Access a Groovy variable from within shell step in Jenkins pipeline

Question

Using the Pipeline plugin in Jenkins 2.x, how can I access a Groovy variable that is defined somewhere at stage- or node-level from within a sh step?

Si

Answer 1

I am adding the comment from @Pedro as an answer because I think it is important.

For sh env vars we must use

sh "echo \$some_var" 

Answer 2

In order to Pass groovy parameters into bash scripts in Jenkins pipelines - Use this post here

Answer 3

I would like to add another scenario to this discussion. I was using shell environment variables and groovy variables in the same script.

 format='html'
    for file in *.txt; 
        do mv  -- "\$file" "\${file%.txt}.$format";
    done

So here, What I have done is use \$ only for shell environment variables and use $ for groovy variables.

Answer 4

To use a templatable string, where variables are substituted into a string, use double quotes.

sh "echo $some_var"