The UNIX and Linux Forums  

Go Back   The UNIX and Linux Forums > Top Forums > Shell Programming and Scripting
.
google unix.com



Shell Programming and Scripting Post questions about KSH, CSH, SH, BASH, PERL, PHP, SED, AWK and OTHER shell scripts and shell scripting languages here.

More UNIX and Linux Forum Topics You Might Find Helpful
Thread Thread Starter Forum Replies Last Post
string comparison operators, what are they?? ballazrus Shell Programming and Scripting 12 04-07-2009 12:43 PM
string comparison Jatsui Shell Programming and Scripting 5 02-04-2008 04:28 PM
string comparison fedora Shell Programming and Scripting 2 01-03-2007 03:20 PM
Get Comparison operators from with RexExp umen Shell Programming and Scripting 3 07-19-2006 11:38 AM
String Comparison abey High Level Programming 1 10-19-2005 01:08 PM

Closed Thread
English Japanese Spanish French German Portuguese Italian Dutch Swedish Russian Norwegian Hungarian Hebrew Danish Bulgarian Greek Powered by Powered by Google
 
LinkBack Thread Tools Search this Thread Rate Thread Display Modes
  #1 (permalink)  
Old 05-16-2008
userix userix is offline
Registered User
  
 

Join Date: May 2008
Posts: 21
[sh] String comparison operators

I know in C shell, if I wanted to check if the inputted number was in a certain format, like a zip code, I can use the following code:
Code:
if ( $reply !~ [0-9][0-9][0-9][0-9][0-9] ) then
Now if I wanted to do the same thing in bourne shell script, I assume it would be something like this:
Code:
if [ $reply! = [0-9][0-9][0-9][0-9][0-9] ]
but this doesn't work when I tested it out. Does bourne shell support regex in if statement conditions?
  #2 (permalink)  
Old 05-16-2008
era era is offline Forum Advisor  
Herder of Useless Cats (On Sabbatical)
  
 

Join Date: Mar 2008
Location: /there/is/only/bin/sh
Posts: 3,652
Basic Bourne doesn't have regular expressions in the [ command, no. You can use case in this case (sic) though.

Code:
case $reply in [0-9][0-9][0-9][0-9][0-9]) rejoice;; esac
The case statement uses basic glob patterns, not full regular expressions. The expr command supports regular expressions, and many modern Bourne-compatible shells have extensions which add regex support to the shell itself.
Closed Thread

Bookmarks

Tags
regex, regular expressions

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 02:27 PM.


Powered by: vBulletin, Copyright ©2000 - 2006, Jelsoft Enterprises Limited. Language Translations Powered by .
vBCredits v1.4 Copyright ©2007 - 2008, PixelFX Studios
The UNIX and Linux Forums Content Copyright ©1993-2009. All Rights Reserved.Ad Management by RedTyger

Content Relevant URLs by vBSEO 3.2.0