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[linux隞也 Linux 銝 su v.s sudo 隞斗頛

[銴鋆賡包
頝唾唳摰璅撅
璅銝
潸” 2014-12-21 14:08:00 | 芰閰脖 撣 |摨閬 |梯璅∪
砍敺 media 2014-12-21 14:12 蝺刻摩 2 w. G, |0 p5 H% R5 Y  S

& x  |7 H% @+ r0 t1 [, Y" \su=switch user ,頧郢oot 撣唾" Y; K9 B; t- Q6 R) u
sudo 臭誑root甈瑁賊賭誘,靘憒: sudo service mysqld restart,抵隤芣憒銝:
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Linux摰鋆憟隞嗉蝟餌絞閮剖賡閬root甈嚗撠望盎uper-user privileges (擃甈)嚗銋撠望舐恣⊥憒雿root甈嚗臭誑湔亦究sh餃叵oot撣唾嚗究u(substitute user)隞支雿輻刻嚗銝嗅停臭蝙究udo隞扎 ! e8 J: z6 i# ^6 G% @
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1. 雿輻究u隞
  1. #究u雿輻刻6 i; ^/ d3 ^1 Z$ [. l! s
  2. [aaron@phoenix ~]$ su#雿輻究u氳oot* g6 `7 u$ O3 b+ e( ]3 a
  3. Password:[頛詨叵oot撖蝣奭+ w% l1 H" s) N5 v6 u

  4. 5 R) d$ t: K( E: c
  5. [root@phoenix aaron]# service httpd restart#撌脣氳oot
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  6. Stopping httpd:                                            [  OK  ]3 z: h) }$ |8 @+ Q1 N! }! O5 C
  7. Starting httpd:                                            [  OK  ]
    ! J/ X9 C% v! q' \
  8. 2 x& c* o/ L& t1 D1 {& f
  9. [root@phoenix aaron]# exit#aaron
    ) i! e3 P; M" T8 A! {
  10. 2 M5 z) Z, I) K9 e3 D( B
  11. #瑁桐隞歹銝閬氳oot
    1 d, ]# A0 W6 c. X; k1 ~$ H
  12. [aaron@phoenix ~]$ su -c "service httpd restart"
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  13. Password:[頛詨叵oot撖蝣奭
    % y( l& g1 K* |: l' \% z
  14. Stopping httpd:                                            [  OK  ]
    * J1 ~) U  I/ O+ e8 D2 M
  15. Starting httpd:                                            [  OK  ]* o+ f8 M# L! i) [% f$ H; ?

  16. ; W  m5 }6 ~4 V/ s
  17. #瑁susu -撌桀(Shell啣臬西)
    4 M6 r* W" g+ H7 q, A* V
  18. [aaron@phoenix ~]$ su+ E5 [* w  T; u' N( U. s
  19. Password:[頛詨叵oot撖蝣奭! y3 W2 o4 \2 E) X
  20. [root@phoenix aaron]# echo $PATH#訐ATH霈賂潛暸雿輻災aronPATH霈8 g1 W2 C9 S9 Z
  21. /usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/home/aaron/bin
    ! r+ G7 v- f* s

  22. $ r" v5 b% F1 R! B( H
  23. [aaron@phoenix ~]$ su -0 h0 B' B0 @' b
  24. Password:[頛詨叵oot撖蝣奭$ [( {1 i/ b+ D3 k$ Y0 Q# h
  25. [root@phoenix aaron]# echo $PATH#訐ATH霈賂雿輻禿ootPATH霈
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  26. /usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin
銴鋆賭誨蝣

9 n8 A! @0 X  x3 j; K2. 閮剖sudoer

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  1. [aaron@phoenix ~]$ su! v4 o3 Q. b7 \4 {. u
  2. Password:[頛詨叵oot撖蝣奭1 R3 ~7 `8 @: m8 B" Z
  3. % F1 n, b! [7 v' b& s; o
  4. [root@phoenix aaron]# vim /etc/sudoers3 ?% C/ k' d4 S; F( j$ H
  5. ! ^) |: ~/ c' j2 L% n
  6. ## Allow root to run any commands anywhere' p. A$ A2 _: p1 Z% _: H
  7. root    ALL=(ALL)       ALL
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  8. ' h# m# R( L: V9 F( x& o* {) w6 k- K
  9. ## Allow users to run any commands anywhere8 B% W, O: j0 p) t( U( g1 \
  10. aaron   ALL=(ALL)       ALL#啣璇閮帶aron臭誑瑁蝞∠⊥
銴鋆賭誨蝣

; y3 O! ^# n& R, H  v' U3. 蝭靘
  1. #瘝擃甈嚗隞亙停鋡急鈭
    ' c* r( ~4 T# \
  2. [aaron@phoenix ~]$ service httpd restart; ~3 U  I6 b- P5 w  A) l$ H
  3. Stopping httpd:# K4 d  L9 e$ r  i* |/ W
  4. rm: cannot remove `/var/run/httpd/httpd.pid': Permission denied6 `9 ]% I' F( z/ q5 H

  5. - t$ E# j$ Z7 C" }% O( W/ f' ^- t/ a
  6. Starting httpd:9 e5 m/ s1 L  i1 `: @3 p/ i; e( {
  7. touch: cannot touch `/var/lock/subsys/httpd': Permission denied
    # A; A" S1 _. x  S& f- z7 R8 @8 X

  8. 3 X0 K( U& Y' i" @* I5 U
  9. #究udo撠勗臭誑
    . Y4 V* H6 O& U
  10. [aaron@phoenix ~]$ sudo service httpd restart! @  ~& X& E; @0 E1 z# m8 n
  11. [sudo] password for aaron:[頛詨亙蝣奭2 r7 e& a* U: v& e, j& @8 g0 p
  12. Stopping httpd:                                            [  OK  ]
      I  w% H- O! q' E0 M; O
  13. Starting httpd:                                            [  OK  ]
銴鋆賭誨蝣
#susudo撌桀亙冽潭臬西霈銝砌蝙刻仿root撖蝣潘憒究u撠勗撠root撖蝣澆鈭怠箏鳴敺航賡蝟餌絞鋡思噩亦梢芥sudo航銝砌蝙刻蝞∠⊥嚗芾頛詨亥芸楛撖蝣澆喳荔雿璅憸券迎箸蝞∠⊥' ]  D) \, r  P$ j1 t! j2 I
http://kezeodsnx.pixnet.net/blog/post/25810396

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