Run bash command on jenkins pipeline

Question

Inside a groovy script (for a jenkins pipeline): How can I run a bash command instead of a sh command?

I have tried the following:

Call "#!/bin/bash" inside the sh call:

stage('Setting the variables values') {     steps {          sh '''             #!/bin/bash             echo "hello world"          '''     } } 

Replace the sh call with a bash call:

stage('Setting the variables values') {     steps {          bash '''             #!/bin/bash             echo "hello world"          '''     } } 

Additional Info:

My command is more complex than a echo hello world.

Answer 1

The Groovy script you provided is formatting the first line as a blank line in the resultant script. The shebang, telling the script to run with /bin/bash instead of /bin/sh, needs to be on the first line of the file or it will be ignored.

So instead, you should format your Groovy like this:

stage('Setting the variables values') {     steps {          sh '''#!/bin/bash                  echo "hello world"           '''     } } 

And it will execute with /bin/bash.