Default Directories for root (/) and /usr File Systems

Directories in the root (/) file system:

/

Root of the overall file system name space 

/dev

Primary location for special files 

/dev/dsk

Block disk devices 

/dev/pts

pty slave devices

/dev/rdsk

Raw disk devices 

/dev/rmt

Raw tape devices 

/dev/sad

Entry points for the STREAMS Administrative Driver 

/dev/term

Terminal devices 

/etc

Host-specific system administrative configuration files and databases 

/etc/acct

Accounting system configuration information 

/etc/cron.d

Configuration information for cron

/etc/default

Defaults information for various programs 

/etc/dfs

Configuration information for exported file systems 

/etc/fs

Binaries organized by file system types for operations required before /usr is mounted.

/etc/inet

Configuration files for Internet services 

/etc/init.d

Scripts for changing between run levels 

/etc/lp

Configuration information for the printer subsystem 

/etc/mail

Mail subsystem configuration 

/etc/net

Configuration information for TI (transport- independent) network services 

/etc/opt

Configuration information for optional packages 

/etc/rc0.d

Scripts for entering/leaving run level 0 

/etc/rc1.d

Scripts for entering/leaving run level 1 

/etc/rc2.d

Scripts for entering/leaving run level 2 

/etc/rc3.d

Scripts for entering/leaving run level 3 

/etc/rcS.d

Scripts for bringing the system up in single user mode 

/etc/saf

Service access facility files (including FIFOs) 

/etc/skel

Default profile scripts for new user accounts 

/etc/sm

Status monitor information 

/etc/sm.bak

Backup copy of status monitor information 

/etc/tm

Trademark files; contents displayed at boot time 

/etc/uucp

uucp configuration information

/export

Default root of the exported file system tree 

/home

Default root of a subtree for user directories 

/kernel

Subtree of platform-independent loadable kernel modules required as part of the boot process. It includes the generic part of the core kernel that is platform independent, /kernel/genunix. See Table 32-2 for the /platform and /usr/platform directory structure.

/mnt

Convenient, temporary mount point for file systems 

/opt

Root of a subtree for add-on application packages 

/opt/SUNWspro

Mount/installation point for unbundled language products 

/sbin

Essential executables used in the booting process and in manual system failure recovery 

/stand

Standalone programs 

/tmp

Temporary files; cleared during boot sequence 

/usr

Mount point for /usr file system

/var

Root of a subtree of varying files 

/var/adm

System logging and accounting files 

/var/crash

Default depository for kernel crash dumps 

/var/cron

cron's log file

/var/lp

Line printer subsystem logging information  

/var/mail

Directory where users' mail is kept 

/var/news

Community service messages (note: not the same as USENET-style news)

/var/nis

NIS+ databases 

/var/opt

Root of a subtree for varying files associated with software packages 

/var/preserve

Backup files for vi and ex

/var/sadm

Databases maintained by the software package management utilities 

/var/saf

saf (service access facility) logging and accounting files

/var/spool

Directories for spooled temporary files 

/var/spool/cron

cron and at spool files

/var/spool/locks

Spooling lock files 

/var/spool/lp

Line printer spool files 

/var/spool/mqueue

Mail queued for delivery 

/var/spool/pkg

Spooled packages 

/var/spool/uucp

Queued uucp jobs

/var/spool/uucppublic

Files deposited by uucp

/var/tmp

Directory for temporary files; not cleared during boot sequence 

/var/uucp

uucp log and status files

/var/yp

NIS databases (for backwards compatibility with NIS and unnecessary after full transition to NIS+) 

Directories in the /usr file system

bin

Location for standard system commands 

demo

Demo programs and data 

games

An empty directory, which is a remnant of the SunOS 4.0/4.1 software 

include

Header files (for C programs, etc.) 

kernel

Additional modules 

kvm

Implementation architecture-specific binaries and libraries 

lib

Various program libraries, architecture-dependent databases, and binaries not invoked directly by the user 

lib/acct

Accounting scripts and binaries 

lib/class

Scheduling class-specific directories containing executables for priocntl and dispadmin commands

lib/font

troff font description files

lib/fs

File system type-dependent modules; not invoked directly by the user 

lib/iconv

Conversion tables for iconv(1)

lib/libp

Profiled libraries 

lib/locale

Internationalization localization databases 

lib/lp

Line printer subsystem databases and back-end executables 

lib/mail

Auxiliary programs for the mail subsystem

lib/netsvc

Internet network services 

lib/nfs

Auxiliary programs and daemons related to NFS 

lib/pics

PIC archives needed to build the run-time linker 

lib/refer

Auxiliary refer-related programs 

lib/sa

Scripts and commands for the system activity report package 

lib/saf

Auxiliary programs and daemons related to the service access facility 

lib/sparcv9

64-bit Solaris libraries 

lib/uucp

Auxiliary uucp-related programs and daemons

lib/zoneinfo

Time zone information 

local

Commands local to a site 

old

Programs that are being phased out 

openwin

Mount/installation point for OpenWindows software 

sadm

Various files and directories related to system administration; see specifics below 

sadm/bin

"valtools" binaries for use by FMLI scripts 

sadm/install

Executables and scripts for pkg management

sbin

Executables for system administration 

sbin/static

Statically linked version of selected programs from /usr/bin and /usr/sbin

share

Architecture-independent sharable files 

share/lib

Architecture-independent databases 

share/lib/keytables

Keyboard layout description tables 

share/lib/mailx

mailx-related help files

share/lib/nterm

nroff terminal tables

share/lib/pub

Various data files 

share/lib/spell

Auxiliary spell-related databases and scripts

share/lib/tabset

Tab setting escape sequences 

share/lib/terminfo

terminfo-style terminal description files

share/lib/tmac

[nt]roff macro packages

share/src

Source code for kernel, libraries, and utilities 

ucb

Berkeley compatibility package binaries 

ucbinclude

Berkeley compatibility package header files 

ucblib

Berkeley compatibility package libraries