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
ÔÚµ±Ç°Ä¿Â¼ÏÂËÑË÷Ö¸¶¨Îļþ£º
find . -name test.txt
ÔÚµ±Ç°Ä¿Â¼ÏÂÄ£ºýËÑË÷Îļþ£º
find . -name '*.txt'
ÔÚµ±Ç°Ä¿Â¼ÏÂËÑË÷ÌØ¶¨ÊôÐÔµÄÎļþ£º
find . -amin -10 # ²éÕÒÔÚϵͳÖÐ×îºó10·ÖÖÓ·ÃÎʵÄÎļþ
find . -atime -2 # ²éÕÒÔÚϵͳÖÐ×îºó48Сʱ·ÃÎʵÄÎļþ
find . -empty # ²éÕÒÔÚϵͳÖÐΪ¿ÕµÄÎļþ»òÕßÎļþ¼Ð
find . -g ......
×÷ΪLinuxϵijÌÐò¿ª·¢ÈËÔ±£¬´ó¼ÒÒ»¶¨¶¼Óöµ½¹ýMakefile£¬ÓÃmakeÃüÁîÀ´±àÒë×Ô¼ºÐ´µÄ³ÌÐòȷʵÊǺܷ½±ã¡£Ò»°ãÇé¿öÏ£¬´ó¼Ò¶¼ÊÇÊÖ¹¤Ð´Ò»¸ö¼òµ¥Makefile£¬Èç¹ûÒªÏëд³öÒ»¸ö·ûºÏ×ÔÓÉÈí¼þ¹ßÀýµÄMakefile¾Í²»ÄÇôÈÝÒ×ÁË¡£
¡¡¡¡ÔÚ±¾ÎÄÖУ¬½«¸ø´ó¼Ò½éÉÜÈçºÎʹÓÃautoconfºÍautomakeÁ½¸ö¹¤¾ßÀ´°ïÖúÎÒÃÇ×Ô¶¯µØÉú³É·ûºÏ×ÔÓÉÈí¼þ¹ßÀýµÄMa ......
1¡¢È¨Ï޵IJ鿴
ls -l ÎļþÃû³Æ
2¡¢È¨ÏÞÐÞ¸Ä
chmod abc file
ÆäÖÐa,b,c¸÷Ϊһ¸öÊý×Ö£¬·Ö±ð±íʾUser¡¢Group¡¢¼°OtherµÄȨÏÞ¡£
r=4£¬w=2£¬x=1£¬x±êʾִÐÐȨÏÞ¡£ÈôÒªrwxÊôÐÔÔò4+2+1=7£»ÈôÒ ......
Ò»¡¢ÏÂÔØjdk1.5
´Óhttp://www.sun.com/ÍøÕ¾ÏÂÔØjdk1.5
ÏÂÔØ£ºjdk-1_5_0_15-linux-i586-rpm.bin
¶þ¡¢°²×°jdk
1.
# chmod +x jdk-1_5_0_15-linux-i586-rpm.bin
# ./jdk-1_5_0_15-linux-i586-rpm.bin
°´Ìáʾ°´ÊäÈëyes,ÔÚͬһĿ¼»áµÃµ½Ò»¸öjdk-1_5_0_15-linux-i586-rpm
ͨ¹ý# rpm –ivh jdk-1 ......
linux file lock
linuxµÄÎļþËø·ÖΪÁ½ÖÖ£º
Ò»ÖÖÊÇadvasory lock£¬Ö»Äܱ£Ö¤½ø³ÌÄÚ¶Ôͬһ¸öÎļþËøµÄ»¥³âÓÐЧ£¬µ«ÊǶà¸ö½ø³Ì¿ÉÒÔͬʱ¶ÔÒ»¸öÎļþ¼Ó»¥³âµÄËø£¬ËùÒÔÕâÖÖËøÊǼÓÔÚfile ½á¹¹ÉÏ;Ò»ÖÖÊÇmandatory lock£¬ÕâÖÖËø¿ÉÒÔ±£Ö¤¶à¸ö½ø³ÌÎÞ·¨¶Ôͬһ¸öÎļþ¶¼¼ÓÉÏ»¥³âËø£¬ËùÒÔÕâÖÖËøÊǼÓÔÚinode ½á¹¹Éϵġ£
µ±¼Ómandatroy lockÊ ......