

Hi, experts. Whould anybody clear explay me difference and usage of these 3 commands (particulary in bash) : exec eval source I've tryed to read the manual pages but did not get much. Also could not get something useful from Google search - just so much and so not exactly, that is... (3 Replies)
Discussion started by: alex_5161
3 Replies

4. Shell Programming and Scripting

-exec cmd in ksh script

Hi, I discovered the following single-line script works very well to cp a large number of files from a source directory to a destination directory while avoiding the "argument list too large" error: # cpmany - copy large number of files # Takes two parameters - source dir, destination dir... (14 Replies)
Discussion started by: Tanuka
14 Replies

5. Shell Programming and Scripting

exec script error

Hi, Gurus, my script code as following: #!/usr/bin/sh mkdir dir1 result=`echo $?` if ; then echo "completed" else echo "wrong" fi When I execute it with command sh filename. , it executed successfully. but, when I execute it with command . filename it throw out error: -bash:ELF :... (2 Replies)
Discussion started by: ken002
2 Replies

6. Programming

difference bewteen pipe, xargs, and exec

I have read several docs on these on the web and looked at examples. I can't figure out the difference. In some cases you use one or the other or you combine them. can someone help me understand this? (1 Reply)
Discussion started by: guessingo
1 Replies

7. 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

8. Shell Programming and Scripting

Difference b/w xargs and "-exec" in Find

Hi, What is the difference between the following commands find . -type f -exec grep 'abc' {} \; and find . -type f | xargs grep 'abc' Appreciate your help. (2 Replies)
Discussion started by: bobbygsk
2 Replies

9. Shell Programming and Scripting

Use of exec command in a script

Guru's, I want to make a use of "exec" command in my script and want to check return code of executing script, but as you know exec command will terminate current processID and comeout and will trigger new one, i am unable to check return code of script and not able to run a scrpit after exec. ... (2 Replies)
Discussion started by: pawar.atul28
2 Replies

10. Shell Programming and Scripting

Difference: 'source file.sh' or './file.sh'

Dear all, I would like to know the difference in executing the shell script both ways? a.) source file.sh b.) ./file.sh I need to initialize some setup which is part of the file.sh. I realized that when I do the source file.sh the setup is all initlaized well. However, with the ./file.sh... (3 Replies)
Discussion started by: emily
3 Replies
SYSLOGOUT(8)						      System Manager's Manual						      SYSLOGOUT(8)

NAME
syslogout - modular centralized shell logout mechanism DESCRIPTION
syslogout is a generic approach to enable centralized shell logout actions for all users of a given system in a modular and centralized way mostly aimed at avoiding work for lazy sysadmins. It has only been tested to work with the bash shell. It basically consists of the small /etc/syslogout shell script which invokes other small shell scripts having a .bash suffix which are con- tained in the /etc/syslogout.d/ directory. The system administrator can drop in any script he wants without any naming convention other than that the scripts need to have a .bash suffix to enable automagic sourcing by the /etc/syslogout script. For shell sessions, the contents of /etc/syslogout.d/" will be sourced by every user at logout if the following lines are present in his $HOME/.bash_logout: if [ -f /etc/syslogout ]; then . /etc/syslogout fi If used for X sessions it is advisable to include the former statement into the Xreset script of the X display manager instead to prevent that closing of an terminal emulator window yields unexpected results in your running X session if your X11 terminal emulator is using a login shell. Be sure then to run it under the user-id of the X session's user. See the example files in /usr/share/doc/syslogout/ for illustration. Users not wanting /etc/syslogout to be sourced for their environment can easily disable it's automatic mechanism. It can be disabled by simply creating an empty file called $HOME/.nosyslogout in the user's home directory using e.g. the touch(1) command. Any single configuration file in /etc/syslogout.d/ can simply be overridden by any user by creating a private $HOME/.syslogout.d/ directory which may contain a user's own version of any configuration file to be sourced instead of the system default. It's names have just to match exactly the system's default /etc/syslogout.d/ configuration files. Empty versions of these files contained in the $HOME/.syslo- gout.d/ directory automatically disable sourcing of the system wide version. Naturally, users can add and include their own private scripts to be automagically executed by /etc/syslogout at logout time. OPTIONS
There are no options other than those dictated by shell conventions. Anything is defined within the configuration scripts themselves. SEE ALSO
The README files and configuration examples contained in /usr/share/doc/syslogout/ and the manual page for bash(1), xdm(1x), xdm.options(5), and wdm(1x). Recommended further reading is everything related with shell programming. If you need a similar mechanism for executing code at login time check out the related package sysprofile(8) which is a very close compan- ion to syslogout. BUGS
syslogout in its current form is mainly restricted to bash(1) syntax. In fact it is actually a rather embarrassing quick and dirty hack than anything else - but it works. It serves the practical need to enable a centralized bash configuration until something better becomes available. Your constructive criticism in making this into something better" is very welcome. Before i forget to mention it: we take patches... ;-) AUTHOR
syslogout was developed by Paul Seelig <pseelig@debian.org> specifically for the Debian GNU/Linux system. Feel free to port it to and use it anywhere else under the conditions of either the GNU public license or the BSD license or both. Better yet, please help to make it into something more worthwhile than it currently is. SYSLOGOUT(8)
All times are GMT -4. The time now is 03:00 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy