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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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su=switch user ,頧郢oot 撣唾2 Y! `' Y( U6 Z; Z
sudo 臭誑root甈瑁賊賭誘,靘憒: sudo service mysqld restart,抵隤芣憒銝:
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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# h- O1 x! D. X' o) W  d& |- V
  3. Password:[頛詨叵oot撖蝣奭
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  5. [root@phoenix aaron]# service httpd restart#撌脣氳oot; A! g1 X4 G3 f! T
  6. Stopping httpd:                                            [  OK  ]
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  7. Starting httpd:                                            [  OK  ]
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  9. [root@phoenix aaron]# exit#aaron
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  11. #瑁桐隞歹銝閬氳oot
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  12. [aaron@phoenix ~]$ su -c "service httpd restart"
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  13. Password:[頛詨叵oot撖蝣奭
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  14. Stopping httpd:                                            [  OK  ]; _# y; q3 L' {' y8 r- _7 R& w
  15. Starting httpd:                                            [  OK  ]
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  17. #瑁susu -撌桀(Shell啣臬西)( x" U4 U6 f$ D  r0 }  R
  18. [aaron@phoenix ~]$ su$ H2 L. J7 \6 i+ g
  19. Password:[頛詨叵oot撖蝣奭" u1 d; F: _  D  n& H
  20. [root@phoenix aaron]# echo $PATH#訐ATH霈賂潛暸雿輻災aronPATH霈
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  21. /usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/home/aaron/bin. L; a! h5 q" n# P  Q
  22. # l* T- ]  m/ j3 t6 r8 \
  23. [aaron@phoenix ~]$ su -& |3 l8 @* x. T9 f$ K' M
  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
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  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  [3 G3 o" L/ w- y6 u

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  4. [root@phoenix aaron]# vim /etc/sudoers
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  6. ## Allow root to run any commands anywhere
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  7. root    ALL=(ALL)       ALL
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  9. ## Allow users to run any commands anywhere% c2 z% A* W( S' [" u6 Q
  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 denied. \1 N! [9 M9 ?9 y

  5. 7 g2 h5 s# O* e3 Y) P& E
  6. Starting httpd:% w  ?# n, B9 B1 ?' Q) g5 h; h
  7. touch: cannot touch `/var/lock/subsys/httpd': Permission denied+ ]) ^# N+ \/ Q. U2 u/ M* z. H

  8. ( N+ T/ A& c$ r$ Y/ ~8 F
  9. #究udo撠勗臭誑9 @% m$ b3 F. e7 {3 r' _2 ]9 I2 D8 _
  10. [aaron@phoenix ~]$ sudo service httpd restart
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  11. [sudo] password for aaron:[頛詨亙蝣奭- G1 r* l3 q0 D+ u8 B
  12. Stopping httpd:                                            [  OK  ]5 v. _3 e  B3 m& ^0 M- k# v8 a
  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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