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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
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/ G+ r8 E, ]$ l4 Q3 Q" h4 j4 w6 dsu=switch user ,頧郢oot 撣唾  E$ S; c$ E% d
sudo 臭誑root甈瑁賊賭誘,靘憒: sudo service mysqld restart,抵隤芣憒銝:% y" Q; W2 g  r7 w3 X
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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
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  2. [aaron@phoenix ~]$ su#雿輻究u氳oot
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  3. Password:[頛詨叵oot撖蝣奭# m3 d* k, g" p, P8 a& d/ C
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  5. [root@phoenix aaron]# service httpd restart#撌脣氳oot
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  6. Stopping httpd:                                            [  OK  ]7 u2 ]" c4 C; x$ r
  7. Starting httpd:                                            [  OK  ]
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  8. 6 N7 w, C3 w' E! ]
  9. [root@phoenix aaron]# exit#aaron
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  10.   N8 L: i  Q; t* q0 s2 q
  11. #瑁桐隞歹銝閬氳oot7 a- @5 k+ ?* k8 V5 f
  12. [aaron@phoenix ~]$ su -c "service httpd restart", D+ L; z! L" L  A, S5 ]
  13. Password:[頛詨叵oot撖蝣奭, p5 K9 x3 A+ v5 K
  14. Stopping httpd:                                            [  OK  ]
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  15. Starting httpd:                                            [  OK  ]
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  16. $ F4 h( g" x' C# f! C
  17. #瑁susu -撌桀(Shell啣臬西)
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  18. [aaron@phoenix ~]$ su9 @' ~# p$ q' G/ W
  19. Password:[頛詨叵oot撖蝣奭
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  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  T1 ^; r) _+ U+ W: E& g: Y

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  23. [aaron@phoenix ~]$ su -
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  24. Password:[頛詨叵oot撖蝣奭
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  25. [root@phoenix aaron]# echo $PATH#訐ATH霈賂雿輻禿ootPATH霈# J/ @- k0 d  N  u% z: X
  26. /usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin
銴鋆賭誨蝣
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2. 閮剖sudoer
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  1. [aaron@phoenix ~]$ su
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  2. Password:[頛詨叵oot撖蝣奭: ]! D) M6 f9 U0 n; l9 f
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  4. [root@phoenix aaron]# vim /etc/sudoers
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  5. $ |$ \' {: T" @9 \
  6. ## Allow root to run any commands anywhere, _2 R4 n/ R. N# b: a; Y
  7. root    ALL=(ALL)       ALL
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  8. 5 ^" x/ T; O% p5 U: |
  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
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  3. Stopping httpd:
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  4. rm: cannot remove `/var/run/httpd/httpd.pid': Permission denied8 s  `9 z5 |0 }: R
  5. - ?3 v2 E- b. h% J; n
  6. Starting httpd:# L+ U) P2 l5 }/ ?; t! R% O- y! \
  7. touch: cannot touch `/var/lock/subsys/httpd': Permission denied, s/ O. L4 N' U* V

  8. # R3 S; N3 C; {
  9. #究udo撠勗臭誑$ \. y$ j9 Q. }
  10. [aaron@phoenix ~]$ sudo service httpd restart* b7 V7 {4 P7 |5 I
  11. [sudo] password for aaron:[頛詨亙蝣奭
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  12. Stopping httpd:                                            [  OK  ]
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  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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