Visit Our UNIX and Linux User Community


Perl : Numeric Range Pattern Matching


 
Thread Tools Search this Thread
Top Forums Programming Perl : Numeric Range Pattern Matching
# 1  
Old 07-17-2011
Java Perl : Numeric Range Pattern Matching

hi Experts

just wondering if you can help me check a number between a specific range

if i have an ip address , how can i say the valid number for ip between 1 to 254

something like this

if ($ip ) =~ /[1-254].[1-254].[1-254].[1-254]/
{

}


what the pattern i need to type


thanks
# 2  
Old 07-17-2011
You can try this:
Code:
$ip=~/(\d+)\.(\d+)\.(\d+)\.(\d+)/;
if ($1>=0 && $1<=255 && $2>=0 && $2<=255 && $3>=0 && $3<=255 && $4>=0 && $4<=255)
{
}

This User Gave Thanks to bartus11 For This Post:
# 3  
Old 07-17-2011
Quote:
Originally Posted by bartus11
You can try this:
Code:
$ip=~/(\d+)\.(\d+)\.(\d+)\.(\d+)/;
if ($1>=0 && $1<=255 && $2>=0 && $2<=255 && $3>=0 && $3<=255 && $4>=0 && $4<=255)
{
}

thanks ... it works

just wondering if i can do it in the patten matching
# 4  
Old 07-17-2011
It can be done, but it is not pretty Smilie
Code:
$ip=~/\b((2[0-5][0-5]\.)|(1?[0-9]?[0-9]\.)){3}((2[0-5][0-5])|(1?[0-9]?[0-9]))\b/

These 2 Users Gave Thanks to bartus11 For This Post:

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Extract range from config file matching pattern

I have config file like this: server_name xx opt1 opt2 opt3 suboptions1 #suboptions - disabled suboptions2 pattern suboptions3 server_name yy opt1 opt2 opt3 suboptions1 pattern #suboptions - disabled suboptions2 So basically I want to extract the server... (1 Reply)
Discussion started by: nemesis911
1 Replies

2. Shell Programming and Scripting

Pattern matching in Perl

Hi, I have a list of IP, eg : 192.168.0.15 192.168.0.24 192.168.2.110 192.168.2.200 And I would like the shortest pattern who match with '192.168.0' and '192.168.2' (without the last dot and number). (7 Replies)
Discussion started by: X-Or
7 Replies

3. Shell Programming and Scripting

Need help with perl pattern matching

My log file looks as given below, its actually a huge file around 1 GB and these are some of the line: conn=5368758 op=10628050 msgId=64 - RESULT err=0 tag=101 nentries=1 etime=0 conn=7462122 op=-1 msgId=-1 - fd=247 slot=247 LDAPS connection from 10.13.18.12:37645 to 10.18.6.45 conn=7462122... (5 Replies)
Discussion started by: sags007_99
5 Replies

4. Shell Programming and Scripting

print range of lines matching pattern and previous line

Hi all, on Solaris 10, I'd like to print a range of lines starting at pattern but also including the very first line before pattern. the following doesn't print the range starting at pattern and going down to the end of file: cat <my file> | sed -n -e '/<pattern>{x;p;}/' I need to include the... (1 Reply)
Discussion started by: siriche
1 Replies

5. Shell Programming and Scripting

Pattern Matching in PERL

I have a 2 files in .gz format and it consists of 5 million lines the format of the file would be gzcat file1.gz | more abcde aerere ffgh56 .. .. 12345 gzcat file2.gz | more abcde , 12345 , 67890, ffgh56 , 45623 ,12334 whatever the string is in the file1 should be matched... (3 Replies)
Discussion started by: aravindj80
3 Replies

6. Shell Programming and Scripting

Perl Pattern matching...

I am doing a file patterhn matching for a text file in PERL I am using this,,, but it says that no file is found $filepattern = '\d{1,4}.*A0NW9693.NDM.HBIDT.*.AD34XADJ.txt'; Can anyone help me out with Perl Pattern Matching concepts and how to do pattern matching for this txt file:... (4 Replies)
Discussion started by: msrahman
4 Replies

7. Shell Programming and Scripting

Perl pattern matching!!

Hi experts, I have many occurances of the following headers in a file. I need to grep for the word changed/inserted in the header, calculate the difference between the two numbers and list the count incrementally. Headers in a file look like this: ------------------- ---------------------... (6 Replies)
Discussion started by: nmattam
6 Replies

8. Shell Programming and Scripting

Perl -Pattern Matching help..!

Hi, I got doubt in Pattern matching, could you tell me how the following differs in action ?? if ( $line1==/$line2/ ) if ( $line1=~/$line2/ ) if ( $line1=~m/$line2/) What is the significance of '~' in matching. Thanks in advance CoolBhai (5 Replies)
Discussion started by: coolbhai
5 Replies

9. Shell Programming and Scripting

Perl Pattern Matching !!! Help

Hello I got the below one from in one of this forums For Ex: Loading File System Networking in nature now i need to extract the patterns between the words File and Networking : i.e. sample output: System cmd used : cat <file> | sed 's/.*File //' | sed 's/Closing.*$//' Actually... (0 Replies)
Discussion started by: maxmave
0 Replies

10. Shell Programming and Scripting

perl pattern matching

hi i am trying to get digits inside brackes from file , whose structure is defined below CREATE TABLE TELM (SOC_NO CHAR (3) NOT NULL, TXN_AMOUNT NUMBER (17,3) SIGN_ON_TIME CHAR (8) TELLER_APP_LIMIT NUMBER (17,3) FIL01 ... (2 Replies)
Discussion started by: zedex
2 Replies

Featured Tech Videos