Re: [cobalt-users] what does this all mean ?

[flash22@xxxxxxx]

On Fri, 28 Sep 2001, brain_damaged wrote:

> Been side tracked and finally looked at the raq2 logs.
> what does the SIGUSR1 all about ?

[notice] SIGUSR1 received.  Doing graceful restart
[notice] Apache/1.3.3 Cobalt (Unix)  (Red Hat/Linux)

SIGUSR1 is the signal that is sent to the web server to tell it to
restart, generally when you make a change via the GUI or restart it with
the script's.....it's a 'normal' restart of the web server...
[makes it reload the config files mostly]

Other signals do things like telling programs to stop, quit, telling them
about various external events that happen asyncronously...etc   

USR1 is 'UserDefined, that is, it's not specificlly intended for anything
in particular, so programs can use it for general things, many programs
use it as a request to reload the configuration files, some use SIGHUP
which is the signal that a program normally gets when you 'Hang Up' or
dosconnect the terminal, but for a background program that runs all the
time there is no terminal so they use that signal...

gsh