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Top Forums Shell Programming and Scripting cron script to rotate log files Post 302306936 by pludi on Tuesday 14th of April 2009 09:01:34 AM
Old 04-14-2009
These look like something generated by cron or similar:
  • daily_out.log
  • monthly.out
  • weekly.out
This is used by the login management system and should never be rotated or otherwise modified manually:
  • lastlog
Probably used by the UI and/or for support issues:
  • windowserver.log
  • SerialNumberSupport.log
  • crashreporter.log
Probably generated by a script:
  • rsync_backup.log
No clue:
  • asl.log
  • servermgrd.log
  • ppp.log
  • secure.log

Quote:
Originally Posted by timgolding
[...]
How can i find out which process has a handle open to that log file? If i can find out which deamon uses which log I can at least research into what the mechanism might be for each one?
Just look through the config files for the daemons you're using to check what files they're writing to. And the mechanism needed is usually noted in the man page (or other shipped documentation). If there's no explicit information about signal involved, better play it save and just restart the daemon.

Last edited by pludi; 04-14-2009 at 10:02 AM.. Reason: Better readability
 

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FSCK-LARCH(1)						      General Commands Manual						     FSCK-LARCH(1)

NAME
fsck-larch - verify that a larch B-tree is internally consistent SYNOPSIS
fsck-larch [--config=FILE] [--dump-config] [--dump-memory-profile=METHOD] [--dump-setting-names] [--fix] [--generate-manpage=TEMPLATE] [-h] [--help] [--list-config-files] [--log=FILE] [--log-keep=N] [--log-level=LEVEL] [--log-max=SIZE] [--log-mode=MODE] [--no-default-configs] [--output=FILE] [--trace=PATTERN] [--version] [FILE]... DESCRIPTION
fsck-larch reads an on-disk, committed B-tree created by the larch Python library, and verifies that it is internally consistent. It re- ports any problems it finds, but does not currently fix them. OPTIONS
--config=FILE add FILE to config files --dump-config write out the entire current configuration --dump-memory-profile=METHOD make memory profiling dumps using METHOD, which is one of: none, simple, meliae, or heapy (default: simple) --dump-setting-names write out all names of settings and quit --fix fix problems found? --generate-manpage=TEMPLATE fill in manual page TEMPLATE -h, --help show this help message and exit --list-config-files list all possible config files --log=FILE write log entries to FILE (default is to not write log files at all); use "syslog" to log to system log, or "none" to disable log- ging --log-keep=N keep last N logs (10) --log-level=LEVEL log at LEVEL, one of debug, info, warning, error, critical, fatal (default: debug) --log-max=SIZE rotate logs larger than SIZE, zero for never (default: 0) --log-mode=MODE set permissions of new log files to MODE (octal; default 0600) --no-default-configs clear list of configuration files to read --output=FILE write output to FILE, instead of standard output --trace=PATTERN add PATTERN to trace patterns --version show program's version number and exit SEE ALSO
Larch home page (http://liw.fi/larch/). FSCK-LARCH(1)
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