Solved

replace value in file between two other values

Posted on 2004-10-07
2
170 Views
Last Modified: 2010-05-18
I have a huge file and who like to replace all instances of

host=something;

The value of host could also be

hostname="something";

I gather I need to find each occurrence of the word host and replace whether value is there from the equal sign to the semi-colon. I will replace the value of host to be “testhost”
0
Comment
Question by:MatthewF
2 Comments
 
LVL 10

Accepted Solution

by:
rj2 earned 75 total points
ID: 12251639
$text=~s/host(?:name)?=[^;]+;/host=testhost;/g;
0
 
LVL 48

Expert Comment

by:Tintin
ID: 12253416
And to rj2's regex from the command line, do:

 perl -i.bak -pe 's/host(?:name)?=[^;]+;/host=testhost;/g' hugefile

the -i.bak will create a backup of the file before doing the subsitution.
0

Featured Post

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Many time we need to work with multiple files all together. If its windows system then we can use some GUI based editor to accomplish our task. But what if you are on putty or have only CLI(Command Line Interface) as an option to  edit your files. I…
Email validation in proper way is  very important validation required in any web pages. This code is self explainable except that Regular Expression which I used for pattern matching. I originally published as a thread on my website : http://www…
Explain concepts important to validation of email addresses with regular expressions. Applies to most languages/tools that uses regular expressions. Consider email address RFCs: Look at HTML5 form input element (with type=email) regex pattern: T…

679 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question