Check if a file exists in jenkins pipeline

Question

I am trying to run a block if a directory exists in my jenkins workspace and the pipeline step "fileExists: Verify file exists" in workspace doesn't seem to work correctly.

I'm using Jenkins v 1.642 and Pipeline v 2.1. and trying to have a condition like

if ( fileExists 'test1' ) {   //Some block } 

What are the other alternatives I have within the pipeline?

Answer 1

You need to use brackets when using the fileExists step in an if condition or assign the returned value to a variable

Using variable:

def exists = fileExists 'file'  if (exists) {     echo 'Yes' } else {     echo 'No' } 

Using brackets:

if (fileExists('file')) {     echo 'Yes' } else {     echo 'No' } 

Answer 2

The keyword "return" must be used

stage('some stage') {     when { expression { return fileExists ('myfile') } }     steps {            echo "file exists"           }     }