分类：
2005-10-27 20:46:27
DIRECTORY DEFINITION
/usr：sharable operating system command,libraries,and documentation
/sbin：minimum commands needed to boot the system and mount other file systems
/opt ：applications
/etc：system configuration files.no longer contains executable files
/dev：device files
/var：dynamic information such as logs and spooler files
/mnt：local mounts
/tmp：operating system temporary files
/stand： kernel and boot loader
/home：user directories
/usr/bin：operating system user commands
/usr/conf：kernel configuration
/usr/contrib：unsupported contributed software
/usr/lbin：back-ends to other commands
/usr/local：user-contributed software
/usr/newconfig：default operating system configuration data files
/usr/sbin：system administration commands
/usr/share：architecture independent sharable files
/usr/share/man：operating system man pages
/usr/share/doc：release notes
/var/adm：common administrative files and log files
/var/adm/crash：kernel crash dumps
/var/mail：incoming mail
/var/opt：application-specific runtime files.each application will have its own directory
/var/spool：spooled files used by subsystems such as lp,cron,software distributor
/var/tmp ：temporary files generated by commands in the /usr hierarchy
/var/adm/cron：used for log files maintained by cron.cron is a subsystem that allows you to schedule processes to run at a specific time or at regular intervals
/var/adm/sw：used for log files maintained by the software distributor
/var/adm/syslog
/var/adm/sulog：this file contains a history of all invocations of the switch user command.sulog is an ASCII log file
/var/adm/wtmp：this file contains a history of successful logins. this file is not ASCII. the last command is used to display this information. the wtmp file will continue to grow and should be trimmed by the administrator from time to time
/var/adm/btmp：this file contains a history of unsuccessful logins
/etc/utmp ：this file contains a record of all users logged onto the system. This file is used by commands such as write and who. this file is not an ASCII file and can not be directly viewed/opt/application/bin：user commands
/opt/application/share/man：man pages
/opt/application/lib：libraries
/opt/application/lbin：back end commands
/opt/application/newconfig：master copies of configuration files
