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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$ o& A5 w; ~) x
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 : X& c% C) t. o# o' F+ m6 p
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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
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  5. [root@phoenix aaron]# service httpd restart#撌脣氳oot5 ^6 j; h) N! |( W9 U
  6. Stopping httpd:                                            [  OK  ]
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  7. Starting httpd:                                            [  OK  ]
    ! {1 \% x2 l5 e
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  9. [root@phoenix aaron]# exit#aaron% t4 _6 W. b1 g7 o$ b
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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  ]! v# u: N% S; M/ \
  15. Starting httpd:                                            [  OK  ]) @: B& i# ]. M8 k+ |

  16. 9 E! A- J. L2 e, ]2 @. p. Y1 W
  17. #瑁susu -撌桀(Shell啣臬西)" D3 i! C; O% z. q9 d" a/ V
  18. [aaron@phoenix ~]$ su+ Q# i- ^/ c4 j6 |
  19. Password:[頛詨叵oot撖蝣奭
    : a% a  k  |4 H( H7 X- f. j, L3 N0 t
  20. [root@phoenix aaron]# echo $PATH#訐ATH霈賂潛暸雿輻災aronPATH霈* q* a# E4 _/ w& F
  21. /usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/home/aaron/bin
    $ z  m$ W; p+ S5 a
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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 $PATH#訐ATH霈賂雿輻禿ootPATH霈
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  26. /usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin
銴鋆賭誨蝣
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2. 閮剖sudoer
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  1. [aaron@phoenix ~]$ su9 o# m! }3 v- x% R. D
  2. Password:[頛詨叵oot撖蝣奭9 W) M. n3 o' ?6 ?4 `3 D
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  4. [root@phoenix aaron]# vim /etc/sudoers
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  5. % A1 D7 B8 H$ l+ X  @0 L% Y0 \( D
  6. ## Allow root to run any commands anywhere' \" T2 z/ w) D# E8 K7 G7 f
  7. root    ALL=(ALL)       ALL/ J/ z6 g% X: [: i6 B/ c$ q
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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. z' D) f  O% P" t# z* W: Q% T* B0 |
  3. Stopping httpd:
    $ y6 o, }1 H0 }0 D: `- n: n! q
  4. rm: cannot remove `/var/run/httpd/httpd.pid': Permission denied, G  B0 Y4 G% @  x
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  6. Starting httpd:
    % {8 g2 n# X7 P* c% _
  7. touch: cannot touch `/var/lock/subsys/httpd': Permission denied0 y& ~$ |7 Q- \. s$ W2 j) N# W) M

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  9. #究udo撠勗臭誑* a* f/ B4 K; m2 |
  10. [aaron@phoenix ~]$ sudo service httpd restart
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  11. [sudo] password for aaron:[頛詨亙蝣奭
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  12. Stopping httpd:                                            [  OK  ]
    $ s+ Y( J, J: `- ?+ n# ~
  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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