A simple tip for newbies - how to get Java stack trace, the invaluable tool to debug java programs, in Linux:
- Type the Ctrl key followed by \, in short Ctrl \.

I just used it to debug a persistent problem where a server process which automatically fetches data from a third-party site was inexplicably hanging.

All of us who used Ctrl-Break on windows for a stack trace, like myself will find this non-intuitive. It took me some time and googling to figure this out, so I decided to (document) blog it once and for all.