Mr Smith,
I saw your elementary question at about 8:50 AM. I did not answer it, since it
was not clear to me too. I have seen Bob ( who I have never spoken with or by no means
friend of me) answering good, difficult questions very legibly. If you think you have
know better unix, then you may kindly let us know :
1) why were you not able to use unix system("kill..") command, than waiting for
perl group to answer?
2) how you can print "\n" while 'command' has already been writing the log file.
(in case 'command was in background')
3) don't you think you contradict either in (2) or in trying to signal the
process that is already over before print "\n" (in case not in background)
If you want to send singal hangup the process use : kill HUP => $PID
with regards,
Jay
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Sent: Friday, May 07, 2004 12:36 PM
To: Bob Showalter
Cc: Beginners Perl
Subject: RE: process signals
If you dont understand my question then I assume you do not know unix or
tail -f ? I want to after a sleep of 5-8 seconds, send a kill signal to
the previous command then increment the counter. thank you!
Derek B. Smith
OhioHealth IT
UNIX / TSM / EDM Teams
Bob Showalter <[EMAIL PROTECTED]>
05/07/2004 10:57 AM
To: "'[EMAIL PROTECTED]'" <[EMAIL PROTECTED]>, Beginners Perl
<[EMAIL PROTECTED]>
cc:
Subject: RE: process signals
[EMAIL PROTECTED] wrote:
> I have an application system command that is like tail -f in UNIX and
> I want to say
>
> x=1
> while x < 10
> do
> 'command' append to log
> print "\n" append to log
> issue HANGUP or KILL SIGNAL
> x+=1
> done
>
> How do I issue a hangup signal to this process using perl?
I'm not sure I understand your problem, but the perl way to send a signal
is
with the kill() function. The way to catch a signal is by installing a
handler using the %SIG hash.
perldoc -f kill
perldoc perlipc
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