Sponsored Content
Full Discussion: regex question
Top Forums UNIX for Dummies Questions & Answers regex question Post 47493 by oombera on Wednesday 11th of February 2004 01:54:51 PM
Old 02-11-2004
Code:
#! /bin/bash

cat /var/log/wtmp | egrep "[0-9]+\.[0-9]+\.[0-9]+\.[0-9]" | sort -u | while read LINE
do
  grep $LINE input.txt | awk '{if ($3 != "") for (i=3; i<=NF; i+=1) printf $i " "} END {if ($3 != "") print ""}' | tee -a some/logfile
done

 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

regex question

I have a simple file test.out that contains data in the form of key1=A|shift1 key2=B|shift2 key3=C|shift3 and so on. I need to get it to print A B C I can do it using lookbehind assertion such as this ( ?<==)() yet I was wondering if there is another way of mutching single... (8 Replies)
Discussion started by: arushunter
8 Replies

2. Shell Programming and Scripting

regex question

Hi I have a question on regex There is a line in a script like my_file="$(echo SunMonTueWed | sed "s//_&g") " My question what does the expression _&g do. Obviously in this example the output is _Sun_Mon_Tue_Wed Another question can i use some trick to get the result like... (3 Replies)
Discussion started by: xiamin
3 Replies

3. Shell Programming and Scripting

regex question

Hi, im sure this is really simple but i cant quite figure it out. how do i test against a word at the beginning of the line but up to the point of a delimiter i.e. ":" for example if i wanted to test against the user in the /etc/passwd file peter:x:101:100:peters account:/var/peter:/bin/sh ... (3 Replies)
Discussion started by: hcclnoodles
3 Replies

4. Shell Programming and Scripting

Question on regex with * and .

I have a basic question regarding * and . while using regex: # echo 3 | grep ^*$ 3 I think I understood why it outputs "3" here (because '*' matches zero or more of the previous character) but I don't understand the output of the following command: # echo 3 | grep ^.$ # I thought I... (7 Replies)
Discussion started by: mirage
7 Replies

5. UNIX for Dummies Questions & Answers

regex question

I have dates in mm/dd/yy format that I wish to convert to yy-mm-dd format. ()/()/() finds them, but when I try to replace with $3-$1-$2 both kate and kwrite treat it as a text literal. (2 Replies)
Discussion started by: porphyry5
2 Replies

6. Shell Programming and Scripting

RegEX question

Hi, I am trying to write a regex for myscript and need some input from experts. here is what I must grep for TICKET{Sapce}{Space}{hyphen} so here is the example data TICKET 34554, CT-12345, TICKET 12345: some text here TICKET 2342, CT-12345, MA-12344: some text here TICKET... (5 Replies)
Discussion started by: rider29
5 Replies

7. Shell Programming and Scripting

regex question

Hi guys, I have a file in the following format: cmpr5551 cmpr6002 cmpr93 anne 5454 bbro 434 cmprsvc cmprsvc7 ffgi55 vefe99 cmprsvc8 cmprsvc9 I need to "grep" only the entries which start with "cmpr" followed by the number. All other entries should be excluded. I was trying to use... (3 Replies)
Discussion started by: aoussenko
3 Replies

8. Shell Programming and Scripting

regex question

Hi guys, I am trying to "grep" or "egrep" the following entry out of the file using regex: MACCDB1 or MACCDB2 The problem is that the file might contain other entries which start with "MACCDB" string. I was trying to use regex to "grep" the exact pattern but it fails to output the correct... (2 Replies)
Discussion started by: aoussenko
2 Replies

9. Shell Programming and Scripting

Regex Question

Hi I am trying to match lines having following string BIND dn="uid= putting something like this is not working : /\sBIND dn="uid=/ Any suggestion. Thanks. John (9 Replies)
Discussion started by: john_prince
9 Replies

10. Shell Programming and Scripting

Regex question

I want to match all occurrence of 01,03,05,07,10,11 at 9th and 10th position of a string . I tried the following but its also matching characters like 33 or 11 on 9th and 10th position . sed "/^\{8\}00/d" A.TXT 000000001000 433483433339 <<< wrong 121121211100 <<< wrong 167710000110... (10 Replies)
Discussion started by: boncuk
10 Replies
SPLIT(3)								 1								  SPLIT(3)

split - Split string into array by regular expression

SYNOPSIS
array split (string $pattern, string $string, [int $limit = -1]) DESCRIPTION
Splits a $string into array by regular expression. Warning This function has been DEPRECATED as of PHP 5.3.0. Relying on this feature is highly discouraged. PARAMETERS
o $pattern - Case sensitive regular expression. If you want to split on any of the characters which are considered special by regular expressions, you'll need to escape them first. If you think split(3) (or any other regex function, for that matter) is doing some- thing weird, please read the file regex.7, included in the regex/ subdirectory of the PHP distribution. It's in manpage format, so you'll want to do something along the lines of man /usr/local/src/regex/regex.7 in order to read it. o $string - The input string. o $limit - If $limit is set, the returned array will contain a maximum of $limit elements with the last element containing the whole rest of $string. RETURN VALUES
Returns an array of strings, each of which is a substring of $string formed by splitting it on boundaries formed by the case-sensitive regular expression $pattern. If there are n occurrences of $pattern, the returned array will contain n+1 items. For example, if there is no occurrence of $pattern, an array with only one element will be returned. Of course, this is also true if $string is empty. If an error occurs, split(3) returns FALSE. EXAMPLES
Example #1 split(3) example To split off the first four fields from a line from /etc/passwd: <?php list($user, $pass, $uid, $gid, $extra) = split(":", $passwd_line, 5); ?> Example #2 split(3) example To parse a date which may be delimited with slashes, dots, or hyphens: <?php // Delimiters may be slash, dot, or hyphen $date = "04/30/1973"; list($month, $day, $year) = split('[/.-]', $date); echo "Month: $month; Day: $day; Year: $year<br /> "; ?> NOTES
Note As of PHP 5.3.0, the regex extension is deprecated in favor of the PCRE extension. Calling this function will issue an E_DEPRECATED notice. See the list of differences for help on converting to PCRE. Tip split(3) is deprecated as of PHP 5.3.0. preg_split(3) is the suggested alternative to this function. If you don't require the power of regular expressions, it is faster to use explode(3), which doesn't incur the overhead of the regular expression engine. Tip For users looking for a way to emulate Perl's @chars = split('', $str) behaviour, please see the examples for preg_split(3) or str_split(3). SEE ALSO
preg_split(3), spliti(3), str_split(3), explode(3), implode(3), chunk_split(3), wordwrap(3). PHP Documentation Group SPLIT(3)
All times are GMT -4. The time now is 08:56 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy