OSF

NAME

hier −  Layout of file systems

DESCRIPTION

This page describes the file system hierarchy.  As a general rule, it lists only directories. 

/The root directory of the file system

/dev/Block and character device files

/etc/System configuration files and databases.  These are are nonexecutable files. 

nls/National Language Support databases

/lost+found/
Files located by fsck

/opt/Optional application packages

/sbin/Commands essential for the system to boot.  These commands do not depend on shared libraries or the loader and can have other versions in /usr/bin or /usr/sbin. 

init.d/System state rc files

rc0.d/rc files executed for system-state 0

rc2.d/rc files executed for system-state 2

rc3.d/rc files executed for system-state 3

/stand/Standalone programs

/tmp/ System generated temporary files (the contents of /tmp are usually not preserved across a system reboot)

/usr/Contains the majority of user utilities and applications

bin/Common utilities and applications

ccs/C compilation system; tools and libraries used to generate C programs

bin/Development binaries (includes cc, ld, make, etc.) 

lib/Development libraries and backends

include/Program header (include) files; not all subdirectories are listed below

mach/Mach specific C include files

machine/Machine specific C include files

net/Miscellaneous network C include files

netimp/C include files for IMP protocols

netinet/C include files for Internet standard protocols

netns/C include files for XNS standard protocols

nfs/C include files for Network File System (NFS)

protocols/C include files for Berkeley service protocols

rpc/C include files for remote procedure calls

servers/C include files for servers

streams/C include files for Streams

sys/System C include files (kernel data structures)

tli/C include files for Transport Layer Interface

ufs/C include files for UFS

lbin/Back-end executables

spell/Spell back-end

lib/Consists of links to libraries located elsewhere (/usr/ccs/lib, /usr/lbin, /usr/share/lib, /X11/lib), and includes

uucp/UUCP programs

sbin/System administration utilities and system utilities

share/Architecture-independent ASCII text files

dict/Word lists

lib/

me/Macros for use with the ME macro package

ms/Macros for use with the MS macro package

tabset/Tab description files for a variety of terminals; used in /etc/termcap

terminfo/Terminal information database

tmac/Text processing macros

man/Online reference pages:

man1/Source for user command reference pages

man2/Source for system call reference pages

man3/Source for library routine reference pages

man4/Source for file format reference pages

man5/Source for miscellaneous reference pages

man7/Source for device reference pages

man8/Source for administrator command reference pages

cat1-8Formatted versions of reference pages in the man1 through man8 directories

shlib/Binary loadable shared libraries; shared versions of libraries in /usr/ccs/lib

/var/Multipurpose log, temporary, transient, varying, and spool files, including:

adm/Common administrative files and databases

crash/For saving kernel crash dumps

cron/Files used by cron

sendmail/sendmail configuration and database files

syslog/Files generated by syslog

spool/ Miscellaneous printer and mail system spooling directories, including:

lpd/Line printer spooling directories

mail/Incoming mail messages

mqueue/Undelivered mail queue

uucp/UUCP spool directory

tmp/Application-generated temporary files that are kept between system reboots

run/Files created when daemons are running

/vmunixPure kernel executable (the operating system loaded into memory at boot time)

RELATED INFORMATION

Commands: ls(1), apropos(1), whatis(1), whereis(1), finger(1), which(1), find(1), grep(1), fsck(8)