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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 ; Q6 n* W5 z5 H" F( j# O( B

$ U& @( X: _8 B. s: c4 bsu=switch user ,頧郢oot 撣唾
6 s/ c: |+ \* _. {' _sudo 臭誑root甈瑁賊賭誘,靘憒: sudo service mysqld restart,抵隤芣憒銝:9 E# Y/ C3 o' G! w; s3 K' I
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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3 `: w* f& }; d$ c, W( r
  2. [aaron@phoenix ~]$ su#雿輻究u氳oot
    ( ^; q( \/ ^$ V0 Z4 c* u
  3. Password:[頛詨叵oot撖蝣奭
    . H4 e1 Z- G, L* Q

  4. % z$ {, m' z  ^4 @/ W9 I' i, p
  5. [root@phoenix aaron]# service httpd restart#撌脣氳oot
    + g( Y# A2 t" r
  6. Stopping httpd:                                            [  OK  ]7 L) q, h( M8 X6 m, h; o: S4 W; x
  7. Starting httpd:                                            [  OK  ]% v! X, y3 r1 M# X( ?( u) w
  8. ; ~8 C3 @7 k1 H2 @8 |- }! L, ?. H
  9. [root@phoenix aaron]# exit#aaron8 C4 S% f1 C9 [: T1 i, J& E2 G$ ]  Q
  10. ! b) n" U$ H5 n6 S4 T( w
  11. #瑁桐隞歹銝閬氳oot- O( l1 H8 d3 U
  12. [aaron@phoenix ~]$ su -c "service httpd restart"  R# y  k6 J- f! p: O
  13. Password:[頛詨叵oot撖蝣奭  \* [8 j+ u3 ~6 G$ ~! x
  14. Stopping httpd:                                            [  OK  ]5 Y% H6 ]$ J& @9 w7 v; ^& N
  15. Starting httpd:                                            [  OK  ]- F) s1 `- q1 c; d' V

  16. 1 p- @* j+ E: \9 S$ I, S
  17. #瑁susu -撌桀(Shell啣臬西)0 T; I6 ^8 I/ V/ l/ w# J) @! B
  18. [aaron@phoenix ~]$ su: @" {2 m& G5 ^8 `; V6 V- c% e
  19. Password:[頛詨叵oot撖蝣奭
    1 O: m4 h9 }4 h8 i- F
  20. [root@phoenix aaron]# echo $PATH#訐ATH霈賂潛暸雿輻災aronPATH霈
    5 ~9 L' y8 v2 }; W3 s- |/ F
  21. /usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/home/aaron/bin
    5 f/ F& q2 y. Y+ c6 M% f: `

  22. & [6 K& Q  E+ I/ {  Q; c
  23. [aaron@phoenix ~]$ su -8 `3 Y6 m8 L6 C7 o
  24. Password:[頛詨叵oot撖蝣奭
    0 @: H0 `1 k! @
  25. [root@phoenix aaron]# echo $PATH#訐ATH霈賂雿輻禿ootPATH霈
    % `, Y  Z" \2 A% L0 D4 Q" O& X3 {0 b
  26. /usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin
銴鋆賭誨蝣

7 ?$ s# O3 G. \' L) q2. 閮剖sudoer

7 Z, u% }3 N0 m% v& L) S+ s
  1. [aaron@phoenix ~]$ su4 g! a! g) [2 B0 g0 D+ O3 G4 ^- r& b
  2. Password:[頛詨叵oot撖蝣奭& m0 [9 w; K9 e  G

  3. 5 d8 \0 ?% A& x* O& ?
  4. [root@phoenix aaron]# vim /etc/sudoers
    9 a6 w6 ~' D2 b% s  I

  5. + M6 ^* y! h) C! Q' z8 i! ^
  6. ## Allow root to run any commands anywhere1 f; f  H' I& r, y1 Z
  7. root    ALL=(ALL)       ALL
    4 W  c! k2 {3 X  \& V1 W5 C

  8. ) v2 J, Q) ^' c# Z" a' Y, ^$ W0 B
  9. ## Allow users to run any commands anywhere
    5 Y5 T9 i, t7 u; n8 N
  10. aaron   ALL=(ALL)       ALL#啣璇閮帶aron臭誑瑁蝞∠⊥
銴鋆賭誨蝣

' o3 b. W# b7 _" c3. 蝭靘
  1. #瘝擃甈嚗隞亙停鋡急鈭3 P) H' K$ g* o$ l% c
  2. [aaron@phoenix ~]$ service httpd restart5 m8 J0 o7 t+ ^: v. J9 X6 y
  3. Stopping httpd:5 I% c- V& z- X- I( F- s! G- t
  4. rm: cannot remove `/var/run/httpd/httpd.pid': Permission denied
    % V3 p/ J" I# V- j3 L0 e5 z8 Q

  5. , _0 `1 I; F  d6 W4 }! i
  6. Starting httpd:
    ; e) m* M4 i0 J6 Q. c
  7. touch: cannot touch `/var/lock/subsys/httpd': Permission denied
    & j" x4 {) k: Y( `

  8. - }$ j/ s# e) `6 B& I
  9. #究udo撠勗臭誑" |4 x9 i( S. k. Y" o7 _$ h4 b
  10. [aaron@phoenix ~]$ sudo service httpd restart
    / R+ ]4 `% `% [: G; @) j) t& @
  11. [sudo] password for aaron:[頛詨亙蝣奭
    ' t/ v  t% U- U
  12. Stopping httpd:                                            [  OK  ]
    8 z8 }( ]8 J  i' s0 j( u5 ?
  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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