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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 9 _* W" [$ x. |) x2 e
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su=switch user ,頧郢oot 撣唾
1 T9 P8 E* z$ J* g/ x4 @sudo 臭誑root甈瑁賊賭誘,靘憒: sudo service mysqld restart,抵隤芣憒銝:% A* P  s: o. u$ |" X" }  O- ^
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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   V$ u5 W8 U7 e0 k/ s, U5 B
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1. 雿輻究u隞
  1. #究u雿輻刻2 q5 L4 d* W6 [: L% o
  2. [aaron@phoenix ~]$ su#雿輻究u氳oot
    8 w6 |- A2 j5 A% Z5 ]& H! }
  3. Password:[頛詨叵oot撖蝣奭
      W- w6 ?; `* }$ L3 S

  4. ) O0 Y( f5 z9 K
  5. [root@phoenix aaron]# service httpd restart#撌脣氳oot. e" H" N3 S0 H4 W* }( ^. q
  6. Stopping httpd:                                            [  OK  ]
    / s  Z$ E5 i1 M& ^5 [3 O3 t0 J
  7. Starting httpd:                                            [  OK  ]
    : Q6 _$ H8 Z/ b4 M$ s
  8. * ~9 i! Z: m5 ~6 ~  F7 L
  9. [root@phoenix aaron]# exit#aaron. |+ v; r( v! m' ^9 ?

  10. 7 W: D3 @! l. A3 \  i
  11. #瑁桐隞歹銝閬氳oot
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  12. [aaron@phoenix ~]$ su -c "service httpd restart"
    6 D, G# t9 K% F
  13. Password:[頛詨叵oot撖蝣奭/ [, P( H# ~3 ]& Y9 K
  14. Stopping httpd:                                            [  OK  ]
    * y7 H; W: M+ \) {
  15. Starting httpd:                                            [  OK  ]
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  16. + g" u$ F! r5 G" |2 }" v& }" E8 ^
  17. #瑁susu -撌桀(Shell啣臬西)
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  18. [aaron@phoenix ~]$ su' A9 H6 h4 J- z' B
  19. Password:[頛詨叵oot撖蝣奭
    4 {+ Z7 ?6 G! w& _
  20. [root@phoenix aaron]# echo $PATH#訐ATH霈賂潛暸雿輻災aronPATH霈
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  21. /usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/home/aaron/bin( L6 a  p3 A* \5 M4 d2 y# ]
  22. 3 F1 J7 ?: R/ c; X# y0 p. n
  23. [aaron@phoenix ~]$ su -
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  24. Password:[頛詨叵oot撖蝣奭, @* b' L+ T) W5 J: b* u
  25. [root@phoenix aaron]# echo $PATH#訐ATH霈賂雿輻禿ootPATH霈
    , J8 H% R$ Z% k. O" \! H6 f
  26. /usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin
銴鋆賭誨蝣
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2. 閮剖sudoer
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  1. [aaron@phoenix ~]$ su
    # n! b) b4 J% ?2 L* l
  2. Password:[頛詨叵oot撖蝣奭
    % F  p6 h# x/ m3 S: X

  3. % [/ J# J9 c1 l% i7 A4 Z/ C
  4. [root@phoenix aaron]# vim /etc/sudoers
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  5. * [) b/ @! V7 _: U
  6. ## Allow root to run any commands anywhere5 V! s+ u& P8 A" s' O
  7. root    ALL=(ALL)       ALL5 t& Q! P' S4 n" g
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  9. ## Allow users to run any commands anywhere
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  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
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  2. [aaron@phoenix ~]$ service httpd restart; S& @+ Q+ r( d" a! i) a
  3. Stopping httpd:
    $ J* |, ~# R, H% u: U
  4. rm: cannot remove `/var/run/httpd/httpd.pid': Permission denied/ z! \* [5 P/ U" k
  5. * {; A5 w: Z9 ?6 [  `
  6. Starting httpd:
    , [* d1 p5 w3 P' w. X
  7. touch: cannot touch `/var/lock/subsys/httpd': Permission denied" w0 w7 p# z. x/ M: Y1 p* h8 e
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  9. #究udo撠勗臭誑
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  10. [aaron@phoenix ~]$ sudo service httpd restart
    / \# Y0 b& t+ N2 C: R( m
  11. [sudo] password for aaron:[頛詨亙蝣奭
    6 M0 c) n1 k1 O% r, F5 _
  12. Stopping httpd:                                            [  OK  ]
    : j3 E+ ]# [$ U5 D8 ]- F# _( B5 \
  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∠⊥9 x" i1 m+ j3 W, e
http://kezeodsnx.pixnet.net/blog/post/25810396

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