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linuxÏÂÉú²úÕßÏû·ÑÕßµÄʵÏÖ

 #include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <pthread.h>
#include <semaphore.h>
#define M 10 // »º³åÊýÄ¿
int in = 0;   // Éú²úÕß·ÅÖòúÆ·µÄλÖÃ
int out = 0; // Ïû·ÑÕßÈ¡²úÆ·µÄλÖÃ
int buff[M] = {0}; // »º³å³õʼ»¯Îª0£¬ ¿ªÊ¼Ê±Ã»ÓвúÆ·
sem_t empty_sem; // ͬ²½ÐźÅÁ¿£¬ µ±ÂúÁËʱ×èÖ¹Éú²úÕ߷ŲúÆ·
sem_t full_sem;   // ͬ²½ÐźÅÁ¿£¬ µ±Ã»²úƷʱ×èÖ¹Ïû·ÑÕßÏû·Ñ
pthread_mutex_t mutex; // »¥³âÐźÅÁ¿£¬ Ò»´ÎÖ»ÓÐÒ»¸öÏ̷߳ÃÎÊ»º³å
int product_id = 0;   //Éú²úÕßid
int prochase_id = 0; //Ïû·ÑÕßid
/* ´òÓ¡»º³åÇé¿ö */
void print()
{
int i;
for(i = 0; i < M; i++)
   printf("%d ", buff[i]);
printf("\n");
}
/* Éú²úÕß·½·¨ */
void *product()
{
int id = ++product_id;
while(1)
{
   // ÓÃsleepµÄÊýÁ¿¿ÉÒÔµ÷½ÚÉú²úºÍÏû·ÑµÄËÙ¶È£¬±ãÓÚ¹Û²ì
   sleep(1);
   //sleep(1);
 
   sem_wait(&empty_sem);
   pthread_mutex_lock(&mutex);
  ......

LinuxÍøÂç½Ó¿ÚµÄÔ´Âë·ÖÎö

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¡¡±¾ÎÄÒÔLinux2.4.16ÄÚºË×÷Ϊ½²½âµÄ¶ÔÏó£¬ÄÚºËÔ´Âë¿ÉÒÔÔÚhttp://www.kernel.orgÉÏÏÂÔØ¡£ÎÒ¶ÁÔ´Âëʱ²Î¿¼µÄÊÇhttp://lxr.linux.no/Õâ¸ö½»²î²Î¿¼µÄÍøÕ¾£¬ÎÒ¸öÈËÈÏΪÊÇÒ»¸öºÜºÃµÄ¹¤¾ß£¬Èç¹ûÓÐÌõ¼þ×îºÃÉÏÕâ¸öÍøÕ¾¡£
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¡¡LinuxµÄÍøÂç½Ó¿Ú·ÖΪËIJ¿·Ý£ºÍøÂçÉ豸½Ó¿Ú²¿·Ý£¬ÍøÂç½Ó¿ÚºËÐIJ¿·Ý£¬ÍøÂçЭÒé×岿·Ý£¬ÒÔ¼°ÍøÂç½Ó¿Úsocket²ã¡£
¡¡ÍøÂçÉ豸½Ó¿Ú²¿·ÝÖ÷Òª¸ºÔð´ÓÎïÀí½éÖʽÓÊպͷ¢ËÍÊý¾Ý¡£ÊµÏÖµÄÎļþÔÚlinu/driver/netĿ¼ÏÂÃæ¡£
¡¡ÍøÂç½Ó¿ÚºËÐIJ¿·ÝÊÇÕû¸öÍøÂç½Ó¿ÚµÄ¹Ø¼ü²¿Î»£¬ËüÎªÍøÂçЭÒéÌṩͳһµÄ·¢Ëͽӿڣ¬ÆÁ±Î¸÷ÖÖ¸÷ÑùµÄÎïÀí½éÖÊ£¬Í¬Ê±ÓиºÔð°ÑÀ´×ÔϲãµÄ°üÏòºÏÊʵÄЭÒéÅäËÍ¡£ËüÊÇÍøÂç½Ó¿ÚµÄÖÐÊಿ·Ý¡£ËüµÄÖ÷ҪʵÏÖÎļþÔÚlinux/net/coreĿ¼Ï£¬ÆäÖÐlinux/net/core/dev.cΪÖ÷Òª¹ÜÀíÎļþ¡£
¡¡ÍøÂçЭÒé×岿·ÝÊǸ÷ÖÖ¾ßÌåЭÒéʵÏֵIJ¿·Ý¡£LinuxÖ§³ÖTCP/IP£¬IPX£¬X.25£¬AppleTalkµÈµÄÐ­Ò ......

½â¾ölinuxÏÂtoo many fileÎÊÌâ

¹¤×÷Öз¢ÏÖ£¬ÔÚlinuxÖдWEBLOGICÓ¦Ó÷þÎñÆ÷µÄ»·¾³Ï£¬ÓÐʱ¿ÉÄÜͬʱ·¢²¼¶à¸öwar°ü£¬¶øÇÒÿһ¸öwar°üµÄÎļþÊýÄ¿ºÜ¶à£¬»òÕ߿ͻ§Í¬Ê±·ÃÎÊÁ¿±È½Ï´ó£¬´ËʱWEBLOGIC¾Í»á±¨´í£¬±¨´íÐÅÏ¢Öаüº¬“Too many open files”£¬ÀýÈ磺
java.io.FileNotFoundException: /home/weblogic/bea/user_projects/domains/lhyth/servers/AdminServer/tmp/_WL_user/_appsdir_AM_war/syskue/.tld_cache/webwork-2.2.6.jar/META-INF/taglib.tld/crc.ser (Too many open files)
        at java.io.FileOutputStream.open(Native Method)
        at java.io.FileOutputStream.<init>(FileOutputStream.java:179)
        at java.io.FileOutputStream.<init>(FileOutputStream.java:131)
        at weblogic.descriptor.DescriptorCache.writeToCache(DescriptorCache.java:236)
        at weblogic.descriptor.DescriptorCache.parseXML(DescriptorCache.java:388)
  &n ......

LinuxϵÄDhcp°²×°(·þÎñÆ÷ÃûDHcpd)

 
Ò» °²×°DHCP·þÎñÆ÷
1.ÏȲ鿴ϵͳÊÇ·ñ°²×°DHcp
#rpm -qa|grep dhcp
2.°²×°RPM°ü,Èç¹ûÊÇRea Hat LInux9°²×°°üÔÚµÚ¶þÕ¹âÅÌ,¹ÒÔÚÁ˹âÇýºó¿ÉÓòéÕÒÃüÁîÕÒDHCP°ü
#find /mnt/cdrom/ -name "dhcp"
3.²é¿´findÃüÁîËѳöÀ´µÄÎļþ·¾¶½øÐа²×°
#rpm -ivh/mnt/cdrom/RedHat/RPMS/dhcp*/dhcpd*(¸ù¾Ý×Ô¼ºÊµ¼ÊÎļþ·¾¶)
4.°²×°Íê³Éºó¸´ÖÆÅäÖÃÎļþ·¶±¾µ½/etc/dhcpd.conf,Ò²¿ÉÒÔÊÖ¹¤±àд
#cp /usr/share/doc/dhcp-*/dhcp.conf.sample/dev/dhcpd.conf
5.ÐÞ¸ÄÅäÖÃÎļþ/etc/dhcpd.conf,Ïà¹Ø²ÎÊýÒÔÏÂ˵Ã÷
ddns-update-style interim;
#ÅäÖÃʹÓùý¶ÉÐÔ DHCP-DNS»¥¶¯¸üÐÂģʽ
ignore client-updates;
#ºöÂÔ¿Í»§¶Ë¸üÐÂ
subnet 192.168.0.0 netmask 255.255.255.0{
#ÉèÖÃ×ÓÍøÉùÃ÷
#--default getway
optionrouters 192.168.0.1
#ÉèÖÃÈ±Ê¡Íø¹Üλ192.168.0.1
option subnet-mask 255.255.255.0
#ÉèÖÿͻ§¶ËµÄ×ÓÍøÑÚÂë
option nis-domain"domain.org"
#Ϊ¿Í»§ÉèÖÃNISÓò
option domain-name"domain.org"
#λ¿Í»§ÉèÖÃÓòÃû
option domain-name0servers 192.168.1.1
#Ϊ¿Í»§ÉèÖÃÓòÃû·þÎñÆ÷
option time-offset-18000;#Eastern Standard Time
#ÉèÖÃÆ«ÒÆÊ±¼ä
#option ntp- ......

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GUI£©¡£ÔÚ±¾ÎÄÖУ¬ÎÒÃǽ«¼¯ÖÐÌÖÂÛÉæ¼°ÕâÈý²ãµÄһЩ»ù±¾¸ÅÄÉîÈëÁ˽âÒýµ¼×°ÔسÌÐò¡¢Äں˺ÍÎļþϵͳÊÇÈçºÎ½»»¥µÄ£»²¢½«Ñо¿¿ÉÓÃÓÚÎļþϵͳ¡¢GUI
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Boot Record£¬(MBR)£©ÖУ¬»òÕß×°Èë Linux פÁôµÄ´ÅÅ̵ĵÚÒ»¸öÉÈÇøÖС£Í¨³££¬ÔŲ́ʽ»ú»òÆäËüϵͳÉÏ£¬BIOS
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