logwatch - system log analyzer and reporter
logwatch [--detail level ] [--logfile log-file-group
] [--service service-name ] [--mailto address ]
[--archives] [--range range ] [--debug level ]
[--filename file-name ] [--logdir directory ]
[--hostlimit hosts ] [--hostname hostname ]
[--html_wrap number of characters ] [--hostformat host
based options ] [--output output-type ] [--format
report format ] [--encode encoding to use ]
[--numeric] [--version] [--help|--usage]
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. Logwatch is being used for Linux
and many types of UNIX.
- --detail level
- This is the detail level of the report. level can be
a positive integer, or high, med, low, which correspond to the integers
10, 5, and 0, respectively.
- --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
- --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
- --mailto address
- Mail the results to the email address or user specified in
- --range range
- You can specify a date-range to process. Common ranges are
Yesterday, Today, All, and Help. Additional options are
listed when invoked with the Help parameter.
- 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). When used with "--range all", this
option will make Logwatch search through the archives in addition to the
regular logfiles. For other values of --range, Logwatch will search the
appropriate archived logs.
- --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.
- --filename file-name
- Save the output to file-name instead of displaying
or mailing it.
- --logdir directory
- Look in directory for log subdirectories or log
files first before looking in the default directories.
- --hostlimit host1,host2
- Limit report to hostname - host1, host2.
- --hostname hostname
- Use hostname for the reports instead of this
system's hostname. In addition, if HostLimit is set in the logwatch.conf
configuration file (see MORE INFORMATION, below), then only logs
from this hostname will be processed (where appropriate).
- --html_wrap num-characters
- Number of characters that html output should be wrapped to.
Default is 80.
- Inhibits additional name lookups, displaying IP addresses
- Displays usage information
- same as --usage.
This directory contains all the perl
executables and configuration files shipped with the logwatch
This directory contains local configuration
files that override the default configuration. See MORE INFORMATION
below for more information.
logwatch --service ftpd-xferlog --range all --detail high --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
This will print out login information for the
The directory /usr/share/doc/logwatch-* contains several files with additional
Documents the directory structure of Logwatch
configuration and executable files, and describes how to customize Logwatch by
overriding these default files.
Describes the License under which Logwatch is
distributed. Additional clauses may be specified in individual files.
Describes how to install, where to find it,
mailing lists, and other useful information.
Kirk Bauer <email@example.com> http://www.kaybee.org/~kirk