per virtual host
split-logfile < logfile
This script will take a combined Web server access log file and break
its contents into separate files. It assumes that the first field of
each line is the virtual host identity (put there by "%v"), and that
the logfiles should be named that+".log" in the current directory.
The combined log file is read from stdin. Records read will be
appended to any existing log files.
split-logfile < /var/log/apache2/other_vhosts_access.log
Apache HTTP Server 2009-12-06 SPLIT-LOGFILE(8)
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