/usr/bin

The LP print service user commands 

/etc/lp

A hierarchy of LP server configuration files 

/usr/share/lib

The terminfo database directory

/usr/lib/print

The lp conversion scripts, in.lpd daemon and the printd daemon. The printd daemon transfers all pending jobs in the/var/spool/print directory once per minute. When there are no jobs remaining to transfer, it exits

/usr/sbin

The LP print service administrative commands 

/usr/lib/lp

The LP daemons; directories for binary files and PostScript filters; and the model directory (which contains the standard printer interface program)

/var/lp/logs

The logs for LP activities: lpsched.n – Messages from lpsched and requests.n – Information about completed print requests

/var/spool/lp

The spooling directory where files are queued for printing 

/var/spool/print

The LP print service client-side request staging area