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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 1 H  F' ?4 o8 Y9 _  O/ f3 f

5 p9 E) X0 Q% y% u3 Rsu=switch user ,頧郢oot 撣唾. E) m/ v) J% Q3 W8 x
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 6 R% n! c$ G+ N( k: K% e1 b. ^

4 I' R/ w% H, d; D8 E1. 雿輻究u隞
  1. #究u雿輻刻8 p! P7 Y; g, b
  2. [aaron@phoenix ~]$ su#雿輻究u氳oot
    + Z: R9 ?0 C) Y/ ~. }
  3. Password:[頛詨叵oot撖蝣奭+ {4 Z" L% q8 ]

  4. " ~! o; M' k6 _/ q
  5. [root@phoenix aaron]# service httpd restart#撌脣氳oot
    8 K' c! w2 H3 [  F
  6. Stopping httpd:                                            [  OK  ]
    : h( |) u2 d" ~
  7. Starting httpd:                                            [  OK  ]
    * F  {0 E0 d3 {& |  ~' ]0 e

  8. 8 f' u, g/ t: t3 O
  9. [root@phoenix aaron]# exit#aaron' G& h/ l. C' J% g* H6 x2 n

  10. ; ^! P, }3 q- X4 p: a
  11. #瑁桐隞歹銝閬氳oot
    2 _& B0 Y9 h& V* X5 w
  12. [aaron@phoenix ~]$ su -c "service httpd restart"
    ) V1 G+ ^' q& D, k
  13. Password:[頛詨叵oot撖蝣奭% Q% q( p, Q' h* k0 W4 d2 M3 _! K
  14. Stopping httpd:                                            [  OK  ]+ ~! s) V2 `7 L5 n  T- A+ |
  15. Starting httpd:                                            [  OK  ]
    1 t: q+ r2 r. F, p/ w: w
  16. 9 K7 h, \3 \6 B4 w
  17. #瑁susu -撌桀(Shell啣臬西)% c) X. @/ t4 ^
  18. [aaron@phoenix ~]$ su) R9 K. _5 ^" ^+ F8 r- X2 l3 U
  19. Password:[頛詨叵oot撖蝣奭. Q; y( B% `/ ^* g% |
  20. [root@phoenix aaron]# echo $PATH#訐ATH霈賂潛暸雿輻災aronPATH霈* y+ a8 y1 R8 @1 h' ^  }
  21. /usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/home/aaron/bin
    % H9 P3 @: Y: z" q

  22. & l/ ?. ]2 ]6 U! y3 P
  23. [aaron@phoenix ~]$ su -5 C# G* B1 ^! [) s2 ~
  24. Password:[頛詨叵oot撖蝣奭  P$ v2 L. x. c. |2 h% J! D+ y! q
  25. [root@phoenix aaron]# echo $PATH#訐ATH霈賂雿輻禿ootPATH霈; i$ {! b$ Z7 L8 p2 G3 Y% R! Y5 u! l
  26. /usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin
銴鋆賭誨蝣
( u5 H7 x  t8 l! T* j1 l; K
2. 閮剖sudoer

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  1. [aaron@phoenix ~]$ su& M9 `) K3 A" ?& v5 J
  2. Password:[頛詨叵oot撖蝣奭. d/ V# P, y6 t/ l% @
  3. % I5 G2 G6 U" C" J
  4. [root@phoenix aaron]# vim /etc/sudoers% c: ]/ q" A- ^0 |) w' b9 ^
  5. 2 H# f9 p' J/ Z5 Q* A5 L! |
  6. ## Allow root to run any commands anywhere4 W# C  V1 O, R( R/ l
  7. root    ALL=(ALL)       ALL
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  8. - a# w2 X0 d( P3 G9 P- F
  9. ## Allow users to run any commands anywhere
    ; \% B0 j" Q; s3 k) `8 s' ~4 d1 h
  10. aaron   ALL=(ALL)       ALL#啣璇閮帶aron臭誑瑁蝞∠⊥
銴鋆賭誨蝣

# j3 Q9 a" B4 c3 N' Z6 @- b. B& ?3. 蝭靘
  1. #瘝擃甈嚗隞亙停鋡急鈭
    4 o: p3 u6 B4 J7 q8 S8 a* u# g
  2. [aaron@phoenix ~]$ service httpd restart8 k' L+ H! S5 A* z7 D
  3. Stopping httpd:. Z1 T, D4 i; [  V7 I+ |7 w& e$ e
  4. rm: cannot remove `/var/run/httpd/httpd.pid': Permission denied
    ' ]% \0 V' T* `( I" K

  5. % Z3 w' v- S5 ~
  6. Starting httpd:4 K0 N' S. p2 W/ L$ q& Z, ?
  7. touch: cannot touch `/var/lock/subsys/httpd': Permission denied8 B! f4 u+ T! g5 A7 R$ _9 E
  8. " v6 A7 U) C1 q% L: F' c  `& p% f8 s
  9. #究udo撠勗臭誑' n% P0 X! W; `
  10. [aaron@phoenix ~]$ sudo service httpd restart0 Z; i8 r/ a* e+ Z! z" I; g3 B
  11. [sudo] password for aaron:[頛詨亙蝣奭& x/ y+ b" n+ [- A
  12. Stopping httpd:                                            [  OK  ]7 l" v8 T) D+ N$ J, U, b4 t
  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∠⊥3 X; o7 P% b$ o* r
http://kezeodsnx.pixnet.net/blog/post/25810396

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