Get the end of the string with regex

Question

I need to separate lines of strings and so far i got to the point where i need to get the end of them. And that's where my problem is.

My regex looks like this:

//these work fine
$firstRegex = "/^\w{3}\s+\d\s\d{2}:\d{2}:\d{2}/i";
$secondRegex = "/\w{1,}\s\w{4}\[\d{4}\]/i";
$thirdRegex = "/\w{1,}\(.*?\)/";
//this is the incorrect regex
$fourthRegex = "/(\w+\s+)+\(.*\)$/";

Here are some of the lines that i need this regex for:

Oct 6 15:39:01 linux_server CRON[5921]: pam_unix(cron:session): session opened for user root by (uid=0)

Oct 6 15:39:01 linux_server CRON[5921]: pam_unix(cron:session): session closed for user root

They should be with either brackets or without them. My result is:

Oct 6 15:39:01 linux_server CRON[5921] pam_unix(cron:session)

Oct 6 15:39:01 linux_server CRON[5921] pam_unix(cron:session)

What is the issue? Is it that the last regex must match whitespace separated words followed with an optional parenthesized part? Then try \w+(?:\s+\w+)*(?:\s*$.*$)?$. See this regex demo. — Wiktor Stribiżew
– Wiktor Stribiżew, Commented Oct 18, 2019 at 19:53

Chirag Bhatia · Accepted Answer · 2019-10-18 18:15:11Z

1

For this you will have to use positive look behind, I am trying to match all the characters that follow ):

(?<=\)\:).*

You can use regexr.com to work with regex.

answered Oct 18, 2019 at 18:15

Chirag Bhatia

796 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Matt.G · Accepted Answer · 2019-10-18 18:28:08Z

0

Try Regex: ^(\w{3} \d{1,2}\s\d{2}:\d{2}:\d{2}) (\w+) (\w{4}\[\d{4}\]): (\w+?$.*?$): ([\w ]+)($.*?$)?$

Demo

answered Oct 18, 2019 at 18:28

Matt.G

3,6092 gold badges12 silver badges24 bronze badges

Collectives™ on Stack Overflow

Get the end of the string with regex

2 Answers 2

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related