Red Hat ENTERPRISE LINUX 3 Reference Manual page 45

Chapter 3. File System Structure
Large packages that encompass many different sub-packages, each of which accomplish a particular
task, are also located in the
way, our package may have different tools that each go in their own sub-directories, such as
sample
/opt/sample/tool1/
and other similar directories.
3.2.1.7. The
/proc/
The directory contains special files that either extract information from or send information
/proc/
to the kernel.
Due to the great variety of data available within
used to communicate with the kernel, an entire chapter has been devoted to the subject. For more
information, please refer to Chapter 5 The
3.2.1.8. The
/sbin/
The directory stores executables used by the root user. The executables in
/sbin/
used at boot time and perform system recovery operations. Of this directory, the FHS says:
contains binaries essential for booting, restoring, recovering, and/or repairing the system in addition
/sbin
to the binaries in
/bin
lems) are generally placed into
placed into
/usr/local/sbin
At a minimum, the following programs should be in
, ,
arp clock
, ,
halt init
,
fsck.* grub
, ,
ifconfig lilo
, ,
mingetty mkfs.*
, ,
mkswap reboot
, ,
route shutdown
,
swapoff swapon
3.2.1.9. The
/usr/
The directory is for files that can be shared across multiple machines. The
/usr/
often on its own partition and is mounted read-only. At minimum, the following directories should be
subdirectories of
/usr/
/usr
|- bin/
|- dict/
|- doc/
|- etc/
|- games/
|- include/
|- kerberos/
|- lib/
|- libexec/
|- local/
|- sbin/
directory, giving that large package a way to organize itself. In this
/opt/
and
/opt/sample/tool2/
Directory
Directory
. Programs executed after
/usr/sbin
.
Directory
:
, each of which can have their own
and the many ways this directory can be
/proc/
File System.
proc
is known to be mounted (when there are no prob-
/usr/
. Locally-installed system administration programs should be
:
/sbin/
27
, ,
bin/ man/
are only
/sbin/
directory is
/usr/