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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
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$ H  I' t+ H* {* Gsu=switch user ,頧郢oot 撣唾, ?3 m2 @8 {$ w5 q9 C% T; F" T1 O1 Y
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
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1. 雿輻究u隞
  1. #究u雿輻刻
    + a# F0 D& i7 P, I8 [& B
  2. [aaron@phoenix ~]$ su#雿輻究u氳oot
    0 a  D5 q1 b$ ]. X! O% C. N% K- V
  3. Password:[頛詨叵oot撖蝣奭8 ?- U% C7 @0 f- W+ Q* b5 S# ?/ |

  4. ' ]7 J" v% K( C
  5. [root@phoenix aaron]# service httpd restart#撌脣氳oot- {' g1 |- V( G2 ?6 W) ]1 ~
  6. Stopping httpd:                                            [  OK  ]
    , R/ S0 ^2 G7 ?3 V. O. B
  7. Starting httpd:                                            [  OK  ]
    # z! w1 e( {1 F8 A/ X+ y! ^; a
  8. 2 f7 R$ h6 L6 F7 ?7 q3 {) q
  9. [root@phoenix aaron]# exit#aaron' |: Z& i$ |% ~9 t1 B# w" F6 d

  10. " ?5 I; |* U. q1 v! c5 y  t5 r+ c: H! [
  11. #瑁桐隞歹銝閬氳oot* ]6 l* v$ V. ~! [& l
  12. [aaron@phoenix ~]$ su -c "service httpd restart"
    1 w7 y- z+ r  `* ?: j4 y- i' _' z* Y
  13. Password:[頛詨叵oot撖蝣奭
    ) G% y- l5 b8 k$ ?
  14. Stopping httpd:                                            [  OK  ], @- z& a4 O- K! S" n0 Q# D7 q) a
  15. Starting httpd:                                            [  OK  ]
    - k' V& D/ i0 a# k5 ^- U
  16. " r+ _9 g# ^/ H6 }
  17. #瑁susu -撌桀(Shell啣臬西)
    $ U( W6 u* Y  R" A! G
  18. [aaron@phoenix ~]$ su) Z% y4 Z$ {! _4 H
  19. Password:[頛詨叵oot撖蝣奭
    * D6 |9 _, E6 @" S. {
  20. [root@phoenix aaron]# echo $PATH#訐ATH霈賂潛暸雿輻災aronPATH霈
    7 T: r! u" Q0 L" O4 J/ b6 |: x
  21. /usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/home/aaron/bin! n, E* V! u' e8 i- k5 ]

  22. " K* `: J! g; b  f5 L1 m- U" T
  23. [aaron@phoenix ~]$ su -
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  24. Password:[頛詨叵oot撖蝣奭% o5 H* U: k& K6 v7 B1 S% F/ D; F
  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 m: [" T8 c$ I/ ^0 k* z2 V2. 閮剖sudoer
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  1. [aaron@phoenix ~]$ su
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  2. Password:[頛詨叵oot撖蝣奭) p+ H9 h: d2 i7 n7 m# S

  3. # L8 m% h( Q, W, v
  4. [root@phoenix aaron]# vim /etc/sudoers
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  5. 2 ]; R. I& f9 V
  6. ## Allow root to run any commands anywhere( I! |( X5 ^9 Q# x% P9 _* ]0 G0 z' X
  7. root    ALL=(ALL)       ALL
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  8. ( P8 Z1 s$ `% |5 U& `
  9. ## Allow users to run any commands anywhere* a) U- k- `# }! `8 C6 I
  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
    ( A( I' @! j" v
  2. [aaron@phoenix ~]$ service httpd restart
    7 |1 T* b, Z- g& B  ?( j2 I3 U- H
  3. Stopping httpd:6 _+ E; @, I5 t5 L
  4. rm: cannot remove `/var/run/httpd/httpd.pid': Permission denied
    . Q4 x/ Y' d7 V
  5. " h5 s/ W/ T( k- K. ]: t( w& m  V
  6. Starting httpd:  P: B% R9 W9 j, z5 Q
  7. touch: cannot touch `/var/lock/subsys/httpd': Permission denied- Y7 [/ @) M0 V+ f! L

  8. ; K/ F/ D1 q1 a* U; k7 W2 @
  9. #究udo撠勗臭誑: |! R" v& M# L. f* v. P
  10. [aaron@phoenix ~]$ sudo service httpd restart
    " ]) ?. h2 @3 `, }" t; c
  11. [sudo] password for aaron:[頛詨亙蝣奭
    # }; F& h- |, |& y) t
  12. Stopping httpd:                                            [  OK  ]) s2 }4 {1 ^: n5 ^' p
  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∠⊥- E, A+ A, b" `$ ?$ z
http://kezeodsnx.pixnet.net/blog/post/25810396

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