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

linuxÉ豸ºÅÖ®²Ù×÷

×÷ÕߣºÀîÇ¿,»ªÇåÔ¶¼ûǶÈëʽѧԺ½²Ê¦¡£
ÔÚLinuxÉ豸Çý¶¯ÖУ¬É豸ºÅÉèÒ»¸öºÜÖØÒªµÄ¸ÅÄîºÍ±äÁ¿¡£²»ÂÛÊÇÖ÷É豸ºÅ£¬»¹ÊÇ´ÎÉ豸ºÅ£¬ÔÚÉ豸Çý¶¯Öж¼Õ¼¾ÝÁ˺ÜÖØÒªµÄµØÎ»¡£ÄÇôËûÔÚKernelÖÐÊÇÈçºÎ²Ù×÷µÄ£¿Õâ¸öÊý¾Ý½á¹¹¶¼ÊÇͨ¹ýÄÇЩº¯Êý¿ÉÒÔºÜÈÝÒ×µÄÔÚÎÒÃÇдLinuxÉ豸Çý¶¯Ä£¿éʱ±»ÎÒÃÇËùʹÓÃÄØ£¿
ÔÚinclude/linux/type.hÎļþÖÐÎÒÃÇÄÜ¿´µ½Ò»¸ö¹ØÓÚdev_tµÄ¶¨ÒåÈçÏ£º
        ...
        typedef __u32 __kernel_dev_t;
typedef __kernel_fd_set fd_set;
        typedef __kernel_dev_t dev_t;
        ...
´ÓÕâ¸ö¶¨ÒåÖÐÎÒÃÇÄÜ¿´µ½dev_tÊÇÒ»¸öÎÞ·ûºÅµÄ32λµÄÕûÐÍ¡£
Ê×ÏÈÎÒÃÇÐèҪ˵Ã÷µÄÊÇ£¬ÔÚlinuxÖÐÖ÷´ÎÉ豸ºÅÊÇ·ÅÖÃÔÚÒ»¸öÎÞ·ûºÅµÄ32λµÄÕûÐÍÖУ¬ÄÇôÕâ32λÕûÐͶÔÓÚÖ÷´ÎÉ豸ºÅÈçºÎ·ÖÅäÄØ£¿
´ÓÔ´´úÂëÖÐÎÒÃÇ¿ÉÒÔ¿´µ½£¬Ö÷É豸ºÅÕ¼¾Ý12¸ö룬´ÎÉ豸ºÃÕ¼¾Ý20λ¡£ÕâÔÚÒ»¶¨µÄʱÆÚÄÚ£¬Ö÷´ÎÉ豸ºÅÊÇÍêÈ«¿ÉÒÔÂú×ãϵͳÐèÒªµÄ¡£
ͬʱÔÚinclude/linux/kdev_t.hÎļþÖÐÎÒÃÇÄÜ·¢ÏֺܶຯÊý»òÕߺ궨ÒåµÄ²Ù×÷¶¼ÊÇÕë¶Ôdev_tµÄ¡£
¾ßÌå¿ÉÒÔ¿´µ½ÎÒÃǾ­³£Óõ½µÄMAJOR(dev)¡¢MINOR(dev)¡¢MKDEV(ma,mi)¡£
ÏÂÃæÎÒÃǾ;ßÌå·ÖÎöÏÂÕâÈý¸öÎÒÃǾ­³£Óõ½µÄºê¶¨Ò壺
#define MINORBITS 20
        #define MINORMASK ((1U << MINORBITS) - 1)
#define MAJOR(dev) ((unsigned int) ((dev) >> MINORBITS))
´ÓÕâ¸öºê¶¨ÒåÖÐÎÒÃÇ¿ÉÒÔ¿´µ½Æä°ÑÎÞ·ûºÅµÄ32λµÄÕûÐÍ×öλ²Ù×÷ÔËË㣺ÓÒÒÆ20λ¡£
ÔÚCÓïÑÔÖÐÈç¹ûÊÇÓÒÒÆ£¬ÄÇô×ó±ß²¹0£¬ÕâÑùÔÚÕâ32λµÄÕûÐÍÖÐͨ¹ýÕâ¸ö²Ù×÷¾ÍÖ»±£ÁôÁËÔ­ÏȵÚ19λµ½31λµÄÓÐЧֵ£¬¶øÕâÒ²ÕýÊÇÎÒÃÇËùÐèÒªµÄ¡£
ÏÂÃæÎÒÃÇ¿´ÏÂMINORÕâ¸öºê¶¨Ò壺
#define MINOR(dev) ((unsigned int) ((dev) & MINORMASK))
ÒªÃ÷°×Õâ¸öºê¶¨ÒåµÄ¾ßÌåÊǶàÉÙ£¬ÎÒÃÇÐèÒªÊ×ÏÈÃ÷°×ºê¶¨ÒåMINORMASKÊÇʲô£¿
ÎÒÃÇ´ÓÇ°ÃæµÄºê¶¨ÒåÖУ¬ÎÒÃÇ¿´µ½£º
#define MINORMASK ((1U << MINORBITS) - 1)
MINORMASK ÊÇ1UÒ²¾ÍÊÇ1×óÒÆÎ»20¸ö×Ö½Ú£¬¶þ½øÖƵϰ¾ÍÊÇ10000000000000000000£¬Ò²¾ÍÊÇ1ºóÃæ´ø20¸ö0¡£
È»ºóÔÚ¼õ1ÄØ£¬¾Í³ÉÁ˶þ½øÖÆ11111111111111111111£¬Ò²¾ÍÊÇ20¸ö1£¬Ê®Áù½øÖƵϰÊÇ0xFFFFF¡£
ºÃÏÖÔÚÎÒÃÇÖªµÀMINORMASKÊÇ20¸ö1£¬Ò²¾ÍÊÇÊ®Áù½øÖÆ0xFFFFF£¬ÄÇôÎÒÃÇÔÚÓë


Ïà¹ØÎĵµ£º

LinuxÏÂglftpd´î½¨FTP·þÎñÆ÷


 Ò»¡¢Ç°ÑÔ
    Linux ÉÏÓкò»ÉÙÈí¼þÄܹ»´î½¨ FTP£¬ÀýÈç vsftpd¡¢glftpd¡¢proftpd µÈ¡£
    vsftpd ÊÇºÍ Linux ϵͳÉÏÓû§¹ÜÀíÒ»ÑùµÄ¡£ËùÓеÄÓû§¹ÜÀí¶¼ÊÇÔÚÏÖÓÐËÞÖ÷ϵͳÉϵÄÓû§ÒÔ¼°×é¹ÜÀíÏàͬ¡£ÎļþȨÏÞÉϵĹÜÀíÒ²ÊÇºÍ Linux һģһÑù¡£ÔڴÉϱȽϿ죬¼òµ¥·½±ã¡£
   ......

Àí½âLinuxµÄÆô¶¯¹ý³Ì ºÃºÃѧϰѽ


 
    ´Ó°´ÏÂPCµçÔ´£¬µ½³öÏÖÊìϤµÄbashÌáʾ·û"$"»ò½øÈëÆ¯ÁÁµÄKDE/GNOME×ÀÃæ£¬ÕâÊÇÎÒÃÇÿÌ쿪»ú±Ø¾­µÄ¹ý³Ì¡£ÄÇô£¬ÔÚÕâ¶Ì¶Ì¼¸Ê®ÃëÄÚ£¬LinuxÊÇÔõÑùÆô¶¯µÄÄØ£¿±¾ÎĽéÉÜLinuxµÄÆô¶¯¹ý³Ì¡£
    ƽ̨£ºPC»ú, Ubuntu 5.10
»ù´¡ÖªÊ¶
BIOS (Basic I/O System£¬»ù±¾ÊäÈë/Êä³öϵͳ)
 & ......

linux ÏÂvsdftpÅäÖÃÎļþÏê½â

vsftpd.conf ÊÇvsftpdµÄÅäÖÃÎļþ£¬ÓÃÀ´¿ØÖÆvsftpdµÄ¸÷ÏÄÜ¡£Ä¬ÈÏ״̬Ï£¬ËüµÄλÖÃÊÇ/etc/vsftpd.conf»òÕßÔÚ/etc/vsftpd/vsftpd.conf¡£
¡¡¡¡È»¶ø£¬ÄãÒ²¿ÉÒÔͨ¹ýÐÞ¸ÄÅäÖÃÐÐÀ´Ö¸¶¨µ½ÆäËüĿ¼¡£ÕâÒ»µãºÜÓÐÓã¬ÒòΪҲÐíÄãÏëʹÓÃһЩ¸ß¼¶inetd¹¦ÄÜ£¬ÀýÈçxinetd£¬ÔÚÒ»¸ö¶àÐéÄâÖ÷»úµÄ»úÆ÷Éϵ÷Óò»Í¬µÄÅäÖÃÎļþ¡£
¡¡¡¡¸ñʽ
¡¡¡¡ ......

8¸ö¹¤×÷ʹÓöøÓÐȤµÄlinux½Å±¾

http://club.topsage.com/thread-1201128-1-1.html
ºÜ¶àÈ˶¼¶Ô¹ýÃüÁîÐÐÌáʾµÄÖØÒªÐÔ²»Ð¼Ò»¹Ë£¬ÉõÖÁÊÇÒ»µã¶¼²»¹ØÐÄ¡£µ«ÊÇÎÒÈ´Ò»µã¶¼²»ÕâôÈÏΪ£¬Ò»¸öºÃµÄÃüÁîÐÐÌáʾ¿ÉÒԸıäÄãʹÓÃÃüÁîµÄ·½Ê½¡£Îª´Ë£¬ÎÒÔÚinternetÉÏÕÒµ½Ò»Ð©·Ç³£ÊµÓã¬ÓÅÐ㣬²¢ÓÐȤµÄbashµÄÃüÁîÐÐÌáʾ¡£ÏÂÃæÎÒ½«ÎÒ×îϲ»¶Ê¹ÓõÄһЩÃüÁîÐÐÌáʾÂÞÁÐÈçÏ¡£
¡¡¡ ......

³£ÓõÄLinuxÃüÁî

1.²é¿´ÏµÍ³ÄÚºË
#uname -a
2.²é¿´cpuÐÅÏ¢
#cat /proc/cpuinfo
3.²é¿´ÄÚ´æÊ¹ÓÃÇé¿ö
#free -m
4.²é¿´Ó²ÅÌÊ£Óà¿Õ¼ä
#df -h
5.²é¿´Ä¿Â¼Õ¼Óÿռä
#du -hs Ŀ¼Ãû
6.²é¿´µ±Ç°ÓÐÄÄЩ½ø³Ì
#ps -A
7.²é¿´µ±Ç°½ø³ÌµÄʵʱÇé¿ö
#top
8.²é¿´½ø³Ì´ò¿ªµÄÎļþ
#lsof -p
9.²é¿´Ä³¸öÎļþ±»ÄÄЩӦÓóÌÐò¶Áд ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ