Code MEL for a while and you'll soon learn that Maya does not provide a method for terminating a runaway script. If you lose communication with Maya's UI, you're pretty well resigned to killing its task.
abortTest’ function provides a pro-active method for killing non-responsive scripts.
It tests for the presence of a file called "
DIE" in your
$HOME/maya/" directory and returns a non-zero value if this file
exists. The "
DIE" file is deleted after detection.
Insert the following code in your MEL script, for example in a time-consuming
if ( abortTest() ) error( "Aborted externally!" );
Now if this script gets out of control, you can force it to exit by creating
DIE’ file from a shell: