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

LinuxÎļþºÍĿ¼·ÃÎÊȨÏÞÉèÖà Z

µ±Ö´ÐÐ
ls -l
»ò
ls -al
ÃüÁîºóÏÔʾµÄ½á¹ûÖУ¬×îÇ°ÃæµÄµÚ
2
¡«
10
¸ö×Ö·ûÊÇÓÃÀ´±íʾȨÏÞ¡£µÚÒ»¸ö×Ö·ûÒ»°ãÓÃÀ´Çø·ÖÎļþºÍĿ¼£º
   
d
£º±íʾÊÇÒ»¸öĿ¼£¬ÊÂʵÉÏÔÚ
ext2fs
ÖУ¬Ä¿Â¼ÊÇÒ»¸öÌØÊâµÄÎļþ¡£
   
£­£º±íʾÕâÊÇÒ»¸öÆÕͨµÄÎļþ¡£
   
l:
±íʾÕâÊÇÒ»¸ö·ûºÅÁ´½ÓÎļþ£¬Êµ¼ÊÉÏËüÖ¸ÏòÁíÒ»¸öÎļþ¡£
   
b
¡¢
c
£º·Ö±ð±íÊ¾Çø¿éÉ豸ºÍÆäËûµÄÍâΧÉ豸£¬ÊÇÌØÊâÀàÐ͵ÄÎļþ¡£
   
    
s
¡¢
p
£ºÕâЩÎļþ¹ØÏµµ½ÏµÍ³µÄÊý¾Ý½á¹¹ºÍ¹ÜµÀ£¬Í¨³£ºÜÉÙ¼ûµ½¡£
µÚ
2
¡«
10
¸ö×Ö·ûµ±ÖеÄÿ
3
¸öΪһ×飬×ó±ßÈý¸ö×Ö·û±íʾËùÓÐÕßȨÏÞ£¬Öмä
3
¸ö×Ö·û±íʾÓëËùÓÐÕßͬһ×éµÄÓû§µÄȨÏÞ£¬ÓÒ±ß
3
¸ö×Ö·ûÊÇÆäËûÓû§µÄȨÏÞ¡£ÕâÈý¸öÒ»×é¹²
9
¸ö×Ö·û£¬´ú±íµÄÒâÒåÈçÏ£º
r(Read
£¬¶ÁÈ¡
)
£º¶ÔÎļþ¶øÑÔ£¬¾ßÓжÁÈ¡ÎļþÄÚÈݵÄȨÏÞ£»¶ÔĿ¼À´Ëµ£¬¾ßÓÐä¯ÀÀÄ¿
¼µÄȨÏÞ¡£
w(Write,
дÈë
)
£º¶ÔÎļþ¶øÑÔ£¬¾ßÓÐÐÂÔö¡¢ÐÞ¸ÄÎļþÄÚÈݵÄȨÏÞ£»¶ÔĿ¼À´Ëµ£¬¾ßÓÐɾ³ý¡¢Òƶ¯Ä¿Â¼ÄÚÎļþµÄȨÏÞ¡£
x(eXecute
£¬Ö´ÐÐ
)
£º¶ÔÎļþ¶øÑÔ£¬¾ßÓÐÖ´ÐÐÎļþµÄȨÏÞ£»¶ÔĿ¼ÁËÀ´Ëµ¸ÃÓû§¾ßÓнøÈëĿ¼µÄȨÏÞ¡£
   
£­£º±íʾ²»¾ßÓиÃÏîȨÏÞ¡£


Ïà¹ØÎĵµ£º

linuxÄÚºË lock free


//
ͬ²½ÎÊÌ⣺
¶Ô¹²ÏíÊý¾ÝµÄ·ÃÎÊ£¬ÐèҪͬ²½£¬»¥³â¡£
ÔÚÖжϣ¬ÇÀÕ¼£¬¶àCPU£¬¶àÏß³Ì »·¾³ÏÂÓÈÆäÖØÒª¡£
ͬ²½·ÖΪ: ×èÈûͬ²½£¬·Ç×èÈûͬ²½
×èÈûͬ²½ÓÐÐí¶àʵÏÖ·½Ê½ÁË£ºmutex, semaphore. ×èÈûͬ²½Ê¹Óò»µ±¾Í¿ÉÄÜÔì³ÉËÀËø£¬»îËø£¬ÓÅÏȼ¶·´×ª¡£
·Ç×èÈûͬ²½£º£¨ÏÖÔÚÁ÷ÐÐÈýÖÖ£©
wait free ºÜÄÑʵÏÖ£¬Ë¼ÏëÊDZ¾Ïß³ÌÓÐÏÞ²½¾Í ......

linux 0.11 ÄÚºËѧϰ buffer.c


/*
 * buffer.c ³ÌÐòÓÃÓÚ¶Ô¸ßËÙ»º³åÇø(³Ø)½øÐвÙ×÷ºÍ¹ÜÀí¡£¸ßËÙ»º³å
 * ÇøÎ»ÓÚÄں˴úÂëºÍÖ÷ÄÚ´æÇøÖ®¼ä¡£
 *
 *  |---|---|------------------|---------------------|-------------------|
 *  |   |   |    *   *    *    | &nbs ......

linux 0.11 ÄÚºËѧϰ pipe.c


/*
 * ¸ÃÎļþÖеÄÁ½¸öº¯Êýread_pipeºÍwrite_pipeÊÇÉϲ㺯Êý
 * readºÍwriteµÄµ×²ãʵÏÖ
 */
/*
 *  linux/fs/pipe.c
 *
 *  (C) 1991  Linus Torvalds
 */
#include <signal.h>
#include <linux/sched.h>
// ÄÚ´æ¹ÜÀíÍ·Îļþ¡£º¬ÓÐÒ³Ãæ´óС¶¨Òåº ......

LinuxÉèÖÃDNSºÍÖ÷»úÃû

LinuxÏÂÅäÖþ²Ì¬IPµØÖ·£¬ÉèÖÃDNSºÍÖ÷»úÃû
ÅäÖÃÎļþλÓÚ£º
/etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
ONBOOT=yes
BOOTPROTO=static
IPADDR=192.168.0.3
NETMASK=255.255.255.0
GATEWAY=192.168.0.1
ʹIPµØÖ·ÉúЧ£º
/sbin/ifdown eth0
/sbin/ifup eth0
ÅäÖÃdns½âÎö
echo "nameserver 211.98.1.28" ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ