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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 |甇摨閬 |梯璅∪
砍敺 media 2014-12-21 14:12 蝺刻摩 7 d) m  I! u+ R/ B1 G

/ K+ C% \7 T0 ?# N0 ~! ^su=switch user ,頧郢oot 撣唾
- @0 e/ M. Z1 ?& A& _sudo 臭誑root甈瑁賊賭誘,靘憒: sudo service mysqld restart,抵隤芣憒銝:& ~7 ?7 P9 g, J/ f
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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
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9 Z( z/ L4 j5 [) H: E1. 雿輻究u隞
  1. #究u雿輻刻: r; w" a% i2 v$ |* c
  2. [aaron@phoenix ~]$ su#雿輻究u氳oot; p' a- S4 e& l1 p9 B; f& Z/ ~8 E/ g
  3. Password:[頛詨叵oot撖蝣奭
    2 Y( T0 z9 I3 q+ u

  4. 9 }5 `( a3 C9 }3 u: R( Y
  5. [root@phoenix aaron]# service httpd restart#撌脣氳oot
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  6. Stopping httpd:                                            [  OK  ]6 [8 t6 E8 {4 H1 r8 [
  7. Starting httpd:                                            [  OK  ]
    % H0 }& ]1 v% P& E/ u

  8. / h5 a% p2 F# m' L7 N* W
  9. [root@phoenix aaron]# exit#aaron
    - ^/ Q# N9 z2 c7 E; Y

  10. ( W/ L# N+ N' S7 j
  11. #瑁桐隞歹銝閬氳oot
    ( X* u) F: G: ]$ H: `) e% {  x
  12. [aaron@phoenix ~]$ su -c "service httpd restart"
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  13. Password:[頛詨叵oot撖蝣奭
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  14. Stopping httpd:                                            [  OK  ]7 `! o9 {2 Y- ~
  15. Starting httpd:                                            [  OK  ]) l5 d& I5 B4 c' u
  16. 8 N" ?& H, ?- v' j
  17. #瑁susu -撌桀(Shell啣臬西)2 r+ r4 f0 z" X1 Q
  18. [aaron@phoenix ~]$ su0 h% I5 i  p7 O& L  T' b
  19. Password:[頛詨叵oot撖蝣奭/ r. ^- Y) U  |; V/ \
  20. [root@phoenix aaron]# echo $PATH#訐ATH霈賂潛暸雿輻災aronPATH霈6 }' f0 m* K* ]2 i7 A* I) h
  21. /usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/home/aaron/bin! y- |% w2 O) e' \* z% h

  22. 8 `- P- V' S- O+ V# ~  ^9 F( U7 _
  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 $PATH#訐ATH霈賂雿輻禿ootPATH霈" d8 _4 K# T) ^- p; r
  26. /usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin
銴鋆賭誨蝣
1 y' r- o. Y/ v0 }! m, k. t
2. 閮剖sudoer
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  1. [aaron@phoenix ~]$ su5 d' f8 r$ k+ f; Q$ R
  2. Password:[頛詨叵oot撖蝣奭
    - ^8 v+ g( Z  U  w  |& r$ N2 v1 ]
  3. " @! N; d4 J' t( M" R
  4. [root@phoenix aaron]# vim /etc/sudoers
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  5.   @& `' L- R+ Y4 V& E  B" e
  6. ## Allow root to run any commands anywhere  K" p: I# o4 u+ K
  7. root    ALL=(ALL)       ALL
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  9. ## Allow users to run any commands anywhere
    $ T2 m5 D: j: j/ h7 G% L
  10. aaron   ALL=(ALL)       ALL#啣璇閮帶aron臭誑瑁蝞∠⊥
銴鋆賭誨蝣

% c8 I" d; y$ ?3 \7 S3. 蝭靘
  1. #瘝擃甈嚗隞亙停鋡急鈭
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  2. [aaron@phoenix ~]$ service httpd restart' y6 F+ s) ~9 @; y+ S+ W
  3. Stopping httpd:
    ) Y& n! D0 E7 a5 W# S
  4. rm: cannot remove `/var/run/httpd/httpd.pid': Permission denied
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  5. 2 y. \0 Y- r. y4 A+ {
  6. Starting httpd:
    & ~6 v+ |; w- B) ^( n
  7. touch: cannot touch `/var/lock/subsys/httpd': Permission denied- P  {: o, w1 ?7 p8 J6 V% o
  8. $ ?) h( g. h1 _% Y1 E
  9. #究udo撠勗臭誑! j$ E4 j% e9 }5 \, R! X
  10. [aaron@phoenix ~]$ sudo service httpd restart3 X" @# r3 q8 [& }+ {6 a  L  Y
  11. [sudo] password for aaron:[頛詨亙蝣奭+ v$ G: V  `' H0 C% {0 U: o
  12. Stopping httpd:                                            [  OK  ]5 S, h, q+ F3 Y  @3 v
  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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