What's the difference between SIGSTOP and SIGTSTP?
That's it. Just wondering about the difference between SIGSTOP and SIGTSTP. jlliagre Both signals are designed to suspend a process which will be eventually resumed with SIGCONT . The main differences between them are: SIGSTOP is a signal sent programmatically (eg: kill -STOP pid ) while SIGTSTP (for sig nal - t erminal stop ) may also be sent through the tty driver by a user typing on a keyboard, usually Control - Z . SIGSTOP cannot be ignored. SIGTSTP might be. /usr/include/x86_64-linux-gnu/bits/signum.h #define SIGSTOP 19 /* Stop, unblockable (POSIX). */ #define SIGTSTP 20 /* Keyboard stop