The whole series of actions available through the Pipeline Widget can be performed in series through the PIPELINE command.
Command PIPELINE * will perform all the actions, without any user interaction. The PIPELINE button in the Pipeline widget will do the same (and also the GO button, as usual in GILDAS widgets).
A specific step can be performed by command PIPELINE StepName. The available step sequence is ORGANIZE, SETUP (the suite of FIND, SELECT, EXPLORE, and SCAN, CHECK, COMPUTE, COLLECT, APPLY, SHOW, TIME, TABLES, IMAGING, and ultimately SAVE to remember the parameters used in the processing. PIPELINE LAST will repeat the last step (presumably after you changed a control variable !...) while PIPELINE NEXT will execute the next one.