（注：来源于网络，整理以便查询。）
学习linux命令行的过程中，如果知道英文全称，会方便理解和记忆~~
/bin BINaries
/dev DEVices
/etc ETCetera
/lib LIBrary
/proc PROCesses
/sbin Superuser BINaries
/tmp TeMPorary
/usr Unix Shared Resources
/var VARiable ?
FIFO First In, First Out
GRUB GRand Unified Bootloader
IFS Internal Field Seperators
LILO LInux LOader
MySQL My是最初作者女儿的名字，SQL Structured Query Language
PHP Personal Home Page Tools PHP Hypertext Preprocessor
PS Prompt String
Perl "Pratical Extraction and Report Language" "Pathologically Eclectic Rubbish Lister"
Python 得名于电视剧Monty Python's Flying Circus
Tcl Tool Command Language
Tk ToolKit
VT Video Terminal
YaST Yet Another Setup Tool
apache "a patchy" server
apt Advanced Packaging Tool
ar archiver
as assembler
awk "Aho Weiberger and Kernighan" 三个作者的姓的第一个字母
bash Bourne Again SHell
bc Basic (Better) Calculator
bg BackGround
biff 作者Heidi Stettner在U.C.Berkely养的一条狗,喜欢对邮递员汪汪叫。
cal CALendar
cat CATenate
cd Change Directory
chgrp CHange GRouP
chmod CHange MODe
chown CHange OWNer
chsh CHange SHell
cmp compare
cobra Common Object Request Broker Architecture
comm common
cp CoPy
cpio CoPy In and Out
cpp C Pre Processor
cron Chronos 希腊文时间
cups Common Unix Printing System
cvs Current Version System
daemon Disk And Execution MONitor
dc Desk Calculator
dd Disk Dump
df Disk Free
diff DIFFerence
dmesg diagnostic message
du Disk Usage
ed editor
egrep Extended GREP
elf Extensible Linking Format
elm ELectronic Mail
emacs Editor MACroS
eval EVALuate
ex EXtended
exec EXECute
fd file descriptors
fg ForeGround
fgrep Fixed GREP
fmt format
fsck File System ChecK
fstab FileSystem TABle
fvwm F*** Virtual Window Manager
gawk GNU AWK
gpg GNU Privacy Guard
groff GNU troff
hal Hardware Abstraction Layer
joe Joe's Own Editor
ksh Korn SHell
lame Lame Ain't an MP3 Encoder
lex LEXical analyser
lisp LISt Processing Lots of Irritating Superfluous Parentheses
ln LiNk
lpr Line PRint
ls list
lsof LiSt Open Files
m4 Macro processor Version 4
man MANual pages
mawk Mike Brennan's AWK
mc Midnight Commander
mkfs MaKe FileSystem
mknod MaKe NODe
motd Message of The Day
mozilla MOsaic GodZILLa
mtab Mount TABle
mv MoVe
nano Nano's ANOther editor
nawk New AWK
nl Number of Lines
nm names
nohup No HangUP
nroff New ROFF
od Octal Dump
passwd PASSWorD
pg pager
pico PIne's message COmposition editor
pine "Program for Internet News & Email" "Pine is not Elm"
ping 拟声 又 Packet InterNet Grouper
pirntcap PRINTer CAPability
popd POP Directory
pr pre
printf PRINT Formatted
ps Processes Status
pty pseudo tty
pushd PUSH Directory
pwd Print Working Directory
rc runcom run command, rc还是plan9的shell
rev REVerse
rm ReMove
rn Read News
roff RunOFF
rpm RPM Package Manager RedHat Package Manager
rsh, rlogin, rvim中的r Remote
rxvt ouR XVT
sed Stream EDitor
seq SEQuence
shar SHell ARchive
slrn S-Lang rn
ssh Secure SHell
ssl Secure Sockets Layer
stty Set TTY
su Substitute User
svn SubVersioN
tar Tape ARchive
tcsh TENEX C shell
tee T (T形水管接口)
telnet TEminaL over Network
termcap terminal capability
terminfo terminal information
tex τέχνη的缩写，希腊文art
tr traslate
troff Typesetter new ROFF
tsort Topological SORT
tty TeleTypewriter
twm Tom's Window Manager
tz TimeZone
udev Userspace DEV
ulimit User's LIMIT
umask User's MASK
uniq UNIQue
vi VIsual Very Inconvenient
vim Vi IMproved
wall write all
wc Word Count
wine WINE Is Not an Emulator
xargs eXtended ARGuments
xdm X Display Manager
xlfd X Logical Font Description
xmms X Multimedia System
xrdb X Resources DataBase
xwd X Window Dump
yacc yet another compiler compiler