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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 ) l7 n  w9 U( |* b# G' H

7 K- @4 Y7 l' T  c' H+ o2 S* x: |+ Bsu=switch user ,頧郢oot 撣唾6 n2 G2 m5 w9 J  F$ _$ a/ ], W5 \& U
sudo 臭誑root甈瑁賊賭誘,靘憒: sudo service mysqld restart,抵隤芣憒銝:" e5 C  M1 m! X9 Z4 t) s
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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 ; c! V3 U$ \# V& u

0 n/ _* |& Z( b: Q' `  K8 ^3 D$ z1. 雿輻究u隞
  1. #究u雿輻刻
    ; o  I" N- o" \% }; j
  2. [aaron@phoenix ~]$ su#雿輻究u氳oot  U7 r: ^) w) B. G
  3. Password:[頛詨叵oot撖蝣奭
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  4. 9 Y- _  _& e; t( g* j1 d+ `
  5. [root@phoenix aaron]# service httpd restart#撌脣氳oot
    9 H( T6 {  U* i4 }( ?! h
  6. Stopping httpd:                                            [  OK  ]
      k7 k$ S( Z6 ?- ^/ ]. S' K4 V4 l& \
  7. Starting httpd:                                            [  OK  ], U9 v. Y8 U$ o& t

  8. 6 l7 U, |2 K0 l. ~
  9. [root@phoenix aaron]# exit#aaron
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  10.   o% V* u2 s) D9 \  S! O3 ?+ Q1 `
  11. #瑁桐隞歹銝閬氳oot
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  12. [aaron@phoenix ~]$ su -c "service httpd restart"! {3 e) A2 u+ u' F4 B! N
  13. Password:[頛詨叵oot撖蝣奭  v- I  W4 \3 ?: |
  14. Stopping httpd:                                            [  OK  ]
    ( K8 P1 v( o, w* k
  15. Starting httpd:                                            [  OK  ]; B# L  o& O9 k6 I3 D

  16. ; F4 Y& r2 Y- b  o# p3 r. ^
  17. #瑁susu -撌桀(Shell啣臬西)5 b8 \& [2 ^* Y) `2 A2 l
  18. [aaron@phoenix ~]$ su
    6 N$ ^- Z8 t9 D- R& ~9 ]# I
  19. Password:[頛詨叵oot撖蝣奭) z4 g& |! V; Z7 ?( J
  20. [root@phoenix aaron]# echo $PATH#訐ATH霈賂潛暸雿輻災aronPATH霈
    ; G$ |$ [0 M5 R. w5 a# c
  21. /usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/home/aaron/bin
    ' d3 r! U3 y5 D

  22. ; n8 `$ V8 u2 P; ^( L
  23. [aaron@phoenix ~]$ su -/ ?. O/ U+ T( w+ ?1 f8 r
  24. Password:[頛詨叵oot撖蝣奭  Y3 b. \8 z* d# k# Z' \1 x
  25. [root@phoenix aaron]# echo $PATH#訐ATH霈賂雿輻禿ootPATH霈' m" i) b" f! o' y' K4 R: l9 v: A
  26. /usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin
銴鋆賭誨蝣
5 b' O7 Y, k8 @1 L+ ^' E, q
2. 閮剖sudoer

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  1. [aaron@phoenix ~]$ su  G7 b3 `7 @) ]- y4 G# }
  2. Password:[頛詨叵oot撖蝣奭
    % \* A4 U: K9 N" T* o

  3. 4 ?# B1 [! C8 Z, y: k' \
  4. [root@phoenix aaron]# vim /etc/sudoers, `7 {3 \5 Y3 |5 A! t7 s" S; s
  5. 5 j" L/ B, A  z% q
  6. ## Allow root to run any commands anywhere9 [/ U5 ?  V$ C, \% C6 t
  7. root    ALL=(ALL)       ALL' M2 R; T: s  v: c$ G4 I' |

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  9. ## Allow users to run any commands anywhere; G" s' z$ ~  o9 R. q
  10. aaron   ALL=(ALL)       ALL#啣璇閮帶aron臭誑瑁蝞∠⊥
銴鋆賭誨蝣

; W0 i& X( s) \7 o; i: E3. 蝭靘
  1. #瘝擃甈嚗隞亙停鋡急鈭
    * p# T+ U% I) h! T+ E5 Q7 f
  2. [aaron@phoenix ~]$ service httpd restart6 e0 w# i" U$ n0 p( t
  3. Stopping httpd:
    & ~/ q( }4 l# v; O7 r
  4. rm: cannot remove `/var/run/httpd/httpd.pid': Permission denied
    * c0 x, Y+ x$ H  V; H- t3 @
  5. + A) n' k9 M4 e! L1 h5 \% ^* {
  6. Starting httpd:  J( p1 p! i# n  B7 t! r5 ?0 D
  7. touch: cannot touch `/var/lock/subsys/httpd': Permission denied
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  8. 5 d1 F* U6 P& Q9 R. [: S
  9. #究udo撠勗臭誑+ }* |' ]8 u& i6 s5 d% E( a$ l4 h
  10. [aaron@phoenix ~]$ sudo service httpd restart- e) t/ t8 ~& c& q7 E2 D) O' b  T& U
  11. [sudo] password for aaron:[頛詨亙蝣奭( h1 x- K- `( {5 G) T
  12. Stopping httpd:                                            [  OK  ]7 i" P8 M5 P/ p. H
  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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