how can a daemon output to console

[Jason Chan]

Dear all,

I am using the Proc:aemon module to make my script run in the
background. When there is a critical error, I want to output a error
message to the user so that he can *see* it. I tried the following but
doesn't work:
print STDERR "FATAL Error message";

Any idea?

TIA,
Michael Fung

 

[Malcolm Dew-Jones]

Jason Chan ([email protected]) wrote:
: Dear all,

: I am using the Proc:aemon module to make my script run in the
: background. When there is a critical error, I want to output a error
: message to the user so that he can *see* it. I tried the following but
: doesn't work:
: print STDERR "FATAL Error message";

: Any idea?

One option would be Sys::Syslog. I think you'll find that one of the
logging options is to send the message to the console, but sending it to a
log file (see /etc/syslog.conf maybe?) may be even better, since if it's a
daemon then what "user" will actually be examining the console?

If you want to print to STDERR during development, then syslog may have an
option to do that also, though in that case you may not want to truly
daemonize, merely go into the background (perhaps Proc:aemon has options
to control that sort of thing).

 

[Michele Dondi]

One option would be Sys::Syslog. I think you'll find that one of the
logging options is to send the message to the console, but sending it to a
log file (see /etc/syslog.conf maybe?) may be even better, since if it's a
daemon then what "user" will actually be examining the console?

Personally, as a user of some machines of which I was not the admin,
I've always been annoyed by system error messages appearing on the
console at any time (I remember a particularly annoying one about
/dev/hdb4 iirc, probably from the kernel itself), but OTOH it is also
true that at least with some of these errors, if common users would
have not warned the wise admins about "Hey, what's up here? Did I do
something wrong?!?", then the wise admins probably would have never
known that there was something going wrong...

Who knows?!?


Michele

 

[Jason Chan]

(e-mail address removed) (Malcolm Dew-Jones) wrote in message >

One option would be Sys::Syslog. I think you'll find that one of the
logging options is to send the message to the console, but sending it to a
log file (see /etc/syslog.conf maybe?) may be even better, since if it's a
daemon then what "user" will actually be examining the console?

Thanks for your comment.

Rgds,
Michael