Information Technology Reference
In-Depth Information
Summary
A
file system
is a logical collection of files and directories contained in a par-
tition. It can be treated as a single entity when making it available for use
(mounting), checking, and repairing. The three categories of file systems are
disk-based, memory-based, and network-based. Hard disks are of type UFS,
CD-ROMs are HSFS, DVDs are UDF, and floppy disks are PCFS.
Files can be regular, directory, link, block special, character special, door,
FIFO, or socket.
Links can be
hard
, which means they are used within the same file system, or
soft
(symbolic), which means they can be used across file systems.
Pseudo-file systems are memory-based file systems and provide faster access
to the data stored in them. The commonly seen pseudo-file systems are:
CacheFS
for local caching of data from remote file systems
➤
PROCFS
for accessing information about process status and information
➤
SWAPFS
for swap space
➤
TMPFS
for temporary files
➤
