砍敺 media 2014-12-21 14:12 蝺刻摩 ! A. ~3 S' N1 n% n! }; Y
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su=switch user ,頧郢oot 撣唾$ ^$ B g2 s+ p
sudo 臭誑root甈瑁賊賭誘,靘憒: sudo service mysqld restart,抵隤芣憒銝:9 F, ^1 E8 q+ ?9 K
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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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. R& b1 H6 \- X3 [6 ]$ ?* [- d/ J1. 雿輻究u隞 - #究u雿輻刻
! ^* o' { q, M. M: X0 S; H, m - [aaron@phoenix ~]$ su#雿輻究u氳oot% n1 n. P6 q& h- V: S
- Password:[頛詨叵oot撖蝣奭
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e+ ?( p& H0 F# t- W- [root@phoenix aaron]# service httpd restart#撌脣氳oot
* l6 I& \* {$ Z5 l* O$ t. K( p4 [ - Stopping httpd: [ OK ]4 K; T4 h8 @5 L& p5 |3 d3 D
- Starting httpd: [ OK ]
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- [root@phoenix aaron]# exit#aaron2 P o0 m1 {" b, Y
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- #瑁桐隞歹銝閬氳oot: _; V* q3 X+ j( o7 z7 e
- [aaron@phoenix ~]$ su -c "service httpd restart"/ b. m s# `0 T4 e1 H. C$ A
- Password:[頛詨叵oot撖蝣奭
' M# U# q+ d3 X+ o/ N! I* g - Stopping httpd: [ OK ]
/ P" ]% F2 V' |9 A4 P6 y - Starting httpd: [ OK ]
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- #瑁susu -撌桀(Shell啣臬西)
$ j4 h3 P) l% c7 O4 N! E2 t$ ] - [aaron@phoenix ~]$ su
) X5 D: m _, f. g! G; T - Password:[頛詨叵oot撖蝣奭
5 t) K- z- x* Y; H - [root@phoenix aaron]# echo $PATH#訐ATH霈賂潛暸雿輻災aronPATH霈% E# ?7 \0 |! a& [6 Z5 R0 \% S8 m
- /usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/home/aaron/bin- b2 c/ O, i5 G' ^% ]8 B
4 ?1 L3 Y; v- o- F4 ~- [aaron@phoenix ~]$ su -; T2 a* O# V. ]" v' A% H9 v
- Password:[頛詨叵oot撖蝣奭
6 ~( g5 L8 S) w3 F6 | - [root@phoenix aaron]# echo $PATH#訐ATH霈賂雿輻禿ootPATH霈
& W- R: S `- | - /usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin
銴鋆賭誨蝣
4 t9 l4 V# H ]8 _: G2. 閮剖sudoer
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- [aaron@phoenix ~]$ su- T+ K- P5 r( Y y( c; Q7 U" ~
- Password:[頛詨叵oot撖蝣奭( P+ W' \3 B% O- ^, D) W4 j
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- [root@phoenix aaron]# vim /etc/sudoers
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- ## Allow root to run any commands anywhere' F7 M" G( R1 V' e0 f; z& ^
- root ALL=(ALL) ALL
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* a5 p2 w5 z; Y4 J" b- ## Allow users to run any commands anywhere
/ Q/ M& I5 y# O+ ^0 \ - aaron ALL=(ALL) ALL#啣璇閮帶aron臭誑瑁蝞∠⊥
銴鋆賭誨蝣 : |! a6 i* A* R" E6 Q% ^8 Y7 ?
3. 蝭靘- #瘝擃甈嚗隞亙停鋡急鈭4 [7 ^% z& O% u9 o" v& N& ^
- [aaron@phoenix ~]$ service httpd restart
* w# n0 L$ Y2 m: o - Stopping httpd:- f0 c$ c) k* f. {0 q& G
- rm: cannot remove `/var/run/httpd/httpd.pid': Permission denied9 u0 ^& x+ B$ z& d3 t$ n
4 j% u) u; M0 b9 e- Starting httpd:; k% W& M; f! e; m
- touch: cannot touch `/var/lock/subsys/httpd': Permission denied t: x; t' [+ c/ {6 e" G
9 E: v6 i! `' G* O- #究udo撠勗臭誑 I' e* Y2 l; |, ~
- [aaron@phoenix ~]$ sudo service httpd restart7 H3 l) A# o; c# S, A
- [sudo] password for aaron:[頛詨亙蝣奭' l1 I, [9 i2 r! b
- Stopping httpd: [ OK ], c0 D* M0 v! E6 l+ h
- 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∠⊥
: @: r1 n* L7 c! j v臬http://kezeodsnx.pixnet.net/blog/post/25810396 |