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linux command


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 1. ´´½¨Ä¿Â¼
     mkdir
     NO1. ÔÚµ±Ç°Â·¾¶´´½¨Ò»¼¶Ä¿Â¼
          [root@rehat root]# mkdir test
     NO2. ÔÚµ±Ç°Â·¾¶´´½¨¶à¼¶Ä¿Â¼
          [root@rehat root]# mkdir -p mytest/test1/test1_1
     NO3. ÔÚ´´½¨Ä¿Â¼µÄͬʱ¸øÐ½¨µÄĿ¼¸³È¨ÏÞ
          [root@rehat root]# mkdir -m 777 testmod
          ÕâÑùÈκÎÈ˶ԴËĿ¼¶¼ÓÐÈκÎȨÏÞ
     2. ¸´ÖÆÎļþÓëÎļþ¼Ð
     cp
     NO1. ¸´ÖÆÖ¸¶¨Ä¿Â¼µÄÎļþµ½µ±Ç°Ä¿Â¼£¬²¢ÖØÃüÃû
          [root@rehat root]# cp ~/.bashrc bashrc_bak
     NO2. Ç¿ÖÆ¸´ÖÆÖ¸¶¨Ä¿Â¼µÄÎļþµ½µ±Ç°Ä¿Â¼£¬¶ø²»¹Üµ±Ç°Ä¿Â¼ÊÇ·ñº¬ÓиÃÎļþ
          [root@rehat root]# cp -f ~/.bashrc bashrc
     NO2. ¸´ÖÆÖ¸¶¨Ä¿Â¼µ½µ±Ç°Ä¿Â¼
          [root@rehat root]# cp -r /root/test .
          [root@rehat root]# cp -r /root/test/ .
          Á½ÕßЧ¹ûÒ»Ñù£¬ÔÚ¸´ÖÆÄ¿Â¼Ê±£¬»á½«Ô´Â·¾¶µÄ×îºóÒ»¼¶Ä¿Â¼È«²¿¸´ÖƹýÈ¥£¬°üÀ¨Ëü±¾Éí¡£
     NO3. ¸´ÖÆÖ¸¶¨Ä¿Â¼µÄÎļþµ½Ö¸¶¨Ä¿Â¼
          [root@rehat root]# cp ~/.bashrc /bak/.bashrc
     NO4. ÔÚ¸´ÖÆÊ±½«Ô´ÎļþµÄÈ«²¿ÊôÐÔÒ²¸´ÖƹýÀ´¡£Èô²»Ö¸¶¨²ÎÊý£¬ÔòÄ¿±êÎļþÓëÔ´ÎļþÊôÐÔ¿ÉÄܲ»Ò»Ö¡£
          [root@rehat root]# cp


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Linux ÐÞ¸Ä IPµØÖ· ºÍ Íø¹Ø

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vi /etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
BOOTPROTO=none
BROADCAST=192.168.1.255
IPADDR=192.168.1.33
NETMASK=255.255.255.0
NETWORK=192.168.1.0
ONBOOT=yes
USERCTL=no
P ......

linux¼ÜÉèsubversion(svn)°æ±¾¿ØÖÆ


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Linux»ùÓÚʼþÇý¶¯µÄ³ÌÐò¿ò¼Ü(×ªÔØ)

[ת]Linux 2.6 ÄÚºËEpollÓ÷¨¾ÙÀý˵Ã÷
epollÓõ½µÄËùÓк¯Êý¶¼ÊÇÔÚÍ·Îļþsys/epoll.hÖÐÉùÃ÷µÄ£¬ÏÂÃæ¼òҪ˵Ã÷ËùÓõ½µÄÊý¾Ý½á¹¹ºÍº¯Êý£º
ËùÓõ½µÄÊý¾Ý½á¹¹:
 
typedef union epoll_data {
void *ptr;
int fd;
__uint32_t u32;
__uint64_t u64; ......

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