logwatch(8) -- Linux man page



logwatch - system log analyzer and reporter  


logwatch [--detail level ] [--logfile log-file-group ] [--service service-name ] [--print] [--mailto address ] [--archives] [--range range ] [--debug level ] [--save file-name ] [--logdir directory ] [--hostname hostname ] [--help|--usage]  


LogWatch is a customizable, pluggable log-monitoring system. It will go through your logs for a given period of time and make a report in the areas that you wish with the detail that you wish. Easy to use - works right out of the package on almost all systems.  


--detail level
This is the detail level of the report. level can be high, med, low.
--logfile log-file-group
This will force LogWatch to process only the set of logfiles defined by log-file-group (i.e. messages, xferlog, ...). LogWatch will therefore process all services that use those logfiles. This option can be specified more than once to specify multiple logfile-groups.
--service service-name
This will force LogWatch to process only the service specified in service-name (i.e. login, pam, identd, ...). LogWatch will therefore also process any log-file-groups necessary to process these services. This option can be specified more than once to specify multiple services to process. A useful service-name is All which will process all services (and logfile-groups) for which you have filters installed.
Print the results to stdout (i.e. the screen).
--mailto address
Mail the results to the email address or user specified in address.
Each log-file-group has basic logfiles (i.e. /var/log/messages) as well as archives (i.e. /var/log/messages.? or /var/log/messages.?.gz). This option will make LogWatch search through the archives in addition to the regular logfiles. The entries must still be in the proper date range (see below) to be processed, however.
--range range
You can specify a date-range to process. This option is currently limited to only Yesterday, Today and All.
--debug level
For debugging purposes. level can range from 0 to 100. This will really clutter up your output. You probably don't want to use this.
--save file-name
Save the output to file-name instead of displaying or mailing it.
--logdir directory
Look in directory for log files instead of the default directory.
--hostname hostname
Use hostname for the reports instead of this system's hostname. In addition, if HostLimit is set in /etc/log.d/logwatch.conf, then only logs from this hostname will be processed (where appropriate).
Displays usage information
same as --usage.


Really a symlink to /etc/log.d/conf/logwatch.conf. This file sets the default values of all the above options. These defaults are used when LogWatch is called without any parameters (i.e. from cron.daily). The file is well-documented, but the explanations above also apply to this config file.
Configuration files for the various services whose log entries LogWatch can process.
Configuration files for the various logfiles that the above service's log entries are stored in.
Filters common to many services and/or logfiles.
Filters specific to just particular logfiles.
Actual filter programs for the various services.


logwatch --service ftpd-xferlog --range all --detail high --print --archives
This will print out all FTP transfers that are stored in all current and archived xferlogs.
logwatch --service pam_pwdb --range yesterday --detail high --print
This will print out login information for the previous day...


For information on adding your own filter, please see the file HOWTO-Make-Filter which should have been included with Logwatch. If you installed from an RPM, it is probably under /usr/share/doc/logwatch-XXX.  


The --range option is very weak... this will be fixed in the future.  


Kirk Bauer <kirk@kaybee.org>