/var/log : Log files and directories

This directory contains miscellaneous log files. Most logs must be written to this directory or an appropriate subdirectory.

The following files, or symbolic links to files, must be in /var/log, if the corresponding subsystem is installed:

File	Description
`lastlog`	record of last login of each user
`messages`	system messages from `syslogd`
`wtmp`	record of all logins and logouts