Help with regex construction

Tags

shell scripts

Top Forums Shell Programming and Scripting Help with regex construction

09-23-2010

Registered User

2,759, 420

Join Date: Jun 2006

Last Activity: 13 September 2015, 8:58 PM EDT

Posts: 2,759

Thanks Given: 44

Thanked 420 Times in 408 Posts

Another way by awk

Code:

var=155
awk -v s=$var 'BEGIN{RS=" +";FS="[][,]"} {if ($2==s) print $3}' infile

rdcwayx

View Public Profile for rdcwayx

Find all posts by rdcwayx

09-23-2010

Registered User

1,305, 26

Join Date: Jun 2007

Last Activity: 11 November 2016, 3:44 AM EST

Location: Beijing China

Posts: 1,305

Thanks Given: 0

Thanked 26 Times in 26 Posts

perl

Code:

use Getopt::Std;
getopt(p);
while(<DATA>){
  if(/\[${opt_p},(.*?)\]/){
    print $1,"\n";
    exit;
  }
}
__DATA__
 aP      [1,P1]
  mP      [3,P2] [4,P2(1)]

summer_cherry

View Public Profile for summer_cherry

Find all posts by summer_cherry

Previous Thread | Next Thread

7 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Sendmail K command regex: adding exclusion/negative lookahead to regex -a@MATCH

I'm trying to get some exclusions into our sendmail regular expression for the K command. The following configuration & regex works: LOCAL_CONFIG # Kcheckaddress regex -a@MATCH +<@+?\.++?\.(us|info|to|br|bid|cn|ru) LOCAL_RULESETS SLocal_check_mail # check address against various regex...

2. Shell Programming and Scripting

Grep command construction

Hi, I have an array variable "arr" that reads string from a file "vari.txt". Thus, the array will be of variable length depending how many entries are present in "vari.txt" I use a for loop to traverse through the array. However, i need a grep command to grep for a file "output.txt" and...

3. Web Development

Website construction nowaday!

Hello, Actually I am not sure how to ask this question, which is about the technique advance on website construction/design. Compared with HTML/CSS, which ones are the most popular for website construction? My colleague recommends Drupal for Linux platform. Any other? Thanks! Yifang

4. Shell Programming and Scripting

case construction for basic Arithmetics calculation

the scrip (q4.sh) should perform the following calcuation (+, -, / and *) it should be used like this: q4.sh number1 operation number2 I wrote it already but the "*" does not work. #!/bin/bash #Date: 2010.10.19 # un script qui utilisera une instruction case pour effectuer des opérations...

5. Shell Programming and Scripting

Matrix construction

Hi I have to construct a rectangular matrix with 6012 rows and 2221 columns. Here the rows and columns were given by alphanumeric ids in a file named row.txt and column.txt respectively. with this row nd column ids I have to construct a matrix ie 6012*2221 and compare the column ids with...

6. Shell Programming and Scripting

Matrix construction

Hi experts How to construct a rectangular matrix for a text file with 6012 rows and 2221 columns. Thank You

7. Cybersecurity

Password Construction

Could someone please help, I am new to unix and I am trying to do the following: o Each password must have at least eight characters. Only the first eight characters are significant. PASSLENGTH is found in /etc/default/passwd and is set to 6. ...

Shell Programming and Scripting