Re: run command on logfile before it's rotated
Today Akifyev Sergey wrote:
On Thu, 2002-12-05 at 01:02, Nathan Kinkade wrote:
On Wed, Dec 04, 2002 at 10:51:43PM +0100, Thomas von Hassel wrote:
I've got my system set up to rotate the maillog every day at midnight.
What do i do if i want to run a command on the logfile just before it's
rotated ?
/thomas
--
Thomas von Hassel
DarX @ irc
darxmac @ AIM/iChat
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How about just setting a cron job to run some reasonable period prior
to newsyslog being run?
It's incorrect way to do things, because some entries could be added to
syslog _after_ the command is run, but _before_ newsyslog. Instead you
should call some script via cron with crontab entry like this:
# rotate log files every hour, if necessary
0 * * * * root /usr/bin/lock_script.sh
And the script must contain something like:
#!/bin/sh
for $STR in `cat /etc/newsyslog.conf |grep -v '^[:space:]*#.*$'|cut
-f1`; do
lockf ${STR} newsyslog.sh ${STR}
done
This is _advisory_ lock, not _mandatory_. Syslogd could write to the
file happily while `your_command' is running or/and between `your_command'
and newsyslog.
Maybe this is a little closer (not tested):
kill -17 syslogd pid; my_scrypt; newsyslog; kill -19 syslogd pid
Ie.: STOP syslogd; run the script(s); rotate logs; CONTinue syslogd.
But if there is to much logging between the two signals, then messages could
be lost.
-andrew
The newsyslog.sh should contain:
#!/bin/sh
your_command ${1}
newsyslog ${1}
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run command on logfile before it's rotated
I've got my system set up to rotate the maillog every day at midnight. What do i do if i want to run a command on the logfile just before it's rotated ? /thomas -- Thomas von Hassel DarX @ irc darxmac @ AIM/iChat Powered by inkwell...! To Unsubscribe: send mail to [EMAIL PROTECTED] with unsubscribe freebsd-questions in the body of the message
Re: run command on logfile before it's rotated
In the last episode (Dec 04), Thomas von Hassel said: I've got my system set up to rotate the maillog every day at midnight. What do i do if i want to run a command on the logfile just before it's rotated ? Run it via cron at 11:59? newsyslog can notify a process (via a signal) after it has rotated the log, but not before. -- Dan Nelson [EMAIL PROTECTED] To Unsubscribe: send mail to [EMAIL PROTECTED] with unsubscribe freebsd-questions in the body of the message
Re: run command on logfile before it's rotated
On Thu, 2002-12-05 at 01:02, Nathan Kinkade wrote:
On Wed, Dec 04, 2002 at 10:51:43PM +0100, Thomas von Hassel wrote:
I've got my system set up to rotate the maillog every day at midnight.
What do i do if i want to run a command on the logfile just before it's
rotated ?
/thomas
--
Thomas von Hassel
DarX @ irc
darxmac @ AIM/iChat
Powered by inkwell...!
How about just setting a cron job to run some reasonable period prior
to newsyslog being run?
It's incorrect way to do things, because some entries could be added to
syslog _after_ the command is run, but _before_ newsyslog. Instead you
should call some script via cron with crontab entry like this:
# rotate log files every hour, if necessary
0 * * * * root/usr/bin/lock_script.sh
And the script must contain something like:
#!/bin/sh
for $STR in `cat /etc/newsyslog.conf |grep -v '^[:space:]*#.*$'|cut
-f1`; do
lockf ${STR} newsyslog.sh ${STR}
done
The newsyslog.sh should contain:
#!/bin/sh
your_command ${1}
newsyslog ${1}
Nathan
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Regards,
Sergey
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