Date: Thu, 22 Apr 1999 09:34:21 -0700 From: "Ronald F. Guilmette" <rfg@monkeys.com> To: questions@freebsd.org Subject: Two questions about newsyslog(8) Message-ID: <29748.924798861@monkeys.com>
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I have a couple of system log files that would benefit from the magic
performed by newsyslog(8), however I am concerned about trying to
employ this program on these specific log files, because the man page
for newsyslog(8) is not clear about a few important details of what
this program actually does. Specifically:
#1) When the current log file is being archived, is that current log
file (simply renamed and then gzipped), or are its current contents
copied first to `logfile.0', followed by truncation to zero length
of the existing `logfile' file?
(The answer to this question may perhaps make a BIG difference as
to whether I can use newsyslog(8) or not on the specific log files
I am concerned about. If it just tries to rename `logfile' to
`logfile.0' and if the daemon process that is writing the log file
is just holding `logfile' continuously open, then this may perhaps
not produce the desited results.)
#2) The man page for newsyslog(8) says that it will send a signal
to the daemon process that is writing the log file. But when exactly
will it do this? What I mean is: Does newsyslog(8) send the signal
to the daemon process just after it makes a copy of (or just after
it renames) the current log file? Is the assumption then that this
signal should cause the daemon to close the current logfile and open
a new one having the original (pre-archiving) filename?
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