How to use regex in pipeline

Using Jenkins Ask a question
1

Hi,

I want to use regex in the pipeline but I’m seeing build failures because of $ symbol. Can you please let me know how can I use that ? Below is code snippet.

sshagent () {
    sh """
        #!/bin/bash
        git clone <repo>
        cd repo
        if git branch -r | grep -E "$branchName($|\s)"; then
              echo "Found"
        fi
    """
}

If I escape $ by using , the grep command is not working. Btw, I have to also escape \s as \s.

My final goal is to make sure to find the branch which is ending with specific branchName.

Thanks in advance,
SheshaChandra

2

You’re using double quotes for the sh step. Unless you want to have string interpolation done by groovy you should use single quotes. Then you don’t need to escape $ and \

sh '''
 ...
'''
3

@mawinter69 , Thanks for replying back.
I have few variables in the shell script which needs interpolation and so cannot use single quotes as that doesn’t work.
For ex., $branchName

4

You could set them as env variables with
withEnv step.

If you want to stay with groovy interpolation you will need to quote the $ from groovy

sshagent () {
    sh """
        #!/bin/bash
        git clone <repo>
        cd repo
        if git branch -r | grep -E "$branchName(\$|\\s)"; then
              echo "Found"
        fi
    """
}
1 Like
5

Thanks. Let me try this and will update…