lwatch.conf(5)
NAME
lwatch.conf -- configuration file for lwatch(1), syntax highlighting
for syslog/syslog-ng file
DESCRIPTION
- Default configuration file for lwatch is /etc/lwatch/lwatch.conf
(built-in value), but you can specify another file with -C command line
option. Read lwatch(1) for details.
- Comments
- Everything from # (hash) to end of line is a comment.
- General options
- cfg_ver - this is obligatory variable and it must be placed as the first option in config file. This variable contains version of configuration file syntax. Current manual describes version 1.
- rule_action - after successful matching rule lwatch tries to match next one. You can choose to exit after executing matching rule changing this parameter from continue (that's the default) to exit. You can override this global parameter for each rule. See section Actions and modificators.
- use_syslog - if set to yes some messages will be logged through syslog, default is yes
- log_level - how verbose log messages should produce lwatch
- date_color - default color of date part
- host_color - default color of hostname part
- serv_color - default color of service part
- mesg_color - default color of message part
- input_file - where lwatch is reading data from, built-in default is /var/lib/lwatch/syslog.fifo, could be overwritten with command line option -i
- output_file - where lwatch output colored data; built-in default is stdout (-), could be overwritten with command line option -o
- show_unparsed - by default lwatch ignores lines which cannot be splitted into date, host, service and message, set this variable to yes if you would like to see those lines; it is the same as command line option -s
- Available colors
- To specify color you can use following strings: black, red, green, brown, blue, magenta, cyan, lightgray, darkgray, brightred, brightgreen, yellow, brightblue, purple, brightcyan, white.
- Matching patterns
- There The True Power of Lwatch is hidden. You can match input lines against PCRE (Perl Compatible Regular Expression) and change output depends on matching. You can read more about PCRE in pcrepattern(3) (from libpcre) or in perlre(1) (from perl).
- There are two ways to define matching pattern/action. First one is the simple one. Just pattern and one action:
- /regexp/ action
- The second one is more complex, but it allows to specify more than one action or modificator with one pattern:
- /regexp/ {
action1
action2
...
actionN - }
- There is one important thing you should remember. There is no need to quote / (slash) if you use it inside regexp pattern. For example:
- //USR/SBIN/CRON/ { # cron's messages are not important
color=blue # display it in blue
match_service - }
- Actions and modificators
- date_color - set date color
- mesg_color, color - set message color
- serv_color - set service name color
- host_color - set hostname color
- ignore - ignore this pattern, do not match next patterns
- exit - do not match next patterns when rule_action is set to continue, in other case it is superfluous
- continue - continue with next pattern when rule_action is set to exit, in other case it is superfluous; please note, that if ignore> is used in the same action it takes a priority - it makes no sense to match other rules for string that has been ignored
- highlight - highlight matched string with given color (see NOTES)
- match_host - match hostname insted message
- match_service - match service name instead message
NOTES
highlight action changes the matched text. That's why the following
part of configuration wont work:
/root/ highlight=brown
/session closed for user root/ ignore
when
(pam_unix) session closed for user root
would appear as an input line.
First rule changes the text to:
(pam_unix) session closed for user [BROWN]root[NORMAL]
where [BROWN] and [NORMAL] are control sequences to change color to
brown, then change it back to default color of this part. Of course
this line does not match the second rule and you can see it on the output.
- There are two possible workarounds:
- o put the ignore pattern before the highlight one
- o enhance your second rules like:
- /session closed for user .*root.*/ ignore
EXAMPLES
Just look into provided lwatch.conf.
COPYRIGHT
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2 of the License, or (at your
option) any later version.
Regular expression support is provided by the PCRE library package,
which is open source software, written by Philip Hazel, and copyright
by the University of Cambridge, England. This library is available at:
ftp://ftp.csx.cam.ac.uk/pub/software/programming/pcre/