Visit Our UNIX and Linux User Community


perl regular expression


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting perl regular expression
# 1  
Old 10-15-2009
perl regular expression

Dear all,

I have a simple issue on a perl regular expression. I want to get the characters in red from the next lines :
POWER_key
LEFT_key
RIGHT_key
OK_key
DOWN_key
and so on...
Thanks in advance for reply.
Ludo
# 2  
Old 10-15-2009
Code:
/([^_]*)_/

then your $1 will have what you wanted.

Previous Thread | Next Thread
Test Your Knowledge in Computers #139
Difficulty: Easy
The early Unix environment and the client-server program networking model were key elements in the development of the Internet.
True or False?

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Perl regular expression

Hi , I have the below array my @actionText = ("delivered to governor on 21/23/3345" , "deliver jllj" , "ram 2345/43"); When i am trying to grep the contents of array and if mathced substituting with the digitis or some date format from the element like below my @action = grep { $_ =~... (7 Replies)
Discussion started by: ragilla
7 Replies

2. 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

3. 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

4. Shell Programming and Scripting

Perl regular expression and %

Could you help me with this please. This regular expression seems to match for the wrong input #!/usr/bin/perl my $inputtext = "W1a$%XXX"; if($inputtext =~ m/+X+/) { print "matches\n"; } The problem seems to be %. if inputtext is W1a$XXX, the regex doesnot match.... (5 Replies)
Discussion started by: suppandi7
5 Replies

5. Shell Programming and Scripting

Perl Regular Expression

Hello, I am trying to use perl LWP module to read and get a specfic URL page. The issue is that the URL ends with the data and time and time is not consistent it changes all the time. if anyone could help me how to write a regular expressin that would work in the LWP::UserAgent get function to... (0 Replies)
Discussion started by: bataf
0 Replies

6. Shell Programming and Scripting

Regular expression in Perl

Hi, I need and expression for a word like abc_xyz_ykklm The expresion should indicate that the word starts with abc and end with ykklm but does not contain xyz string in the middle. Example: abc_tmn_ykklm is ok and abc_xyz_ykklm is not Ok. Please help. Regards. (1 Reply)
Discussion started by: asth
1 Replies

7. Shell Programming and Scripting

PERL regular expression

Hello all, I need to match the red expressions in the following lines : MACRO_P+P-_scrambledServices_REM_PRC30.xml MACRO_P+P-_scrambledServices_REM_RS636.xml MACRO_P+P-_scrambledServices_REM_RS535.xml and so on... Can anyone give me a PERL regular expression to match those characters ? ... (5 Replies)
Discussion started by: lsaas
5 Replies

8. Shell Programming and Scripting

regular expression in perl

hi, i want to extract the sessionID from this line. QnA Session Id : here the output should be-- QnA_SessionID=128589 Thanks NT (3 Replies)
Discussion started by: namishtiwari
3 Replies

9. Shell Programming and Scripting

perl regular expression

letz say that my file has 7 records with only one field. So my file has: 11111111 000000000000000 1111 aaaabbbccc 1111111222000000 aaaaaaaa zz All i need is: 1. when the field has a repetition of the same instance(a-z or 0-9), i would consideer it to be invalid.... (1 Reply)
Discussion started by: helengoldman
1 Replies

10. Shell Programming and Scripting

Regular expression help in perl

Hi all, I am trying to match a multi line string and return the matching string in one line. Here is the perl code that I wrote: #!/usr/bin/perl my $str='<title>My title</title>'; if ($str =~ /(<title>)(+)(<\/title>)/ ){ print "$2\n"; } It returns : My title I want the... (3 Replies)
Discussion started by: sdubey
3 Replies

Featured Tech Videos