shellattach

shellattach allows you to start and attach to a remote Groovy Shell on an already running JVM.
shellattach spawns a Groovy Shell Server on an already running JVM.

Quick Start

shellattach requires socat to be able to run.
shellattach builds with Gradle.

To Build

git clone https://github.com/oxtoacart/shellattach.git
cd shellattach
gradle shadow

To Run

Find your Java process id using jps (comes with Java).

> jps
55885 lantern-1.1.0-beta2-SNAPSHOT.jar
55918 Jps
68818

Start the remote shell on port 6789 for pid 55885

> ./shellstart 6789 55885
Loaded shellattach agent, listening for socat connection at port 6789

Connect to the remote shell

> ./shellconnect 6789
Groovy Shell (2.1.9, JVM: 1.7.0_45)
Type 'help' or '\h' for help.
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
groovy:000> 

You're now in a Groovy shell that has full access to the JVM running as pid 55885!
To connect again later, there's no need to rerun shellstart, just use shellconnect.

from https://github.com/oxtoacart/shellattach