One thing I commonly use GDB for is getting a stack trace after a program I am working on sigfaults
I added this to my .bashrc
gcatch(){
gdb -ex 'r' -ex 'back' -ex 'q' --args $*
}
So if my program segfaults I can press up and prepend gcatch to the command and voila! Stack trace.
The name gcatch comes from the frysk command line utility fcatch which performs the same job.
