Cannot replace line after string match in jenkins pipeline using variables

Question

I need to replace a line in a file. If the line starts with the term "url", I need to replace the value.

file.txt --

...
url : http://www.google.com
..

I need to change this value to url : http://www.facebook.com

I tried the following code but it did not work -

FACEBOOK_URL = "http://www.facebook.com"
sh("sed -i \\"s?^url.*\\$?url: ${FACEBOOK_URL}?\\" file.txt")

I'm using a Jenkins Pipeline. I need to replace the string using a variable.

Answer 1

Jenkins 2 Pipeline builds use Groovy and it is very easy to read the file using readfile and then we can do the changes

def text = readFile "file.txt"
text.replaceAll("url.*", "url: ${FACEBOOK_URL}")

The above code will help in replacing the text in the file, if you want to write the content to file, you can use writeFile

Answer 2

You can use this for replacing a string in a file in Jenkins 2 Pipeline builds:

def text = readFile file: "file.txt"
text = text.replaceAll("%version%", "${VERSION}")
writeFile file: "file.txt", text: text