Linux½ø³Ì¼äͨѶËùʹÓõÄϵͳµ÷Óú¯Êý
´°Ìå¶¥¶Ë
Ë÷Òý£º
1.fork¡¢execºÍexit¶ÔIPC¶ÔÏóµÄÓ°Ïì
2.fcntl¼ÇÂ¼Ëø
3.¹ÜµÀºÍFIFOµÄÊôÐÔ
4.¹ÜµÀºÍFIFOµÄÏÞÖÆ
5.pipeº¯Êý
6.popenºÍpclose
7.mkfifoº¯Êý
8.System V IPC¹²ÐÔÃèÊö
9.msqid_ds½á¹¹
10.msggetº¯Êý
11.msgsndº¯Êý
12.msgrcvº¯Êý
13.msgctlº¯Êý
14.ÔÚSystem VÏûÏ¢¶ÓÁÐÉÏʹÓÃselectºÍpoll
15.semid_ds½á¹¹
16.semgetº¯Êý
17.semopº¯Êý
18.semctlº¯Êý
19.shmid_ds½á¹¹
20.shmgetº¯Êý
21.shmatº¯Êý
22.shmdtº¯Êý
23.shmctlº¯Êý
24.mmapº¯Êý
25.munmapº¯Êý
26.msyncº¯Êý
27.ÄäÃûÄÚ´æÓ³Éä
1.fork¡¢execºÍexit¶ÔIPC¶ÔÏóµÄÓ°Ïì
IPCÀàÐÍ
fork
exec
_exit
¹ÜµÀºÍFIFO
×Ó½ø³ÌÈ¡µÃ¸¸½ø³ÌµÄËùÓдò¿ª×ŵÄÃèÊö×ֵĿ½±´
ËùÓдò¿ªµÄÃèÊö×Ö¼ÌÐø´ò¿ª×Å£¬³ý·ÇÒÑÉèÖÃÃèÊö×ÖµÄFD_CLOEXECλ
¹Ø±ÕËùÓдò¿ª×ŵÄÃèÊö×Ö£¬×îºóÒ»¸ö¹Ø±Õʱɾ³ý¹ÜµÀ»òFIFOÖвÐÁôµÄËùÓÐÊý¾Ý
PosixÏûÏ¢¶ÓÁÐ
×Ó½ø³ÌÈ¡µÃ¸¸½ø³ÌµÄËùÓдò¿ª×ŵÄÏûÏ¢¶ÓÁÐÃèÊö×ֵĿ½±´
¹Ø±ÕËùÓдò¿ª×ŵÄÏûÏ¢¶ÓÁÐÃèÊö×Ö
¹Ø±ÕËùÓдò¿ª×ŵÄÏûÏ¢¶ÓÁÐÃèÊö×Ö
System VÏûÏ¢¶ÓÁÐ
ûÓÐЧ¹û
ûÓÐЧ¹û
ûÓÐЧ¹û
Posix»¥³âËø¡¢Ìõ¼þ±äÁ¿¡¢¶ÁÐ´Ëø¡¢»ùÓÚÄÚ´æµÄÐźŵÆ
ÈôפÁôÔÚ¹²ÏíÄÚ´æÖжøÇÒ¾ßÓнø³Ì¼ä¹²ÏíÊôÐÔ£¬Ôò¹²Ïí
³ý·ÇÔÚ¼ÌÐø´ò¿ª×ŵĹ²ÏíÄÚ´æÖжøÇÒ¾ßÓнø³Ì¼ä¹²ÏíÊôÐÔ£¬·ñÔòÏûʧ
³ý·ÇÔÚ¼ÌÐø´ò¿ª×ŵĹ²ÏíÄÚ´æÖжøÇÒ¾ßÓнø³Ì¼ä¹²ÏíÊôÐÔ£¬·ñÔòÏûʧ
PosixÓÐÃûÐźŵÆ
¸¸½ø³ÌÖÐËùÓдò¿ª×ŵÄÓÐÃûÐźŵÆÔÚ×Ó½ø³ÌÖмÌÐø´ò¿ª×Å
¹Ø±ÕËùÓдò¿ª×ŵÄÓÐÃûÐźŵÆ
¹Ø±ÕËùÓдò¿ª×ŵÄÓÐÃûÐźŵÆ
System VÐźŵÆ
×Ó½ø³ÌÖÐËùÓÐsemadjÖµ¶¼ÖÃΪ0
ËùÓÐsemadjÖµ¶¼Ð¯ÈëгÌÐòÖÐ
ËùÓÐsemadjÖµ¶¼¼Óµ½ÏàÓ¦µÄÐźŵÆÉÏ
fcntl¼Ç¼ÉÏËø
×Ó½ø³Ì²»¼Ì³Ð¸¸½ø³Ì³ÖÓеÄËø
Ö»ÒªÃèÊö×Ö¼ÌÐø´ò¿ª×Å£¬Ëø¾Í²»±ä
½â¿ªÓɽø³Ì³ÖÓеÄËùÓÐδ´¦ÀíµÄËø
mmapÄÚ´æÓ³ÉäºÍPosix¹²ÏíÄÚ´æÇø
¸¸½ø³ÌÖеÄÄÚ´æÓ³Éä´æÁôµ½×Ó½ø³ÌÖÐ
È¥³ýÄÚ´æÓ³Éä
È¥³ýÄÚ´æÓ³Éä
System V¹²ÏíÄÚ´æÇø
¸½½Ó×ŵĹ²ÏíÄÚ´æÇøÔÚ×Ó½ø³ÌÖмÌÐø¸½½Ó×Å
¶Ï¿ªËùÓи½½Ó×ŵĹ²ÏíÄÚ´æÇø
¶Ï¿ªËùÓи½½Ó×ŵĹ²ÏíÄÚ´æÇø
ÃÅ
×Ó½ø³ÌÈ¡µÃ¸¸½ø³ÌµÄËùÓдò¿ª×ŵÄÃèÊö×Ö£¬µ«Êǿͻ§ÔÚÃÅÃèÊö×ÖÉϼ¤»îÆä¹ý³Ìʱ£¬Ö»Óи¸½ø³ÌÊÇ·þÎñÆ÷
ËùÓÐÃÅÃèÊö×Ö¶¼Ó¦¹Ø±Õ£¬ÒòΪËüÃÇ´´½¨Ê±ÉèÖÃÁËFD_CLOEXECλ
¹Ø±ÕËùÓдò¿ª×ŵÄÃèÊö×Ö
2.fcntl¼ÇÂ¼Ëø
UnixÄÚºËûÓÐÎļþÄڼǼµÄ¸ÅÄÕâÀïµÄ¼Ç¼ÊÇÖ¸×Ö½Ú·¶Î§£¨byte range£©¡£
Pos
Ïà¹ØÎĵµ£º
Õ⼸ÌìLinux·þÎñÆ÷ºÜÂý,ºÜ׿±ÕÒ²»µ½½â¾ö°ì·¨!ºó°Ù¶ÈÏà¹Ø×ÖÑÛ,²éÕÒµ½ÊÇMySQLµÄÎÊÌâ,
ÈçÏÂΪ½â¾ö·½°¸
:
Á¬½ÓMySQLËÙ¶ÈÂýµÄ½â¾ö·½·¨.
PHPÔ¶³ÌÁ¬½ÓMYSQLËÙ¶ÈÂý,ÓÐʱԶ³ÌÁ¬½Óµ½MYSQLÓÃʱ4-20Ãë²»µÈ,±¾µØÁ¬½ÓMYSQLÕý³£,³öÏÖÕâÖÖÎÊÌâµÄÖ÷ÒªÔÒòÊÇ,ĬÈϰ²×°µÄ
MYSQL¿ªÆôÁËDNSµÄ·´Ïò½âÎö,ÔÚMY.CNF(UNIX»òLINUXϵͳÏÂ)»òMY.INI ......
µçÄÔÖбز»¿ÉÉٵľÍÊDzÙ×÷ϵͳ¡£¶øLinuxµÄ·¢Õ¹·Ç³£Ñ¸ËÙ£¬Óиϳ¬Î¢ÈíµÄÇ÷ÊÆ¡£ÕâÀï½éÉÜLinuxµÄ֪ʶ£¬ÈÃÄãѧºÃÓ¦ÓÃLinuxϵͳ¡£±ÈÈçÒª°Ñ/etc/apache/binĿ¼Ìí¼Óµ½PATHÖУ¬·½·¨ÓÐÈý£º
1.#PATH=$PATH:/etc/apache/bin
ʹÓÃÕâÖÖ·½·¨,Ö»¶Ôµ±Ç°»á»°ÓÐЧ£¬Ò²¾ÍÊÇ˵ÿµ±µÇ³ö»ò×¢ÏúϵͳÒÔºó£¬PATH ÉèÖþͻáʧЧ
2.#vi /etc/profile
......
1.date :ÏÔʾÈÕÆÚ
%:::z Ê±Çø
2. cal :ÏÔʾÈÕÀú£¨ºáÅÅ£©£¬ncal£¨ÊúÅÅ£©
3. bc :µ÷ÓüÆËãÆ÷
ÓÃ/×÷³ý·¨ÔËËãʱ£¬¿ÉÏÈÓÃÖ¸Áî scale=number£¨number±íʾÏÔʾµÄСÊýµãλÊý£© ÔÙ×ö³ý·¨ÔËË㣬ʹµÃ¿ÉÒÔÏÔʾСÊýµãºó(number)λ¡££¨bcĬÈÏÖ»ÏÔʾÕûÊý£©
Í˳ö¼ÆËãÆ÷£º quit
4.[Tab] ......
ÍøÉÏÕÒÁËÏÂLinux½ø³Ì¼ä»¥³âµÄʵÏÖ£¬Á½ÖÖ·½·¨£¬semaphore ºÍ ÎļþËø¡£¸Õ¿ªÊ¼Ò²³¢ÊÔÓÃsemaphoreÀ´ÊµÏÖ£¬µ«·¢ÏÖsem_waitºÍsingalÎÞ·¨ÊµÏÖWindowsÏÂCirtSec£¬¶ø²ÉÓÃÁ˺óÕßÎļþËø£»
µ«¶ÔÓÚ¶ÁÐ´ËøÀ´ËµÊµÓÃÎļþËøÊµÏÖ£¬´æÔÚÒ»¶¨µÄ²»×㣬Ëü·Ö¿ªÁ˶ÁÐ´Ëø£¬¶øÃ»Óзֿª½â¶ÁÐ´Ëø£¬ÀûÓÃUnLockÀ´Í³Ò»½â¶ÁÐ´Ëø£¬¶ÔÓÚÕâ½ø³Ì¼ä¶ÁÐ´ËøµÄʵÏÖ£ ......
GPIO£¨General Purpose Input/OutputµÄËõд£©¾ÍÊÇоƬµÄÒý½Å£¬Òý½ÅÊǿɱà³ÌµÄ¿É¶ÔÒý½ÅµÄ¹¤×÷ģʽ½øÐÐÉèÖãºÊäÈëģʽ(¼ì²âÊäÈëÐźÅ)£¬Êä³öģʽ(Êä³ö0»ò1)£¬¸ß×è״̬(³£ÓÃÓÚADת»»)£¬»¹ÓнûÖ¹»òÔÊÐíÉÏÄÚ²¿ÏÂÀµç×è(ÉÏÀ£º¹Ü½Åͨ¹ýµç×è½Ó¸ßµçƽ£¬ÏÂÀ£º¹Ü½Åͨ¹ýµç×è½ÓµØ£¬Ò²¿ÉÒÔÍⲿ½ÓÉÏÀ»òÏÂÀµç×è)£¬»¹ÓйܽŸ´Óõȹ¦ÄÜ£¬ ......