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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 y$ Q6 P* k7 v3 [3 Q1 l" }4 B

2 r0 C! G  J* Ksu=switch user ,頧郢oot 撣唾
; @  A# f+ Y  R6 {- K1 H# k, j, Y; isudo 臭誑root甈瑁賊賭誘,靘憒: sudo service mysqld restart,抵隤芣憒銝:7 P: E# i7 h8 j8 t# ]6 `

  P* _% f  U, r) W& ^: ~! _
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 7 {4 K. k" x# F) R- l! D* ?

2 R# p% ~* G  I5 w, ^  [" h1. 雿輻究u隞
  1. #究u雿輻刻
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  2. [aaron@phoenix ~]$ su#雿輻究u氳oot5 H7 {1 `0 b" L# D5 Z! n
  3. Password:[頛詨叵oot撖蝣奭
    " w! @- [- T1 g) w

  4. ) r. {: Z0 P$ |  d
  5. [root@phoenix aaron]# service httpd restart#撌脣氳oot
    ( S  }% i, H- H. X2 o% X  ~
  6. Stopping httpd:                                            [  OK  ]
    6 b2 L6 t9 ~; l6 B, m
  7. Starting httpd:                                            [  OK  ]
    5 B& R6 p: F/ @. ~  I7 Z# \. o0 t- ?
  8. & K! z7 N5 D6 q: X
  9. [root@phoenix aaron]# exit#aaron+ I; O% z- b( l1 B' v8 a- p! u
  10. ( [) v' h2 r7 X
  11. #瑁桐隞歹銝閬氳oot
      G  I5 P0 Y- ^9 z$ f! Z8 M
  12. [aaron@phoenix ~]$ su -c "service httpd restart"
    : m  Z' ?. v1 z) K4 U1 @2 G
  13. Password:[頛詨叵oot撖蝣奭
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  14. Stopping httpd:                                            [  OK  ]( R, X( J8 c5 z! `, a; c+ b
  15. Starting httpd:                                            [  OK  ]
    ! ^; X2 `4 Q$ a

  16. ! e0 h8 G& E; `  X8 ], Y9 ^( o9 I
  17. #瑁susu -撌桀(Shell啣臬西)
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  18. [aaron@phoenix ~]$ su
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  19. Password:[頛詨叵oot撖蝣奭
    ) o* z, J# B, Q6 v
  20. [root@phoenix aaron]# echo $PATH#訐ATH霈賂潛暸雿輻災aronPATH霈5 Q! G' d& T6 @
  21. /usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/home/aaron/bin
    2 g$ e& ~5 J: ]6 G6 O

  22. 7 ]/ c2 @( r" p& }5 h/ o9 R
  23. [aaron@phoenix ~]$ su -5 o- [% t, P' F( Y% M
  24. Password:[頛詨叵oot撖蝣奭
    8 K# @6 |4 t+ ?* T4 |* S8 q
  25. [root@phoenix aaron]# echo $PATH#訐ATH霈賂雿輻禿ootPATH霈* I9 k4 R  |5 |5 K9 U* V3 O
  26. /usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin
銴鋆賭誨蝣

# r8 D0 D1 u2 l7 {! X1 b/ L5 V, H1 |2. 閮剖sudoer

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  1. [aaron@phoenix ~]$ su% c; J4 I: t5 X) ~7 R
  2. Password:[頛詨叵oot撖蝣奭/ Z/ a1 Y4 q" k0 P! `

  3. , ?% }2 q& v' t
  4. [root@phoenix aaron]# vim /etc/sudoers5 F6 [' O7 ]  q- ?

  5.   I, N% }' G+ Z( Q! d4 X
  6. ## Allow root to run any commands anywhere
    / ^6 x3 w, \7 E* P0 L
  7. root    ALL=(ALL)       ALL+ {2 K4 K: {! `5 c2 @( t
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  9. ## Allow users to run any commands anywhere
    7 p* g0 a* v- b: v: x: e
  10. aaron   ALL=(ALL)       ALL#啣璇閮帶aron臭誑瑁蝞∠⊥
銴鋆賭誨蝣
8 n# N, V1 u" V
3. 蝭靘
  1. #瘝擃甈嚗隞亙停鋡急鈭
    # X1 p6 Q, ]: Y( {6 K! H% n
  2. [aaron@phoenix ~]$ service httpd restart$ }: m9 r" _/ N! B
  3. Stopping httpd:7 B6 I: l9 }: Z, T  W0 v+ O5 I
  4. rm: cannot remove `/var/run/httpd/httpd.pid': Permission denied
    ' v# h1 t/ [$ P/ }4 y* q

  5. 5 c; I* G4 m" p2 o& T8 K. i
  6. Starting httpd:( v8 ]" ]5 V2 E5 a8 p6 p
  7. touch: cannot touch `/var/lock/subsys/httpd': Permission denied) V6 A& {& k& g+ o1 d

  8. ; x5 u  G# M) ]4 i, o
  9. #究udo撠勗臭誑. y2 Y# \* }: j
  10. [aaron@phoenix ~]$ sudo service httpd restart8 V( H* L# X2 s1 X
  11. [sudo] password for aaron:[頛詨亙蝣奭
    " d; e: c. `( z/ d
  12. Stopping httpd:                                            [  OK  ]
    5 d3 s9 C9 u1 i3 x
  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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