Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Not able to understand use exec command
Top Forums Shell Programming and Scripting Not able to understand use exec command Post 302762189 by tokiwinter on Monday 28th of January 2013 08:09:58 AM
Old 01-28-2013
That is expected.

Code:
$ exec 1>>ex

You are redirecting (and appending) STDOUT to file ex - hence STDOUT is no longer "connected" to your terminal.
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Can't understand sar command

HI Experts, Can anyone pls help me to understand this.. >sar 20:05:00 1 2 1 96 20:10:00 2 2 10 87 20:15:00 1 2 19 78 20:20:00 1 2 14 83 20:25:00 1 2 16 81 20:30:00 1 ... (1 Reply)
Discussion started by: shaan_dmp
1 Replies

2. UNIX for Dummies Questions & Answers

Just a quickie to help me understand this command:

Hi. Im working in AIX. Oracle 9.2. In one of the backup scripts, I see this: sysback -f'/dev/rmt0' '-T chrp' '-k mp' -w '/tmpback' 'oradata_vg oraindx_vg ora misc_vg' The line here, as I know, specifies the device name, the temp file, and the volume groups. My query regards theses two: '-T... (2 Replies)
Discussion started by: Incremental
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. HP-UX

Need help to understand chatr command

Hi, I am trying to find the max memory utilization of a binary file using chatr command. i gave chatr <file name>. But no where i could see the max memory usage of the file. How do you i check the memory usage of this binary file. Upto my knowledge it should be 1.75GB in HP-UX. But the does... (1 Reply)
Discussion started by: kprasanna_79
1 Replies

5. Programming

help me understand exec() family of calls...

how does exec() do it? on successful call of exec() family of functions, they never return... how to i emulate that. assume the standard example, execl("/bin/ls","ls",NULL); now this would never return. i m trying to emulate exec()'s never to return feature... #include<unistd.h>... (4 Replies)
Discussion started by: c_d
4 Replies

6. Shell Programming and Scripting

Sed command - help me understand

Hello, can someone please explain me what the following commands do.. i know the output but i would like to understand the break down of what they do step by step. 1) sed -n "/ $(date +\%R -d "-1 min")/,$"p req.txt| wc -l 2) awk '/19:00/,/22:00/' app.log |grep "mytesturl"|grep... (2 Replies)
Discussion started by: niks
2 Replies

7. Shell Programming and Scripting

Need to understand the output of last command

root@desktop:~# last reboot | head -1 reboot system boot 2.6.31-17-generi Tue Jan 26 12:05 - 13:52 (01:46) What does the last two fields(12:05 - 13:52 (01:46)) of the output mean? (2 Replies)
Discussion started by: proactiveaditya
2 Replies

8. UNIX for Dummies Questions & Answers

Not able to understand the output of w command

I have taken putty session of a server from two separate machines namely HOST1(3 sessions) and HOST2(1 Session) . However w command says there are 5 users Confused over the output any clue will be appreciated. # w 09:29:36 up 34 days, 15:48, 5 users, load average: 0.62, 4.33, 8.16 USER ... (3 Replies)
Discussion started by: pinga123
3 Replies

9. Shell Programming and Scripting

Help to understand the command

Hi Gurus, I am new for Unix scripting. below command in one existing script. I am not able to fully understand. please help in below command, I am not able to understand what's {P=1} do thanks in advance awk 'NF==1{$3=$1;$1=L}P&&NF>=3{print $1,$3;L=$1}/^___/{P=1}' FILE (3 Replies)
Discussion started by: green_k
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

locale::codes::langfam

Locale::Codes::LangFam(3)				User Contributed Perl Documentation				 Locale::Codes::LangFam(3)

NAME

       Locale::Codes::LangFam - standard codes for language extension identification

SYNOPSIS

	  use Locale::Codes::LangFam;

	  $lext = code2langfam('apa');		       # $lext gets 'Apache languages'
	  $code = langfam2code('Apache languages');    # $code gets 'apa'

	  @codes   = all_langfam_codes();
	  @names   = all_langfam_names();

DESCRIPTION

       The "Locale::Codes::LangFam" module provides access to standard codes used for identifying language families, such as those as defined in
       ISO 639-5.

       Most of the routines take an optional additional argument which specifies the code set to use. If not specified, the default ISO 639-5
       language family codes will be used.

SUPPORTED CODE SETS

       There are several different code sets you can use for identifying language families. A code set may be specified using either a name, or a
       constant that is automatically exported by this module.

       For example, the two are equivalent:

	  $lext = code2langfam('apa','alpha');
	  $lext = code2langfam('apa',LOCALE_LANGFAM_ALPHA);

       The codesets currently supported are:

       alpha
	   This is the set of three-letter (lowercase) codes from ISO 639-5 such as 'apa' for Apache languages.

	   This is the default code set.

ROUTINES

       code2langfam ( CODE [,CODESET] )
       langfam2code ( NAME [,CODESET] )
       langfam_code2code ( CODE ,CODESET ,CODESET2 )
       all_langfam_codes ( [CODESET] )
       all_langfam_names ( [CODESET] )
       Locale::Codes::LangFam::rename_langfam  ( CODE ,NEW_NAME [,CODESET] )
       Locale::Codes::LangFam::add_langfam  ( CODE ,NAME [,CODESET] )
       Locale::Codes::LangFam::delete_langfam  ( CODE [,CODESET] )
       Locale::Codes::LangFam::add_langfam_alias  ( NAME ,NEW_NAME )
       Locale::Codes::LangFam::delete_langfam_alias  ( NAME )
       Locale::Codes::LangFam::rename_langfam_code  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::LangFam::add_langfam_code_alias  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::LangFam::delete_langfam_code_alias  ( CODE [,CODESET] )
	   These routines are all documented in the Locale::Codes::API man page.

SEE ALSO

       Locale::Codes
	   The Locale-Codes distribution.

       Locale::Codes::API
	   The list of functions supported by this module.

       http://www.loc.gov/standards/iso639-5/id.php
	   ISO 639-5 .

AUTHOR

       See Locale::Codes for full author history.

       Currently maintained by Sullivan Beck (sbeck@cpan.org).

COPYRIGHT

	  Copyright (c) 2011-2013 Sullivan Beck

       This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

perl v5.16.3							    2013-02-27						 Locale::Codes::LangFam(3)
All times are GMT -4. The time now is 10:47 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy