title: GDB: How to check current line number during debug
body: <p>How do I check the current line number that I'm stopped in when debugging with GDB?  I would have thought this would be obvious (and maybe it is) but I don't see it on the <a href="http://darkdust.net/files/GDB%20Cheat%20Sheet.pdf" rel="noreferrer">GDB Cheat Sheet</a>.</p>