04-30-2020
Could you store a 'previous last line' value somewhere to use between runs? That way you could:-
- Copy the log file to a temporary directory (to get a fixed file to work with)
- Read the 'previous last line' value from your stored location
- Count the lines in your copied file.
- If the count is lower, you have rotated the log file, so set the 'previous last line' value to zero to read the whole file.
- If the count was larger, read from the 'previous last line' value to the end of the file looking for the error message being logged.
- Store the new 'last line' value in a file somewhere for the next run.
- Tidy up your temporary file/directory.
Would that logic work for you?
Let us know if that helps, is totally wrong or if you get stuck.
I hope that this helps,
Robin
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LEARN ABOUT OPENSOLARIS
grablogs.conf
grablogs.conf(4) File Formats grablogs.conf(4)
NAME
grablogs.conf - grablogs configuration for libgrablogs.so of the plugins of
gnome-system-log file
SYNOPSIS
/usr/lib/gnome-system-log/plugins/grablogs.conf
DESCRIPTION
The libgrablogs.so is a plugin for gnome-system-log(1), it colloct the log files from the system as many as possible. grablogs.conf is a
configuration file that contains a set of lines mixed with sh(1) syntax codes and individual
log files. libgrablogs.so will read the file try to get a log files list for
gnome-system-log(1). Users can copy the file into $HOME/.gnome2/gnome-system-log/plugins/`uname -p` to overwrite the system default one.
The grablogs.conf file contains the following configuration categories:
[configs]
Each line under this category is interpreted as a config file of System. The plugin will open the config file and try to find
all system paths of the logs.
[commands]
Each line under this category is interpreted as a shell command and will be execute through a pipe. And each line of the out-
put of the command will be interpreted as a log path.
[logs] Each line under this category is interpreted as a log path.
FILES
/usr/lib/gnome-system-log/plugins/grablogs.conf
The system default configuration file for the plugin libgrablogs.so
$HOME/.gnome2/gnome-system-log/plugins/`uname -p`/grablogs.conf
The user specific configuration file for the plugin libgrablogs.so
EMAMPLE
[configs]
/etc/syslog.conf
[commands]
for i in `svcs -aH -o FMRI | grep -v lrc `; do svcprop -p restarter/logfile $i 2>/dev/null || svcprop -q -p restarter/alt_logfile $i
2>/dev/null ; done
[logs]
/var/log/messages
/var/log/secure
/var/log/maillog
/var/log/cron
/var/log/Xorg.0.log
/var/log/XFree86.0.log
/var/log/auth.log
/var/log/cups/error_log
SEE ALSO
gnome-system-log(1), pipelog.conf(1)
gnome-utils 2.16.0 13 Oct 2006 grablogs.conf(4)