Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

linux½ø³ÌͨÐÅ ÐźÅÁ¿Ê¹ÓÃ

±êÌ⣺Linux½ø³ÌͨÐÅ-ʹÓÃÐźÅÁ¿
Ò»¡¢Ïà¹ØÖªÊ¶
 ÐźÅÁ¿£ºÒ»¸öÕûÊý£»
  ´óÓÚ»òµÈÓÚ0ʱ´ú±í¿É¹©²¢·¢½ø³ÌʹÓõÄ×ÊԴʵÌåÊý£»
  СÓÚ0ʱ´ú±íÕýÔڵȴýʹÓÃÁÙ½çÇøµÄ½ø³ÌÊý£»
  ÓÃÓÚ»¥³âµÄÐźÅÁ¿³õʼֵӦ´óÓÚ0£»
  Ö»ÄÜͨ¹ýP¡¢VÔ­Óï²Ù×÷¶ø¸Ä±ä£»
 ÐźÅÁ¿ÔªËØ×é³É£º
  1¡¢±íʾÐźÅÁ¿ÔªËصÄÖµ£»
  2¡¢×îºó²Ù×÷ÐźÅÁ¿ÔªËصĽø³ÌID
  3¡¢µÈ´ýÐźÅÁ¿ÔªËØÖµ+1µÄ½ø³ÌÊý£»
  4¡¢µÈ´ýÐźÅÁ¿ÔªËØÖµÎª0µÄ½ø³ÌÊý£»
 
¶þ¡¢Ö÷Òªº¯Êý
 
 1.1 ´´½¨ÐźÅÁ¿
 int semget(
  key_t key,  //±êʶÐźÅÁ¿µÄ¹Ø¼ü×Ö£¬ÓÐÈýÖÖ·½·¨£º1¡¢Ê¹ÓÃIPC——PRIVATEÈÃϵͳ²úÉú£¬
     // 2¡¢Ìôѡһ¸öËæ»úÊý£¬3¡¢Ê¹ÓÃftok´ÓÎļþ·¾¶ÃûÖвúÉú
  int nSemes,  //ÐźÅÁ¿¼¯ÖÐÔªËØ¸öÊý
  int flag  //IPC_CREAT£»IPC_EXCL Ö»ÓÐÔÚÐźÅÁ¿¼¯²»´æÔÚʱ´´½¨
 )
 ³É¹¦£º·µ»ØÐźÅÁ¿¾ä±ú
 Ê§°Ü£º·µ»Ø-1
 
 1.2 ʹÓÃftokº¯Êý¸ù¾ÝÎļþ·¾¶Ãû²úÉúÒ»¸ö¹Ø¼ü×Ö
 key_t ftok(const char *pathname,int proj_id);
 Â·¾¶Ãû³Æ±ØÐëÓÐÏàӦȨÏÞ
 
 1.3 ¿ØÖÆÐźÅÁ¿
 int semctl(
  int semid,  //ÐźÅÁ¿¼¯µÄ¾ä±ú
  int semnum,  //ÐźÅÁ¿¼¯µÄÔªËØÊý
  int cmd,  //ÃüÁî
  /*union senum arg */... // 
 )
 ³É¹¦£º·µ»ØÏàÓ¦µÄÖµ
 Ê§°Ü£º·µ»Ø-1
 
 ÃüÁîÏêϸ˵Ã÷:
 cmd:   IPC_RMID ɾ³ýÒ»¸öÐźÅÁ¿
  IPC_EXCL Ö»ÓÐÔÚÐźÅÁ¿¼¯²»´æÔÚʱ´´½¨
  IPC_SET ÉèÖÃÐźÅÁ¿µÄÐí¿ÉȨ
  SETVAL ÉèÖÃÖ¸¶¨ÐźÅÁ¿µÄÔªËØµÄֵΪ agc.val
  GETVAL »ñµÃÒ»¸öÖ¸¶¨ÐźÅÁ¿µÄÖµ
  GETPID »ñµÃ×îºó²Ù×Ý´ËÔªËØµÄ×îºó½ø³ÌID
  GETNCNT »ñµÃµÈ´ýÔªËØ±äΪ1µÄ½ø³ÌÊý
  GETZCNT »ñµÃµÈ´ýÔªËØ±äΪ0µÄ½ø³ÌÊý
 
 union senum ¶¨ÒåÈçÏ£º
 union senum{
  int val;
  struct semid_ds *buf;
  unsigned short * array;
 }agc;
 ÆäÖÐ semid_ds ¶¨ÒåÈçÏ£º
 struct semid_ds{
  struct ipc_pem sem_pem;  //operation pemission struct
  time_t sem_otime;  //last semop()time
  time_t sem_ctime;  //last


Ïà¹ØÎĵµ£º

ÔÚLinuxÏÂÅäÖÃjdk»·¾³

Ò»¡¢JDKÏÂÔØ:http://java.sun.comÏÂÔØ×Ô½âѹ°ü:jdk.bin
#sh jdk.bin °´ÌáʾѡÔñyes¡£µ½´ËJDKÒѾ­°²×°Íê³É
¶þ¡¢ÉèÖû·¾³±äÁ¿
¼ÙÈçjdk°²×°µ½ÁË/usrĿ¼Ï¡£ÔÚ/etc/profileÖеÄ×îµ×¶ËÀïдÈëÈçÏÂ:
#vi /etc/profile
#Set Environment by NetSeek (2005/9/5)
export JAVA_HOME=/usr/jdk
export JRE_HOME=/usr/jdk/jre
PA ......

LinuxÏÂMySQL5.1µÄ°²×°

×î½üÏëÔÚ·þÎñÆ÷ÉÏÊÔÊÔMySQL5.1µÄ·ÖÇø£¬ÓÚÊǾÍÏë×Å×°¸öMySQL5.1£¬¾­¹ýÍ´¿àµÄÒ»¶Î¾­Àúºó£¬ÖÕÓÚÕÒ¸öÏÂÃæ×°¸öºÜºÃµÄ½Ì³Ì£¬ÌûÉÏÀ´±¸Íü¡£
1¡¢MySQLÃâ°²×°°æ/¶þ½øÖưæÈí¼þ£¬²»ÓñàÒ룬ÏÂÔØµØÖ·£º
     http://dev.mysql.com/downloads/
     Îļþ¸ñʽ£ºMYSQL-VERSION-OS.tar.gz
2¡¢´ ......

ÓÃVNCʵÏÖÔ¶³Ì×ÀÃæ¹²Ïí(Ö§³ÖWindows, Linux, ¡­)

VNC£¬È«³ÆÎªVirtual Network Computing£¬ËüÊÇÒ»¸ö×ÀÃæ¹²Ïíϵͳ¡£ËüµÄ¹¦ÄÜ£¬ÀàËÆÓÚwindowsÖеÄÔ¶³Ì×ÀÃæ¹¦ÄÜ¡£VNCʹÓÃÁËRFB(Remote FrameBuffer£¬Ô¶³ÌÖ¡»º³å£©Ð­ÒéÀ´ÊµÏÖÔ¶³Ì¿ØÖÆÁíÍâһ̨¼ÆËã»ú¡£Ëü°Ñ¼üÅÌ¡¢Êó±ê¶¯×÷·¢Ë͵½Ô¶³Ì¼ÆËã»ú£¬²¢°ÑÔ¶³Ì¼ÆËã»úµÄÆÁÄ»·¢»Øµ½±¾µØ¡£
VNC¼¼ÊõÓëÆ½Ì¨Î޹أ¬VNC Viewer¿ÉÒÔºÍVNC ServerÔÚ²»Í ......

UNIX ÓëLinuxµÄ±È½Ï

    UNIXÊÇÀúÊ·×îÓÆ¾ÃµÄͨÓòÙ×÷ϵͳ¡£1969Ä꣬ÃÀ¹ú±´¶ûʵÑéÊÒµÄK.ThompsonºÍD.M.RitchieÔÚ¹æÄ£½ÏС¼°½Ï¼òµ¥µÄ·Öʱ²Ù×÷ϵͳMULTICSµÄ»ù´¡ÉÏ¿ª·¢³öUNIX, µ±Ê±ÊÇÔÚDECµÄPDP—7СÐͼÆËã»úÉÏʵÏֵģ¬1970ÄêÕýʽͶÈëÔËÐС£´ËºóÊýÄ꣬UNIXÒ»Ö±ÊÇÒ»¸öÏÞÓÚÔÚAT&TÄÚ²¿Ê¹ÓõIJÙ×÷ϵͳ¡£1971Ä꣬·¢Õ¹³öÒÔ PDP- ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ