Command console

java -jar jenkins-cli.jar -s http://192.168.0.70:8899/jenkins/ -webSocket console JOB [BUILD] [-f] [-n N]

Produces the console output of a specific build to stdout, as if you are doing 'cat build.log'

 JOB   : Name of the job
 BUILD : Build number or permalink to point to the build. Defaults to the last
         build (default: lastBuild)
 -f    : If the build is in progress, stay around and append console output as
         it comes, like 'tail -f' (default: false)
 -n N  : Display the last N lines (default: -1)