´Ólinux¹âÅÌ×öyumÔ´
Yum£¨È«³ÆÎª Yellow dog Updater, Modified£©ÊÇÒ»¸öÔÚFedoraÖеÄshellǰ¶ËÈí¼þ°ü¹ÜÀíÆ÷¡£»ùÓÚrpm°ü¹ÜÀí£¬Äܹ»´ÓÖ¸¶¨µÄ·þÎñÆ÷×Ô¶¯ÏÂÔØRPM°ü²¢ÇÒ°²×°£¬¿ÉÒÔ×Ô¶¯´¦ÀíÒÀÀµÐÔ¹ØÏµ£¬²¢ÇÒÒ»´Î°²×°ËùÓÐÒÀÀµµÄÈíÌå°ü£¬ÎÞÐë·±ËöµØÒ»´Î´ÎÏÂÔØ¡¢°²×°¡£
ÏÂÃæ½éÉÜÒ»¸ö´Ó¹âÅÌ×öyumÔ´µÄСʵÑé
±¾ÊÔÑéʹÓÃCentOS-5.4-i386-bin,DVD.isoÈí¼þ°ü
1½¨Á¢¹ÒÔØµã ²¢¹ÒÔØ¹âÅÌ
mkdir /media/cdrom mount /dev/cdrom /media/cdrom
2 ÔÚ/etc/yum.repos.dϵÄrhel-debuginfo.repo
cp rhel-debuginfo.repo myum.repo
ÈÃmyum.repo×öyumÔ´Ö¸Ïò
3ÐÞ¸Ämyum.repo Îļþ
[base]
name=server local sources
baseurl=file:///media/cdrom/CentOS
enabled=1
gpgcheck=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release (¿ÉÊ¡ÂÔ)
ÔÚ¸ÃÎļþÖÐ ¡¾ ¡¿ÄÚµÄÊDzֿâµÄÃû×Ö
name ÊǶԲֿâµÄÃèÊö
baseurl ¾ö¶¨ ÊÇ·ñÆô¶¯Õâ¸ö²Ö¿â£¬1ΪÆô¶¯£¬0Ϊ²»Æô¶¯¡£
gpgcheck ÊÇ·ñ¼ì²éGPGÇ©Ãû£¬£¨ÑéÖ¤Òª°²×°µÄÈí¼þ°üÊDz»ÊÇREDHAT¹Ù·½µÄ£©
×¢Òâ ÈôҪʹÓÃÇ©ÃûÑéÖ¤ÔòÒª°²×° RPM-GPG-KEY-redhat-release°ü
4ʹÓÃcreaterepo ½â¾öÈí¼þ°üÖ®¼äµÄÒÀÀµ¹ØÏµ
°²×°createrepo-0.4.,11-3.el5.noarch.rpm( °üÐòÁкſÉÄܲ»Í¬)
createrepo –g /media/cdrom/repodata/comps/xml /media/cdrom/CentOS
4½øÐвâÊÔ
Ïà¹ØÎĵµ£º
1. Linux ½Å±¾±àд»ù´¡
1.1 Óï·¨»ù±¾½éÉÜ
1.1.1 ¿ªÍ·
³ÌÐò±ØÐëÒÔÏÂÃæµÄÐпªÊ¼£¨±ØÐë·½ÔÚÎļþµÄµÚÒ»ÐУ©£º
#!/bin/sh
¡¡¡¡·ûºÅ#!ÓÃÀ´¸æËßϵͳËüºóÃæµÄ²ÎÊýÊÇÓÃÀ´Ö´ÐиÃÎļþµÄ³ÌÐò¡£ÔÚÕâ¸öÀý×ÓÖÐÎÒÃÇʹÓÃ/bin/shÀ´Ö´ÐгÌÐò¡£
¡¡¡¡µ±±à¼ºÃ½Å±¾
ʱ£¬Èç¹ûÒªÖ´Ðиýű¾£¬»¹±ØÐëʹÆä¿ÉÖ´ÐС£
¡¡¡¡ÒªÊ¹½Å±¾¿ÉÖ´ÐУº
......
ÎļþÀàÐÍ»ñȡһ¡¢stat¡¢fstat ºÍlstat º¯Êý#include <sys/types.h>
¡¡¡¡#include <sys/stat.h>
¡¡¡¡int stat(const char * pathname, struct stat * buf);
¡¡¡¡int fstat(int filedes,struct stat * buf);
¡¡¡¡int lstat(const char * pathname, struct stat *buf);
¡¡¡¡Èý¸öº¯ÊýµÄ·µ»Ø£ºÈô³É¹¦ÔòΪ0£¬Èô³ ......
ssh
¹¦ÄÜ£º
Ô¶³ÌµÇ½
Ó÷¨£º
ssh user@hotname
scp
¹¦ÄÜ£º
Ô¶³Ì¿½±´
Ó÷¨£º
ssh [-r]
local_user@local_ip:localfile remote_user@remote_ip:remotefile
²ÎÊý£º
-r ¿½±´ÍêÕûÎļþ¼Ð¼°Îļþ
ldconfig
¹¦ÄÜ£º
¶¯Ì¬Á´½Ó¿â¹ÜÀí£¬Ö÷ÒªÊÇÔÚĬÈÏËÑѰĿ¼(/libºÍ/usr/lib)ÒÔ¼°¶¯Ì¬¿âÅäÖÃÎļþ/etc/ld.so.c ......
ʱ¼ä·þÎñÆ÷¹ÙÍø£º
http://www.pool.ntp.org/zone/cn
ntpdate ÃüÁî
ÓÃ;
ʹÓÃÍøÂç¼ÆÊ±ÐÒ飨NTP£©ÉèÖÃÈÕÆÚºÍʱ¼ä¡£´ËÃüÁî½öÓ¦ÓÃÓÚ AIX 4.2 »òºóÆÚ°æ±¾¡£
Óï·¨
ntpdate
[ -b
] [ -d
] [
-s
] [ -u
] [ -a
Keyid
] [ -e
A ......
import sun.misc.Signal;
import sun.misc.SignalHandler;
/***
* javaÐźŴ¦Àídemo
* @author jiang_qh
*
*/
public class SignalHandlerExample implements SignalHandler{
private SignalHandler oldHandler;
public void handle(Signal signal) {
System.out.println("Signal handler called for signal " ......