Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Regular expression matching in BASH (equivalent of =~ in Perl)
Top Forums Shell Programming and Scripting Regular expression matching in BASH (equivalent of =~ in Perl) Post 302338336 by mrtiller on Monday 27th of July 2009 03:23:19 PM
Old 07-27-2009
Are you sure you are using version 3 or newer of bash?
To see which version you are using, do the following:

Code:
echo $BASH_VERSINFO

There is some example code at
Bash Regular Expressions | Linux Journal

If you don't have version 3 of bash, see ":" operator in the expr man page:
expr(1): evaluate expressions - Linux man page

You can also use the "case" statement in bash to do matching, but filename matching rules are used instead of regular expression rules.
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Regular expression matching a new line

I have written a script to test some isdn links in my network and I am trying to format the output to be more readable. Each line of the output has a different number of digits as follows... Sitename , spid1 12345678901234 1234567890 1234567 , spid2 1234567890 1234567890 1234567 Sitename , ... (1 Reply)
Discussion started by: drheams
1 Replies

2. Shell Programming and Scripting

Getting equivalent values using regular expression

Hi, I have data (seperated by "\n") like this: MN - Regular expressions are a syntax, implemented in Perl and certain other environments, making it not only possible but easy to do some of the following. ID - 12,13 BA - Character classes are alternative single characters... (1 Reply)
Discussion started by: vanitham
1 Replies

3. Programming

Regular Expression matching in PERL

I am trying to read a file and capture particular lines into different strings: LENGTH: Some Content here TEXT: Some Content Here COMMENT: Some Content Here I want to be able to get (LENGTH: .... ) into one array and so on... I'm trying to use PERL in slurp mode but for some reason... (8 Replies)
Discussion started by: Legend986
8 Replies

4. Shell Programming and Scripting

Help: Regular Expression for Negate Matching String

Hi guys, as per subject I am having problem with regular expressions. Example, if i got a string "javax.servlet.http.HttpServlet.service" that may occurred anywhere within a text file. How can I used the negate pattern matching of regular expression? I tried the below pattern but it... (4 Replies)
Discussion started by: DrivesMeCrazy
4 Replies

5. Shell Programming and Scripting

Regular expression matching

Hi, I have a variable in my script that gets its value from a procstack output. It could be a number of any length, or it could just be a '1' with 0 or more white spaces around it. I would like to detect when this variable is just a 1 and not a 1234, for example. This is as far as I got: ... (3 Replies)
Discussion started by: tmf33uk
3 Replies

6. Shell Programming and Scripting

Matching single quote in a regular expression

I trying to match the begining of the following line in a perl script with a regular expression. $ENV{'ORACLE_HOME'} I tried this regluar expession: /\$ENV\{\'ORACLE_HOME\'\}/ Instead of match, I got a blank prompt > It seems to be a problem with the single quote. If I take it... (11 Replies)
Discussion started by: JC9672
11 Replies

7. Shell Programming and Scripting

Hidden Characters in Regular Expression Matching Perl - Perl Newbie

I am completely new to perl programming. My father is helping me learn said programming language. However, I am stuck on one of the assignments he has given me, and I can't find very much help with it via google, either because I have a tiny attention span, or because I can be very very dense. ... (4 Replies)
Discussion started by: kittyluva2
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. UNIX for Dummies Questions & Answers

delete lines matching a regular expression

I have a very large file (over 700 million lines) that has some lines that I need to delete. An example of 5 lines of the file: HS4_80:8:2303:19153:193032 153 k80:138891 HS4_80:8:2105:5544:43174 89 k88:81949 165 k88:81949 323 0 * = 323 0 ... (6 Replies)
Discussion started by: pathunkathunk
6 Replies

10. Shell Programming and Scripting

regular expression matching whole words

Hi Consider the file this is a good line when running grep '\b(good|great|excellent)\b' file5 I expect it to match the line but it doesn't... what am i doing wrong?? (ultimately this regex will be in a awk script- just using grep to test it) Thanks, Storms (5 Replies)
Discussion started by: Storms
5 Replies

LEARN ABOUT CENTOS

ldbsearch

LDBSEARCH(1)						    System Administration tools 					      LDBSEARCH(1)

NAME

       ldbsearch - Search for records in a LDB database

SYNOPSIS

       ldbsearch [-h] [-s base|one|sub] [-b basedn] [-i] [-H LDB-URL] [expression] [attributes]

DESCRIPTION

       ldbsearch searches a LDB database for records matching the specified expression (see the ldapsearch(1) manpage for a description of the
       expression format). For each record, the specified attributes are printed.

OPTIONS

       -h
	   Show list of available options.

       -H <ldb-url>
	   LDB URL to connect to. See ldb(3) for details.

       -s one|sub|base
	   Search scope to use. One-level, subtree or base.

       -i
	   Read search expressions from stdin.

       -b basedn
	   Specify Base DN to use.

ENVIRONMENT

       LDB_URL
	   LDB URL to connect to (can be overrided by using the -H command-line option.)

VERSION

       This man page is correct for version 1.1 of LDB.

SEE ALSO

       ldb(3), ldbedit(1)

AUTHOR

       ldb was written by Andrew Tridgell[1].

       If you wish to report a problem or make a suggestion then please see the http://ldb.samba.org/ web site for current contact and maintainer
       information.

       This manpage was written by Jelmer Vernooij.

NOTES

	1. Andrew Tridgell
	   http://samba.org/~tridge/

LDB 1.1 							    06/17/2014							      LDBSEARCH(1)
All times are GMT -4. The time now is 12:51 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy