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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
$ I6 Y4 n9 s, S# u7 D0 H% [
4 @) q& l! Y7 G! f5 ssu=switch user ,頧郢oot 撣唾
1 Z; O" I7 g$ p* z6 ksudo 臭誑root甈瑁賊賭誘,靘憒: sudo service mysqld restart,抵隤芣憒銝:* r8 j1 I  U5 T# z2 K. h1 v

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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 " U3 a1 `! M6 g) d5 a
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1. 雿輻究u隞
  1. #究u雿輻刻  B1 ]6 [  b" f% S5 }  I
  2. [aaron@phoenix ~]$ su#雿輻究u氳oot' O# v# ~  {: Z- E+ t0 f
  3. Password:[頛詨叵oot撖蝣奭, L4 U& o/ g4 |  t1 S5 ~  O

  4. 9 O7 \3 x% S+ t4 f# @1 m
  5. [root@phoenix aaron]# service httpd restart#撌脣氳oot: ?  s( i3 [) `  D7 r
  6. Stopping httpd:                                            [  OK  ]
    ! G9 c3 G- G: F9 ?2 _
  7. Starting httpd:                                            [  OK  ]$ s) E0 z" }9 ?
  8. 6 _5 P: ~/ m  s' V
  9. [root@phoenix aaron]# exit#aaron
    8 g' {2 x9 z/ g, P  S/ k

  10. 0 _( T8 C( w: v6 [- y6 {9 L
  11. #瑁桐隞歹銝閬氳oot
    ; M9 T. \: ?3 O! y
  12. [aaron@phoenix ~]$ su -c "service httpd restart"
    " j  `+ O/ H8 ]; y: I' G
  13. Password:[頛詨叵oot撖蝣奭" [2 k9 v' Q" p- q' K( m( a4 c7 k* g
  14. Stopping httpd:                                            [  OK  ]
    ' k5 c5 }* E" k# `* Z6 }/ ^
  15. Starting httpd:                                            [  OK  ]
    # Q9 r: k6 q" i4 m4 m* T

  16. 8 {( p# a8 p7 x- A9 j! |0 @* U1 p2 g
  17. #瑁susu -撌桀(Shell啣臬西)- x2 R" K, }+ z
  18. [aaron@phoenix ~]$ su8 y' N$ o4 Z  [1 }1 j& }
  19. Password:[頛詨叵oot撖蝣奭
    * H1 q2 y' _0 s- W1 T! }
  20. [root@phoenix aaron]# echo $PATH#訐ATH霈賂潛暸雿輻災aronPATH霈- C+ K2 N, q5 g: V5 X$ s# K# ?
  21. /usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/home/aaron/bin
    ; s% K3 T3 W& A0 Q& i

  22. + h4 o9 Y: @9 ^6 C- X4 Q- r
  23. [aaron@phoenix ~]$ su -+ ~  `  B6 m+ ^
  24. Password:[頛詨叵oot撖蝣奭
    # w$ ?' D4 i' O, H8 M2 k
  25. [root@phoenix aaron]# echo $PATH#訐ATH霈賂雿輻禿ootPATH霈
    ; k7 H4 E( s9 G5 _4 w, Y1 Y4 r
  26. /usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin
銴鋆賭誨蝣

8 U# O& K7 }* S) E* G( _$ E2. 閮剖sudoer

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  1. [aaron@phoenix ~]$ su5 N1 ]) ?5 C& B5 ?2 y
  2. Password:[頛詨叵oot撖蝣奭2 ?) \  G) k' d4 P* M. d
  3. % C3 V- O0 _8 O: D. A. d5 ~
  4. [root@phoenix aaron]# vim /etc/sudoers% u$ z3 X8 F; L. d  m# |
  5. : e) h; {) O3 u; n8 R
  6. ## Allow root to run any commands anywhere
    ( m# j' W! R0 Y% _
  7. root    ALL=(ALL)       ALL
    # x. t/ I$ q1 {- i% M& G: F: |
  8. ) b9 ~3 q# N' k6 K
  9. ## Allow users to run any commands anywhere
    % m! V$ z8 s: ^' J$ U$ \8 R" m
  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
    0 m6 a4 F2 R& J7 H8 \3 r4 W9 R
  2. [aaron@phoenix ~]$ service httpd restart( v+ J* o- R( Y' B' y2 `
  3. Stopping httpd:! B* ]2 ^* H' x& r  I5 A
  4. rm: cannot remove `/var/run/httpd/httpd.pid': Permission denied
    1 v# I" i& x+ n& z: v! D2 Q* J
  5. 1 W5 k, \- c2 Z# A3 f& M
  6. Starting httpd:0 i, {1 w! Y4 e3 t3 w1 ]& V( l
  7. touch: cannot touch `/var/lock/subsys/httpd': Permission denied
      g6 Z+ G# c1 I  G: \
  8. ! b; S/ Q8 Q/ m: b: Z, R4 G
  9. #究udo撠勗臭誑
    7 R1 ^( @! t- Y7 q8 R: k
  10. [aaron@phoenix ~]$ sudo service httpd restart
    * }0 M- M# q8 I4 Y9 ?6 B
  11. [sudo] password for aaron:[頛詨亙蝣奭% ]( ]5 I/ `2 P3 W- i
  12. Stopping httpd:                                            [  OK  ]
    ( B/ `9 k, }2 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∠⊥, c9 L7 M/ ]) h+ r' F' P! F( w' y
http://kezeodsnx.pixnet.net/blog/post/25810396

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