Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: grep regular expression to find = not ==
Top Forums UNIX for Dummies Questions & Answers grep regular expression to find = not == Post 302413391 by offkilter on Thursday 15th of April 2010 12:14:23 PM
Old 04-15-2010
vbe,

I tried Anbu23's syntax by itself and it found too many non-matching lines. I tried it combined with what I had (adding in the [^=] before =)
Code:
egrep "^if\b*\(.+[^=]=[^=]*" *.cpp

but it still found the same lines it finds without his addition - i.e., ones with ==.
However, if I take away the final *, then it DOES work, which makes sense. I see why the final * makes it not work. And now I see why the first [^=] is required, so thank you both.

Neo,
Thank you for your suggestion - it is not matching any lines - but it will be helpful as a learning experience trying to tweak it.
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

grep : regular expression

guys, my requirment goes like this: I have a file, and wish to filter out records where 1. The first letter is o or O and 2. The next 4 following letter should not be ther I do not wish to use pipe and wish to do it in one shot. The best expression I came up with is: grep ^*... (10 Replies)
Discussion started by: RishiPahuja
10 Replies

2. UNIX for Advanced & Expert Users

regarding grep regular expression

When i do ls -ld RT_BP* i am getting the following list. drwxrwx--- 2 user group 256 Oct 17 10:09 RT_BP809 drwxrwx--- 2user group 256 Oct 17 10:09 RT_BP809.O drwxrwx--- 2 user group 256 Oct 17 10:09 RT_BP810 drwxrwx--- 2user group 256 Oct... (2 Replies)
Discussion started by: ukatru
2 Replies

3. Shell Programming and Scripting

grep with regular expression

Hi, guys. I have one question, hope somebody can give me a hand I have a file called passwd, the contents of it arebelow: *********************** ... goldsimj:x:5008:200: goldsij2:x:5009:200: whitej:x:5010:201: brownj:x:5011:202: goldsij3:x:5012:204: greyp:x:5013:203: ...... (6 Replies)
Discussion started by: daikeyang
6 Replies

4. Shell Programming and Scripting

grep regular expression

please can someone tell me what the following regrex means grep "^aa*$" <file> I thought this would match any word beginning with aa and ending with $, but it doesnt. Thanks in advance Calypso (7 Replies)
Discussion started by: Calypso
7 Replies

5. Shell Programming and Scripting

grep and regular expression

Hi, I am executing a svnlook command to check to see if the following line exists. I need a regular expression to represent the line. A /test/test1/qa/test2/index.html A /test/test1/qa/test3/test.jpg A /test/test1/qa/test3/test1.jpg A /test/test1/qa/test4/test.swf I just need to extract... (9 Replies)
Discussion started by: kminkeller
9 Replies

6. Shell Programming and Scripting

Using grep and regular expression to find class references in a c++ file

I'm trying to math all class references in a C++ file using grep with regular expression. I'm trying to know if a specific include is usuless or not, so I have to know if there is a refence in cpp. I wrote this RE that searches for a reference from class ABCZ, but unfortunately it isn't working... (0 Replies)
Discussion started by: passerby
0 Replies

7. Shell Programming and Scripting

Help with grep / regular expression

Hi, Input file: -13- -1er- -1xyz1- -1xz12- -2ab1- -2ab2-- -143- Code: grep '^*\-' input.txt Wrong output: -13- -1xyz1- -2ab1- -2ab2-- (4 Replies)
Discussion started by: dragon.1431
4 Replies

8. Programming

Perl: How to read from a file, do regular expression and then replace the found regular expression

Hi all, How am I read a file, find the match regular expression and overwrite to the same files. open DESTINATION_FILE, "<tmptravl.dat" or die "tmptravl.dat"; open NEW_DESTINATION_FILE, ">new_tmptravl.dat" or die "new_tmptravl.dat"; while (<DESTINATION_FILE>) { # print... (1 Reply)
Discussion started by: jessy83
1 Replies

9. Shell Programming and Scripting

Grep + Regular expression or

Hi , I have few lines like A20120101.ANU.ZIP A20120401.ABC.ZIP A20120105.KJK.ZIP A20120809.JUG.ZIP A20120101.MAT.ZIP B20120301.ANU.XIP I want to filter by 1. Files starting with A and Ending With Z ( ^A.*.ZIP$) 2. And either ANU, or KJK or MAT in the file name. Hope my... (6 Replies)
Discussion started by: Anupam_Halder
6 Replies

10. UNIX for Beginners Questions & Answers

Grep regular expression

I want to track only below: I am using below, but it doesn't work: (6 Replies)
Discussion started by: proactiveaditya
6 Replies

LEARN ABOUT REDHAT

xjack

XScreenSaver(1) 					      General Commands Manual						   XScreenSaver(1)

NAME

       xjack - all work and no play makes jack a dull boy

SYNOPSIS

       xjack [-display host:display.screen] [-foreground color] [-background color] [-window] [-root] [-delay usecs]

DESCRIPTION

       All  work and no play makes jack a dull boy.  All work and no play makes jack a dull boy.  All work and no play makes jack a dull boy.  All
       work and no play makes jack a dull boy.	All work and no play makes jack a dull boy.  All work and no play makes jack a dull boy.

	       All work and no play makes jack a dull boy.  All work and no play makes jack a dull boy.  All work and no play makes  jack  a  dull
	       boy.   All  work and no play makes jack a dull boy.  All work and no play makes jack a dull boy.  All work and no play makes jack a
	       dull boy.

	       All work and no play makes jack a dull boy.  All work and no play makes jack a dull boy.  All work and no play makes  jack  a  dull
	       boy.   All  work and no play makes jack a dull boy.  All work and no play makes jack a dull boy.  All work and no play makes jack a
	       dull boy.  All work and no play makes jack a dull boy.  All work and no play makes jack a dull boy.

       All work and no play makes jack a dull boy.  All work and no play makes jack a dull boy.  All work and no play makes jack a dull boy.   All
       work and no play makes jack a dull boy.	All work and no play makes jack a dull boy.  All work and no play makes jack a dull boy.  All work
       and no play makes jack a dull boy.  All work and no play makes jack a dull boy.

ENVIRONMENT

       DISPLAY All work and no play makes jack a dull boy.

       XENVIRONMENT
	       All work and no play makes jack a dull boy.  All work and no play makes jack a dull boy.

SEE ALSO

       X(1), xscreensaver(1)

COPYRIGHT

       Copyright (C) 1997 by Jamie Zawinski.  All work and no play makes jack a dull boy.  All work and no play makes jack a dull boy.	 All  work
       and  no	play  makes  jack a dull boy.  All work and no play makes jack a dull boy.  All work and no play makes jack a fnord dull boy.  All
       work and no play makes jack a dull boy.

AUTHOR

       Jamie Zawinski <jwz@jwz.org>, 15-Nov-97.

X Version 11							     18-sep-97							   XScreenSaver(1)
All times are GMT -4. The time now is 09:52 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy