I couldn't understand HUP

exper · 12-06-2003, 10:17 AM

newbie want know what means about HUP. like the following

kill -HUP 261.
how can i understant it
who can provide a clear explain

Thanks
D.Z

druuna · 12-06-2003, 10:55 AM

Take a look at:

man 7 signal

All so called signals are mentioned here and are explained.

btw: HUP = SIGHUP

linlu · 06-14-2005, 11:14 AM

I have been searching for a complete man page of signal (7). The ones I find have SIGHUP missing from them and it appears that the explanation for value 1 is missing. Any idea where I can find a complete man page on the web?

Here is a sample of what I keep finding:
http://netadmintools.com/html/7signal.man.html

Code:

Signal	Value	Action	Comment
		
			or death of controlling process
SIGINT	 2	Term	Interrupt from keyboard
SIGQUIT	 3	Core	Quit from keyboard
SIGILL	 4	Core	Illegal Instruction
SIGABRT	 6	Core	Abort signal from abort(3)
SIGFPE	 8	Core	Floating point exception
SIGKILL	 9	Term	Kill signal

This is the case in all the man pages I have looked at so far from googling around.

Thanks for any help,

jtshaw · 06-14-2005, 12:12 PM

SIGHUP = Signal Hangup. This signal is passed to a program when the terminal it spawned from exits. For example, say you open up a konsole in KDE and run game from the command prompt. Gaim starts up. You then close the konsole window.. gaim will now recieve a HUP signal and most likely will exit. The nohup program allows you to run a program from a terminal and ignore the SIGHUP signal.