Sponsored Content
Full Discussion: ^$$ meaning
Top Forums Shell Programming and Scripting ^$$ meaning Post 302482300 by Pratik4891 on Tuesday 21st of December 2010 07:57:28 AM
Old 12-21-2010
^$$ meaning

Hi ,

Can anyone please let me know whta the follwoing piece of code for

Code:
ScriptName=${0##*/}
if pgrep -f "$ScriptName" | grep -v "^$$\$" ; then
  echo `date`": Sctipt $ScritName is already runnig"
  exit
fi

Thnx a lot in advance

Moderator's Comments:
Mod Comment
Please use code tags when posting data and code samples!

Last edited by vgersh99; 12-21-2010 at 09:01 AM.. Reason: code tags, please!
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

what is the meaning here?

#!/bin/sh $ORACLE_HOME/bin/sqlplus -S $orauserid/$orapasswd@$oradb << _TMP alter session set nls_date_format = 'YYYYMMDD HH24:MI'; set linesize 100 set pagesize 400 ok the above is part of a script..i just wanna know what does sqlplus -S means?? as in why we need to insert the -S behind? (2 Replies)
Discussion started by: forevercalz
2 Replies

2. AIX

meaning of ${0%${0##*/}}

. ${0%${0##*/}}Script_Name if i issue this command, it is executing the script. can any one tell what is the meaning of ${0%${0##*/}} (7 Replies)
Discussion started by: nyelavarthy
7 Replies

3. UNIX for Dummies Questions & Answers

Use and meaning of $*

Can someone explain the use and meaning of "$*" expression. (2 Replies)
Discussion started by: sinpeak
2 Replies

4. Linux

What are the meaning of these macros..

Masters, I am trying to learn the serial mouse driver for linux kernel. On the kernel source tree I find out these macros and I am unable to find out the meaning of these macros. Please anyone help me to understand these. These macros are defined in linux/serio.h... (2 Replies)
Discussion started by: iamjayanth
2 Replies

5. UNIX for Dummies Questions & Answers

what the meaning of #*

can some one please tell the meaning of the second statement i.e n=${m#*=} i couldnt get the meaning of the #*= 1.) m="mohit=/c/main/issue" echo $m result ----------- mohit=/c/main/issue 2.) n=${m#*=} echo $n RESULT ------- /c/main/issue (1 Reply)
Discussion started by: narang.mohit
1 Replies

6. Shell Programming and Scripting

What is the meaning of $_

Hi, Can somebody tell the usage of "$_" cd $_ ? and ls $_ ? (4 Replies)
Discussion started by: giri_luck
4 Replies

7. Shell Programming and Scripting

meaning of !*

can someone please tell what !* means in shell syntax. Regards, (3 Replies)
Discussion started by: busyboy
3 Replies

8. UNIX for Dummies Questions & Answers

meaning of <<!

Hi all, I wanna know the meaning of the last word "<<! " sudo su - user <<! please help on this !!!! (1 Reply)
Discussion started by: sudharson
1 Replies

9. Shell Programming and Scripting

Meaning

Please let me know the meaning for the below statements in shell scripting. 1) exit -99 -------------------------------- 2) set prgdir = `pwd` set runFlag = runFlag:FALSE ------------------------------------- 3) if (-f $prgdir/maillst.eml) then set distEmail = `cat $prgdir/maillst.eml`... (1 Reply)
Discussion started by: lg123
1 Replies

10. Shell Programming and Scripting

Meaning of $1^

Hello everyone, I'm looking for the meaning of this expression, as I don't understand it quite clearly : $1^ What do you think it could be? I thought either: - match lines starting with argument 1 but it should be ^$1 - turn line around : word becomes drow Thanks in advance for your... (4 Replies)
Discussion started by: bibelo
4 Replies
Graphics::Primitive::Insets(3pm)			User Contributed Perl Documentation			  Graphics::Primitive::Insets(3pm)

NAME
Graphics::Primitive::Insets - Space between things DESCRIPTION
Graphics::Primitive::Insets represents the amount of space that surrounds something. This object can be used to represent either padding or margins (in the CSS sense, one being inside the bounding box, the other being outside) SYNOPSIS
use Graphics::Primitive::Insets; my $insets = Graphics::Primitive::Insets->new({ top => 5, bottom => 5, left => 5, right => 5 }); METHODS
Constructor new Creates a new Graphics::Primitive::Insets. Instance Methods as_array Return these insets as an array in the form of top, right, bottom and left. bottom Set/Get the inset from the bottom. equal_to Determine if these Insets are equal to another. left Set/Get the inset from the left. right Set/Get the inset from the right. top Set/Get the inset from the top. zero Sets all the insets (top, left, bottom, right) to 0. AUTHOR
Cory Watson, "<gphat@cpan.org>" SEE ALSO
perl(1) COPYRIGHT &; LICENSE Copyright 2008-2010 by Cory G Watson. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.12.3 2010-08-21 Graphics::Primitive::Insets(3pm)
All times are GMT -4. The time now is 07:46 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy