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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 $ S2 r9 c8 V6 S9 u
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su=switch user ,頧郢oot 撣唾
. ]( C- a$ j8 ~! b5 Usudo 臭誑root甈瑁賊賭誘,靘憒: sudo service mysqld restart,抵隤芣憒銝:9 W3 t9 k# E: Z4 h- g- |5 O
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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 4 W2 }3 l* Y5 O' O2 I5 u
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1. 雿輻究u隞
  1. #究u雿輻刻
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  2. [aaron@phoenix ~]$ su#雿輻究u氳oot
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  3. Password:[頛詨叵oot撖蝣奭
    0 W) O2 B8 j% k" ?
  4. ' a1 U' p1 T% c: I& y/ F2 z
  5. [root@phoenix aaron]# service httpd restart#撌脣氳oot
    # B0 L( c  E: [' Q$ y3 M. `
  6. Stopping httpd:                                            [  OK  ]
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  7. Starting httpd:                                            [  OK  ]& F9 S# S7 P1 d+ X3 M7 L
  8. ( s# Q+ {2 E% p& U
  9. [root@phoenix aaron]# exit#aaron' V& e  r! w3 e" [/ u! A& c

  10. 2 P* C. v9 l$ J
  11. #瑁桐隞歹銝閬氳oot
    7 J: V* j( t. p0 B  u, ~* G
  12. [aaron@phoenix ~]$ su -c "service httpd restart"
    1 E) a5 ]' A: m; A, j; s
  13. Password:[頛詨叵oot撖蝣奭
    " e" `( k: l6 p0 Y( K
  14. Stopping httpd:                                            [  OK  ]
    * ^1 R  n, b$ w) O  g' d
  15. Starting httpd:                                            [  OK  ]% n) w# |9 F' s$ q% L% P* }; l

  16. / @0 S. \$ \9 D+ v" {1 a" x
  17. #瑁susu -撌桀(Shell啣臬西)
    $ L: n& E( F# n, C2 |
  18. [aaron@phoenix ~]$ su
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  19. Password:[頛詨叵oot撖蝣奭
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  20. [root@phoenix aaron]# echo $PATH#訐ATH霈賂潛暸雿輻災aronPATH霈, `7 X- m4 y) k6 v
  21. /usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/home/aaron/bin* J  o! _* N/ i3 @9 W( u

  22. + z# j$ E5 D. T2 d, {
  23. [aaron@phoenix ~]$ su -
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  24. Password:[頛詨叵oot撖蝣奭
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  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

. }3 u3 [, [9 g7 C+ h/ H$ @2. 閮剖sudoer
% {! d3 b) @2 D. A9 J0 y# u
  1. [aaron@phoenix ~]$ su
    4 q) p6 p& G) g8 ~
  2. Password:[頛詨叵oot撖蝣奭, C* g" {" u. C6 E$ b6 h+ b

  3. 4 H6 ]; V6 l" Q  w& u( M6 T
  4. [root@phoenix aaron]# vim /etc/sudoers
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  5. 3 K2 f4 D; L8 k- P. P+ w2 w5 D
  6. ## Allow root to run any commands anywhere  Z7 `' ?! k3 Y
  7. root    ALL=(ALL)       ALL
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  8. & ^' G+ w5 A8 L( k% s
  9. ## Allow users to run any commands anywhere* |. `; y4 I" R, ]' j9 z+ E# t
  10. aaron   ALL=(ALL)       ALL#啣璇閮帶aron臭誑瑁蝞∠⊥
銴鋆賭誨蝣
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3. 蝭靘
  1. #瘝擃甈嚗隞亙停鋡急鈭- K: l$ k* A) C& R. p0 B4 t% z
  2. [aaron@phoenix ~]$ service httpd restart
    $ m- [) @( @! n; O
  3. Stopping httpd:
    , P! P8 s& F4 J3 l. D! N0 u
  4. rm: cannot remove `/var/run/httpd/httpd.pid': Permission denied  ]) {" ^, D$ Q" R- M7 B
  5. ) H" ?9 g5 J" e
  6. Starting httpd:/ w- q* h$ ~1 @& P
  7. touch: cannot touch `/var/lock/subsys/httpd': Permission denied) d; o9 g6 X- r5 b5 y  k
  8. , J( u5 j& g8 O" Z$ f# C1 _
  9. #究udo撠勗臭誑
    8 U0 N( |' M! x/ e+ S. }
  10. [aaron@phoenix ~]$ sudo service httpd restart
    ; ^6 t/ }  H7 O$ h) ^
  11. [sudo] password for aaron:[頛詨亙蝣奭
    3 @6 x5 Z% x- a/ E8 w3 z: q
  12. Stopping httpd:                                            [  OK  ]
    + h" b: W  K; s
  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∠⊥
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http://kezeodsnx.pixnet.net/blog/post/25810396

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