*** UNIX MANUAL PAGE BROWSER ***

hier(5) File Formats Manual hier(5) 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 Block and character device files System configuration files and databases. These are nonexecutable files. National Language Support databases Files located by fsck Optional application packages Commands essential for the system to boot. These commands do not depend on shared li- braries or the loader and can have other versions in /usr/bin or /usr/sbin. System state rc files rc files executed for system-state 0 rc files executed for system-state 2 rc files executed for system-state 3 Standalone programs System generated temporary files (the contents of /tmp are usually not preserved across a system reboot) Contains the ma- jority of user utilities and applications Common utilities and applica- tions C compilation system; tools and libraries used to generate C pro- grams Development binaries (includes cc, ld, make, etc.) Development libraries and backends Program header (include) files; not all subdi- rectories are listed below Mach specific C include files Machine spe- cific C include files Miscellaneous network C include files C include files for IMP protocols C include files for Internet standard protocols C include files for XNS standard protocols C include files for Network File System (NFS) C include files for Berkeley service protocols C in- clude files for remote procedure calls C include files for servers C include files for Streams System C include files (kernel data struc- tures) C include files for Transport Layer Interface C include files for UFS Back-end executables Spell back-end Consists of links to li- braries located elsewhere (/usr/ccs/lib, /usr/lbin, /usr/share/lib, /X11/lib), and includes UUCP programs System administration utilities and system utilities Architecture-independent ASCII text files Word lists Macros for use with the ME macro package Macros for use with the MS macro package Tab description files for a variety of terminals; used in /etc/termcap Terminal information database Text processing macros Online reference pages: Source for user command reference pages Source for system call reference pages Source for library routine reference pages Source for file format reference pages Source for miscellaneous reference pages Source for device reference pages Source for adminis- trator command reference pages Formatted versions of reference pages in the man1 through man8 directories Binary loadable shared libraries; shared versions of libraries in /usr/ccs/lib Multipurpose log, tempo- rary, transient, varying, and spool files, including: Common adminis- trative files and databases For saving kernel crash dumps Files used by cron sendmail configuration and database files Files generated by sys- log Miscellaneous printer and mail system spooling directories, includ- ing: Line printer spooling directories Incoming mail messages Undeliv- ered mail queue UUCP spool directory Application-generated temporary files that are kept between system reboots Files created when daemons are running Pure kernel executable (the operating system loaded into memory at boot time) SEE ALSO Commands: ls(1), apropos(1), whatis(1), whereis(1), finger(1), which(1), find(1), grep(1), fsck(8) hier(5)