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Truncate Log files

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Old 11-14-2009

Sed on Solaris doesn't support -i - that's far too modern! Come to think of it, I don't think any / many UNIX's support it. And --help doesn't work either.

Perhaps you could use the original solution, but use cp instead of mv:
tail -b number_of_ blocks_to_save /var/adm/messages > /var/tmp/messages  
cp /var/tmp/messages /var/adm/messages && rm /var/tmp/messages

(the file will retain its inode number and permissions, unlike with mv)

Or truncate the file using
> /var/adm/messages

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grablogs.conf(4)						   File Formats 						  grablogs.conf(4)

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)

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