Linux常用命令全称
pwd：print work directory 打印当前目录 显示出当前工作目录的绝对路径
ps： process status(进程状态，任务管理器) 常用参数：－auxf
ps -auxf 显示进程状态
df： disk free 其功能是显示磁盘可用空间数目信息及空间结点信息。
du：Disk usage
rpm：即RedHat Package Management
rmdir：Remove Directory（删除目录）
rm：Remove（删除目录或文件）
cat： concatenate 连锁
cat file1 file2>>file3 把文件1和文件2的内容联合起来放到file3中
insmod： install module,载入模块
ln -s ： link -soft 创建一个软链接，相当于创建一个快捷方式
mkdir：Make Directory(创建目录)
su：Swith user(切换用户)
cd：Change directory
ls：List files
ps：Process Status
mkdir：Make directory
rmdir：Remove directory
uname： Unix name
lsmod： List modules
mv： Move file
rm： Remove file
cp： Copy file
ln： Link files
fg： Foreground
bg： Background
chown： Change owner
chgrp： Change group
chmod： Change mode
tar：Tape archive （磁带档案）
文件结尾的"rc"（如.bashrc、.xinitrc等）：Resource configuration
Knnxxx /Snnxxx（位于rcx.d目录下）：K（Kill）；S(Service)；nn（执行顺序号）；xxx（服务标识）
.a（扩展名a）：Archive，static library
.so（扩展名so）：Shared object，dynamically linked library
.o（扩展名o）：Object file，complied result of C/C++ source file
RPM：Red hat package manager
dpkg：Debian package manager
apt：Advanced package tool（Debian或基于Debian的发行版中提供）
部分Linux命令缩写
bin = Binaries (二进制文件)
/dev = Devices (设备)
/etc = Etcetera (等等)
/lib = LIBrary
/proc = Processes
/sbin = Superuser Binaries (超级用户的二进制文件)
/tmp = Temporary (临时)
/usr = Unix Shared Resources
/var = Variable (变量)
FIFO = First In, First Out
SQL = Structured QueryLanguage
PHP = Personal Home Page Tools = PHP HypertextPreprocessor
PS = Prompt String
Perl = "Pratical Extraction and Report Language"(实际的抽取和报告语言) ="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
cal = Calendar (日历)
cat = Catenate (链接)
cd = Change Directory
chgrp = Change Group
chmod = Change Mode
chown = Change Owner
chsh = Change Shell
cmp = compare
cobra = Common Object Request BrokerArchitecture
comm = common
cp = Copy
cpio = CoPy In and Out
cpp = C Pre Processor
cups = Common Unix Printing System
cvs = Current Version System
daemon = Disk And Execution MONitor
dc = Desk Calculator
dd = Disk Dump (磁盘转储)
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 (执行)
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
ksh = Korn SHell
lame = Lame Ain't an MP3 Encoder
lex = LEXical analyser
lisp = LISt Processing = Lots of IrritatingSuperfluous 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
passwd = Passwd
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
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 PackageManager
rsh, rlogin, rvim中的r = Remote
sed = Stream Editor
seq = SEQuence
shar = Shell ARchive
ssh = Secure Shell
ssl = Secure Sockets Layer
stty = Set TTY
su = Substitute User
svn = SubVersion
tar = Tape ARchive
telnet = TEminaL over Network
tty = TeleTypewriter
umask = User's MASK
vim = Vi IMproved
su = Switch User