jenkinsci.groovy

/*
 * Home directory:        /var/lib/jenkins/
 * Example Job Workspace: /var/lib/jenkins/.jenkins/workspace/Sterling-make-build/
 */
def command = """
apt-cache showpkg python3-pip
""";

def proc = command.execute();
proc.waitFor();

println "return code: ${ proc.exitValue()}";
println "stderr:\n${proc.err.text}";
println "stdout:\n${proc.in.text}";

// To cat a file do:
//File f = new File("/var/lib/jenkins/.pip/pip.log")
//f.eachLine { l -> println(l) }