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 - #究u雿輻刻2 q5 L4 d* W6 [: L% o
- [aaron@phoenix ~]$ su#雿輻究u氳oot
8 w6 |- A2 j5 A% Z5 ]& H! } - Password:[頛詨叵oot撖蝣奭
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) O0 Y( f5 z9 K- [root@phoenix aaron]# service httpd restart#撌脣氳oot. e" H" N3 S0 H4 W* }( ^. q
- Stopping httpd: [ OK ]
/ s Z$ E5 i1 M& ^5 [3 O3 t0 J - Starting httpd: [ OK ]
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- [root@phoenix aaron]# exit#aaron. |+ v; r( v! m' ^9 ?
7 W: D3 @! l. A3 \ i- #瑁桐隞歹銝閬氳oot
3 J; W7 J" t- e! Q+ i' v* Y - [aaron@phoenix ~]$ su -c "service httpd restart"
6 D, G# t9 K% F - Password:[頛詨叵oot撖蝣奭/ [, P( H# ~3 ]& Y9 K
- Stopping httpd: [ OK ]
* y7 H; W: M+ \) { - Starting httpd: [ OK ]
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- #瑁susu -撌桀(Shell啣臬西)
" Q4 \4 t3 E ^8 \3 s! T - [aaron@phoenix ~]$ su' A9 H6 h4 J- z' B
- Password:[頛詨叵oot撖蝣奭
4 {+ Z7 ?6 G! w& _ - [root@phoenix aaron]# echo $PATH#訐ATH霈賂潛暸雿輻災aronPATH霈
/ W3 ~+ @/ z- @8 _6 _, \( R - /usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/home/aaron/bin( L6 a p3 A* \5 M4 d2 y# ]
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- [aaron@phoenix ~]$ su -
" X5 ]) R: H: h0 B4 F3 d$ l - Password:[頛詨叵oot撖蝣奭, @* b' L+ T) W5 J: b* u
- [root@phoenix aaron]# echo $PATH#訐ATH霈賂雿輻禿ootPATH霈
, J8 H% R$ Z% k. O" \! H6 f - /usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin
銴鋆賭誨蝣 1 |. k) `7 t% h& v! y
2. 閮剖sudoer' r$ V, u$ s+ _. Q e
- [aaron@phoenix ~]$ su
# n! b) b4 J% ?2 L* l - Password:[頛詨叵oot撖蝣奭
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% [/ J# J9 c1 l% i7 A4 Z/ C- [root@phoenix aaron]# vim /etc/sudoers
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* [) b/ @! V7 _: U- ## Allow root to run any commands anywhere5 V! s+ u& P8 A" s' O
- root ALL=(ALL) ALL5 t& Q! P' S4 n" g
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- ## Allow users to run any commands anywhere
) d- X/ h; M* k m. g" P - aaron ALL=(ALL) ALL#啣璇閮帶aron臭誑瑁蝞∠⊥
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3. 蝭靘- #瘝擃甈嚗隞亙停鋡急鈭
! M# ]9 o4 Y& P( A4 U - [aaron@phoenix ~]$ service httpd restart; S& @+ Q+ r( d" a! i) a
- Stopping httpd:
$ J* |, ~# R, H% u: U - rm: cannot remove `/var/run/httpd/httpd.pid': Permission denied/ z! \* [5 P/ U" k
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- Starting httpd:
, [* d1 p5 w3 P' w. X - touch: cannot touch `/var/lock/subsys/httpd': Permission denied" w0 w7 p# z. x/ M: Y1 p* h8 e
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- #究udo撠勗臭誑
3 y9 h, ~' Q) ?+ \- ]1 V4 }9 D - [aaron@phoenix ~]$ sudo service httpd restart
/ \# Y0 b& t+ N2 C: R( m - [sudo] password for aaron:[頛詨亙蝣奭
6 M0 c) n1 k1 O% r, F5 _ - Stopping httpd: [ OK ]
: j3 E+ ]# [$ U5 D8 ]- F# _( B5 \ - 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
臬http://kezeodsnx.pixnet.net/blog/post/25810396 |