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

LINUXÏÂÎļþ²Ù×÷º¯Êý

 
LinuxµÄÎļþ²Ù×÷APIÉæ¼°µ½´´½¨¡¢´ò¿ª¡¢¶ÁдºÍ¹Ø±ÕÎļþ¡£
1.linux API
¡¡¡¡´´½¨
int creat(const char *filename, mode_t mode);
¡¡¡¡²ÎÊýmodeÖ¸¶¨Ð½¨ÎļþµÄ´æÈ¡È¨ÏÞ£¬ËüͬumaskÒ»Æð¾ö¶¨ÎļþµÄ×îÖÕȨÏÞ£¨mode&umask£©£¬ÆäÖÐumask´ú±íÁËÎļþÔÚ´´½¨Ê±ÐèҪȥµôµÄһЩ´æÈ¡È¨ÏÞ¡£umask¿Éͨ¹ýϵͳµ÷ÓÃumask()À´¸Ä±ä£º
int umask(int newmask);
´ò¿ª
int open(const char *pathname, int flags);
int open(const char *pathname, int flags, mode_t mode);
¡¡¡¡openº¯ÊýÓÐÁ½¸öÐÎʽ£¬ÆäÖÐpathnameÊÇÎÒÃÇÒª´ò¿ªµÄÎļþÃû(°üº¬Â·¾¶Ãû³Æ£¬È±Ê¡ÊÇÈÏΪÔÚµ±Ç°Â·¾¶ÏÂÃæ)£¬flags¿ÉÒÔÈ¥ÏÂÃæµÄÒ»¸öÖµ»òÕßÊǼ¸¸öÖµµÄ×éºÏ£º
±êÖ¾
º¬Òå
O_RDONLY
ÒÔÖ»¶ÁµÄ·½Ê½´ò¿ªÎļþ
O_WRONLY
ÒÔֻдµÄ·½Ê½´ò¿ªÎļþ
O_RDWR
ÒÔ¶ÁдµÄ·½Ê½´ò¿ªÎļþ
O_APPEND
ÒÔ×·¼ÓµÄ·½Ê½´ò¿ªÎļþ
O_CREAT
´´½¨Ò»¸öÎļþ
O_EXEC
Èç¹ûʹÓÃÁËO_CREAT¶øÇÒÎļþÒѾ­´æÔÚ£¬¾Í»á·¢ÉúÒ»¸ö´íÎó
O_NOBLOCK
ÒÔ·Ç×èÈûµÄ·½Ê½´ò¿ªÒ»¸öÎļþ
O_TRUNC
Èç¹ûÎļþÒѾ­´æÔÚ£¬Ôòɾ³ýÎļþµÄÄÚÈÝ
 
 
¡¡¡¡O_RDONLY¡¢O_WRONLY¡¢O_RDWRÈý¸ö±êÖ¾Ö»ÄÜʹÓÃÈÎÒâµÄÒ»¸ö¡£
     mode¿ÉÒÔÊÇÒÔÏÂÇé¿öµÄ×éºÏ£º
±êÖ¾
º¬Òå
S_IRUSR
Óû§¿ÉÒÔ¶Á
S_IWUSR
Óû§¿ÉÒÔд
S_IXUSR
Óû§¿ÉÒÔÖ´ÐÐ
S_IRWXU
Óû§¿ÉÒÔ¶Á¡¢Ð´¡¢Ö´ÐÐ
S_IRGRP
×é¿ÉÒÔ¶Á
S_IWGRP
×é¿ÉÒÔд
S_IXGRP
×é¿ÉÒÔÖ´ÐÐ
S_IRWXG
×é¿ÉÒÔ¶ÁдִÐÐ
S_IROTH
ÆäËûÈË¿ÉÒÔ¶Á
S_IWOTH
ÆäËûÈË¿ÉÒÔд
S_IXOTH
ÆäËûÈË¿ÉÒÔÖ´ÐÐ
S_IRWXO
ÆäËûÈË¿ÉÒÔ¶Á¡¢Ð´¡¢Ö´ÐÐ
S_ISUID
ÉèÖÃÓû§Ö´ÐÐID
S_ISGID
ÉèÖÃ×éµÄÖ´ÐÐID
¡¡¡¡³ýÁË¿ÉÒÔͨ¹ýÉÏÊöºê½øÐГ»ò”Âß¼­²úÉú±êÖ¾ÒÔÍ⣬ÎÒÃÇÒ²¿ÉÒÔ×Ô¼ºÓÃÊý×ÖÀ´±íʾ£¬Linux×ܹ²ÓÃ5¸öÊý×ÖÀ´±íʾÎļþµÄ¸÷ÖÖȨÏÞ£ºµÚһλ±íʾÉèÖÃÓû§ID£»µÚ¶þλ±íʾÉèÖÃ×éID£»µÚÈýλ±íʾÓû§×Ô¼ºµÄȨÏÞλ£»µÚËÄλ±íʾ×éµÄȨÏÞ£»×îºóһλ±íʾÆäËûÈ˵ÄȨÏÞ¡£Ã¿¸öÊý×Ö¿ÉÒÔÈ¡1(Ö´ÐÐȨÏÞ)¡¢2(дȨÏÞ)¡¢4(¶ÁȨÏÞ)¡¢0(ÎÞ)»òÕßÊÇÕâЩֵµÄºÍ¡£ÀýÈ磬Ҫ´´½¨Ò»¸öÓû§¿É¶Á¡¢¿Éд¡¢¿ÉÖ´ÐУ¬µ«ÊÇ×éûÓÐȨÏÞ£¬ÆäËûÈË¿ÉÒÔ¶Á¡¢¿ÉÒÔÖ´ÐеÄÎļþ£¬²¢ÉèÖÃÓû§IDλ¡£ÄÇô£¬ÎÒÃÇÓ¦¸ÃʹÓõÄģʽÊÇ1(ÉèÖÃÓû§ID)¡¢0(²»ÉèÖÃ×éID)¡¢7(1+2+4£¬¶Á¡¢Ð´¡¢Ö´ÐÐ)¡¢0(ûÓÐȨÏÞ)¡¢5(1+4£¬¶Á¡¢Ö´ÐÐ)¼´10705£º
open("test", O_CREAT, 10705);
¡¡¡¡ÉÏÊöÓï¾äµÈ¼ÛÓÚ£º
open("test", O_CREAT, S_IRWXU | S_IROTH | S_


Ïà¹ØÎĵµ£º

linuxÖÐoracleµÄÈÕ³£Î¬»¤ÃüÁî

1.  ¼ì²éOracleµÄ½ø³Ì
$  ps -ef|grep "ora_"|grep -v grep
  oracle  5998     1  0 11:15:59 ?        0:01 ora_j000_PPRD10
  oracle  2968     1  ......

Linux Ïß³ÌÄ£Ð͵ıȽϣºLinuxThreads ºÍ NPTL

 Õª×Ô£ºhttp://www.ibm.com/developerworks/cn/linux/l-threading.html
LinuxThreads ÏîÄ¿×î³õ½«¶àÏ̵߳ĸÅÄîÒýÈëÁË Linux®£¬µ«ÊÇ LinuxThreads ²¢²»×ñÊØ
POSIX Ï̱߳ê×¼¡£¾¡¹Ü¸üÐ嵀 Native POSIX Thread
Library£¨NPTL£©¿âÌî²¹ÁËһЩ¿Õ°×£¬µ«ÊÇÕâÈÔÈ»´æÔÚһЩÎÊÌâ¡£±¾ÎÄΪÄÇЩÐèÒª½«×Ô¼ºµÄÓ¦ÓóÌÐò´Ó LinuxTh ......

Linux¸÷¸öĿ¼µÄ×÷ÓÃ

 
¸Õ¿ªÊ¼Ñ§Linux£¬¿´µ½ÄÇЩ·×·±¸´ÔÓµÄÄ¿Â¼ÕæÊǸоõÓеãÊÖ×ãÎ޴룬ÏÖÔÚ×ÜËãÖªµÀ×Ô¼ºµÄÈí¼þÓ¦¸Ã×°ÔÚ/usrĿ¼Ï£¬ºÇºÇ¡«¡«
ÏÂÃæÊǸ÷¸öĿ¼µÄ˵Ã÷£º
/bin
¸ÃĿ¼Öдæ·ÅLinuxµÄ³£ÓÃÃüÁÔÚÓеİ汾ÖÐÊÇһЩºÍ¸ùĿ¼ÏÂÏàͬµÄĿ¼¡£
/boot
¸ÃĿ¼Ï´æ·ÅµÄ¶¼ÊÇϵͳÆô¶¯Ê±ÒªÓõ½µÄ³ÌÐò£¬µ±ÓÃliloÒýµ¼Linuxʱ£¬»áÓõ½Õâ ......

ʵս linuxÀ¶ÑÀ±à³ÌÖ®(°Ë) hci ЭÒé Ó¦Óñà³ÌʵÏÖ

  ¶ÔÓÚhci²ãµÄ±à³Ì ÊÇÏ൱¸´Ô ¹¦ÄÜÒ²ÊÇÇ¿´óµÄ,½¨ÒéѧϰÕß È¥¶Ábluez-libÖеÄhciºÍsdp
  ÕâÀï¼òÒª½éÉÜ ÎÒÔÚ¿ª·¢¹«Ë¾µÄÏîÄ¿ÖÐµÄ Ò»¸öСµÄ»ù´¡¶¯×÷. ¸Ã±à³ÌµÄ¹ý³Ì»ù±¾ÀíÇåÁËhciºÍsdpµÄÏνӺÍÓ¦ÓÃ.Ï£Íû¶ÔѧϰÕßÓаïÖú
˵Ã÷Óв»µ½Ö®´¦,Íû´ó¼Ò¶à¶àÑо¿,²»Òª¾ÖÏÞ,ÿ¸öÈËÓÐ×Ô¼ºµÄ·½Ê½,Ò²ÐíÄãµÄÔÚÂß¼­Ëã·¨ÉϱÈÎҵĺÃ! ......

LinuxÓëWindowsÔÚÊ®Èý·½Ãæ´ó¶Ô¾ö(Ò»)

 ±¾ÎÄÀ´×ÔÍøÂç,°æÈ¨¹éÔ­×÷ÕßËùÓС£Èç¹ûÄúÈÏΪ±¾ÆªÎÄÕÂÇÖ·¸ÁËÄúµÄȨÀû,ÇëÔÚµÚһʱ¼äÁôÑÔ¸ø±¾Õ¾,±¾Õ¾½«»á¼°Ê±É¾³ý¡£
¡¡¡¡LinuxÊÇÒ»Ì×Ãâ·ÑʹÓúÍ×ÔÓÉ´«²¥µÄÀàUNIX²Ù×÷ϵͳ£¬Ö÷ÒªÓÃÓÚ»ùÓÚIntel x86ϵÁÐCPUµÄ¼ÆËã»úÉÏ¡£LinuxϵͳÊÇÓÉÈ«ÊÀ½ç¸÷µØµÄ³ÉǧÉÏÍòµÄ³ÌÐòÔ±Éè¼ÆºÍʵÏֵ쬯äÄ¿µÄÊǽ¨Á¢²»ÊÜÈκÎÉÌÆ·»¯Èí¼þµÄ°æÈ¨ËùÖÆÔ ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ