UNIX

1
UNIX
2
??????????????

• ???????????????????????????
• ??????????????????????????(Open System)
  ??????????????????????????????????????????????????
  ??????
• ??????????????????????????(Multi-users)
• ???????????????????????????????????????????
  (Multi-tasking)
• ??????????????????????????????????????
  ???????????? ???????????????

3
????????????????????

• Kernel
• Shell
• Utilities

H/W
4
Kernel

• ????????????????????????????? ?????????
• ????????????????????????????????????????????
• ?????????????????????
• ?????????????????
• ?????????????????????????????????????????
• Kernel ?????????????????????????
  ?????????????????????????????????

5
Shell (command Interpreter)

• ???????????????????????????????????????????????
  Kernel
• ??????????????????
• ??????????????????????????????????????????????????
  Shell script
• ???????????????????????? Input/Output

6
shell ??????????

• Bourne Shell ???????????????????? ALGOL
  ????????????????????????????
• C Shell ??????????????????????????????? C
• ????????????????????????????
• Korn Shell ?????????????????????????????????? ???
  Kernel ???????????????????????

7
File System

• ???????????????????????? (Hard Disk)
• ?????????????????????????(Files)
  ?????????????(directory)
• ?????????????????????????
• ??????????????????? ? ???????????????????????????

8
???????????????????????????

• System Administration
• ????????????????????????????? System
  Administration???????????
• User ID (UID) ????????????????????????
• Group ID (GID) ??? ??????????????????????
• Password ???????????

9
????????????????? UNIX

• ??????????? Telnet ??????????????????????????????
  ?????????????? ???? hw.compsci.buu.ac.th

Telnet hw.compsci.buu.ac.th
10
?????????????? UNIX
11
???????????????

• ???????????????????????? 6 ???
• ???????????????? ?????????????????????????? 1 ???
• ???????????????????????????????????????? 3 ???
• ???????????????????????? passwd

12
(No Transcript)
13
?????? Online Manual

• ????????? man
• ??????
• man Command
• ????????
• man ls

14
??????????????(logout)

• ???????????
• exit
• logout
• Ctrl - d

15
Unix File System
16
?????????????

• Regular File(-) ??????????????????????? Editor
  ?????????????????????? ???
• Directory (d) ??????????????????????? ? ????
  directory
• ???????????? / ??? root directory
• Character device file (c) ?????????????????
  ????????
• Block device file (b)
• UNIX domain sockets (s) ?????? BSD Unix
• Name pipes (p) ??? ATT
• Symbolic link (l)

17
??????????????????? directory

• ?????????????????????????????????
  ?????????????????????? ( ) , lt gt /
• ??????????????????????
• ??????????????????????????????????????????
• ????????????????????? Argument ???????????????????
  ?????????????? 225 ???

18
???????????????????????????? directory

• ???????????????????????? directory ???????????
  directory ??? directory ?????????????? /
  ???????????
• Absolute Path Name ??????????????????????????????
  directory ???? /unix, /usr/home/seree,
  /etc/passwd
• Relative Path Name ???????????????????????
  directory ??????????????????????????????????
• . (current directory)
• .. (parent directory)
• ./office (relative from current directory)
• ../office (relative from parent directory)

19
Home directory

• Home directory ???? directory ?????????????
• ?????????? seree
• home directory ??? /usr2/home/seree

20
??????????????????????

• clear ???????
• date ??????????
• logname ??????????????
• hostname ???????? Host
• cal ?????????????????????????????????
• cal 1997 ????????????. 1997
• cal 10 1997 ?????????? ??????????? ??. 1997

21
??????????????????????

• banner HELLO ??????????????????
• echo I Love You ??????????????????
• whoami ????????????????????????
• who am i ????????????????? ??????????????????
  ?????? ???????
• pwd ???????? directory ????????????????

22
?????????????????????? file ??? directory
23
?????? ls

• ??????????????????????????????????????????????
  ?????????????
• ?????? ls option filename
• option
• -a ??????????????????????????????????????
  ??????????????????????????????????? .??????????
  ????????????????? ???????
• -b ?????????????????????????????? ??????????
• -c ????????????????????
• -d ????????????????????????????????????
  ?????????????????

24
?????? ls (???)

• -f ?????????????????????? / ????????????????????
  ??? ?????????????? ?????????????????????????
• -l ????????????
• ????????
• ls
• ls -l
• ls -la
• ls -f

25
?????? cd (Change directory)

• ????????????????? ????? directory ??????????????
• ?????? cd directory_name
• ????????
• cd /usr2/home/seree
• cd ../seree
• cd
• cd ..

26
?????? cp

• ??????????????????????????????????????????????
  ??????????????? COPY ??????????????? DOS
• ?????? cp option source_filename
  dest_filename
• -i ????????????????????????????????????????
  ?????????????????????
• -p ????????????????????????????????????????
  ???????????
• -r ?????????????????????????????????????????? ???
  ???????????????????????? ? ????????????????
  ???????? ? ???????

27
?????? cp (???)

• ????????
• 1. ?????????
• cp letter letter.sav
• 2. ?????????????????????????? c ??????? directory
  ???? archives
• cp .c archives
• 3. ????????????? memo??? directory ????
  /home/seree ????? directory ????????
• cp /home/seree/memo .
• 4.????????????? memo ??? letter ????? directory
  ???? /home/jenny
• cp memo letter /home/jenney

28
?????? mkdir

• ?????????????? directory
• ??????
• mkdir directory_name
  directory_name
• ????????
• mkdir tutor

29
?????? rmdir

• ??????????? directory ??? directory
  ????????????????? directory ????
  ????????????????????????????????
• ??????
• rmdir directory_name
  directory_name
• ????????
• rmdir xyz

30
?????? rm

• ????????????????????? ??????????????????????????
  ????????
• ??????
• rm -i filename filename ...
• ????????
• rm data.txt
• rm -i report.txtt

31
?????? mv

• ??????????????????????? ????????????????????????
  ??????????
• ??????
• mv filename filename
• mv filename filename
  directory
• ????????
• mv data.txt demo.txt
• mv report.txt units

32
?????? w

• ??????w??????????????????????????????????????
  ???? ????????????????????????????
• ?????? w???????? user-account
• ????????
• bucc w
• 1030 am up 6 days, 1645, 3 users, load
  average 1.30 1.31 2.00
• User tty login_at_ idle
  JCPU PCPU what
• u3510011 pts/11 622am 1
  735 26 w

33
?????? who

• ????????????????????????????????????
  ??????????????????????????
• ??????
• who am I
• ????????
• who
• jenny tty01 Jul 25 1101
• alex tty11 Jul 25 1811

34
?????? finger

• ?????? finger ?????????????????
  ???????????????? ???? ??????????????????????????
• ?????? finger user-account _at_hostname...
• ????????
• 1. ??????????????????????????
• finger
• Login Name TTY
  Idle When Where
• u3420245 Nongluck Chutratane pts/18
  Mon 08.24 CS2.au.ac.th
• u3710855 Suhaalaj Barua pts/39
  1 Mon 0923 CS1.au.ac.th

35
?????? finger (???)

• finger _at_nontri.ku.ac.th
• nontri.ku.ac.jp
• User RealName What Idle
  TTYHost Console Location
• dahlan dehlan Phan pine 053 co
  wine hn HIRQakl Nishin
  -csh 113 p3 fizz
  (cxsf0.0)
• kazuo KazuoSatou pino 033 p1
  fizz (0.0)
• mleno Tsutomu Mleno pine 029 p4
  beer allbus.o)

36
?????? pwd

• ????????????????????????????????????????
• ?????? pwd
• ????????
• pwd

37
?????? cat

• ????????????????? content ???????
  ???????????????????????????
• ??????
• cat options file-list
• ????????
• cat list.txt
• cat -n list.txt

38
?????? more

• ????????????????? content ???????
  ???????????????? ?????????????????????????????????
  ??? ?????? ???? space bar ????????????????????????
  ??????????????? enter
• ??????
• more filename filename
• ????????
• more list.txt

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Permission

• ?????????????????????? directory ?????????????
  ????????
• - Read Permission ?????????????? ????????????
  r
• - Write Permission ???????????????????
  ???????????? w
• - Execute Permission ?????????? run
  ???????????? x
• ?????????????? Permission ??????????? directory
  ?????????????????? ls -l

40
???????????????????????????????????????? DOS ???
Unix

• ????????????????? ?? DOS ??
  Unix
• ???????????? del rm
• ????????????????????? ren
  mv
• ????????????????????? dir Is
• ??????? directory cd
  cd
• ????? directory md
  mkdir
• ???????????????? copy cp
• ??????????????? -
  passwd

41
??????????????????????????????

• ?????? write ?????????????????????????????????????
  ??? ?????????Host
• ?????????????? ???????????????????????????
  ??????????????????? ????? ???
• ??????
• write destination-user
• ????????
• write u3615022
• Hello khun toy? How are you going?
• ?? Ctrl - d

42
?????? wall(write all)

• ??????????????????????????????????????????????????
  ???????????? login ???? ??????????? host
  ????????
• ??????
• wall

43
?????? mail

• ????????????????????????????????????????
• ??????
• mailx username_at_hostname
• ????????
• mailx seree_at_bucc.buu.ac.th
• subject lt---------??????????????
• ????????????????????????
• ????? . (???)

44
?????? talk

• ??????????????????????????????????????????? login
  ???? ??????????? host ???????????????? host
  ??????
• ??????
• talk username_at_hostname
• ?????? talk username_at_hostname
• username????????????????????? login
• hostname ?????????????????????????????

45
?????? talk(???)

• ?????? talk username_at_hostname
• ????????????????????????????
  message????????????? ???????????????????????
• username?????????????
• hostname ?????????????????????????????
• ??????????????????????????????????? ctrl - c