Linux²Ù×÷ϵͳÆô¶¯Á÷³ÌÓëGrubµÄÅäÖ÷½·¨
×÷Õߣºsixth
Ò»¡¢LinuxµÄÆô¶¯Á÷³Ì
1. ´ÓBIOSµ½KERNEL
BIOS×Ô¼ì£>MBR(GRUB)£>KERNEL£>KERNEL×Ô½âѹ£>Äں˳õʼ»¯£>ÄÚºËÆô¶¯
2. ÄÚºËÆô¶¯£º´´½¨1££½ø³Ì²¢Ö´ÐУ¬ÓÉËü´´½¨Èô¸ÉÄÚºËỊ̈߳¨kernel thread£©£¬È»ºó×°Èë²¢Ö´ÐгÌÐò/sbin/init£¨±ä³ÉÒ»¸öÓû§½ø³Ì£©¡£´Ëºó£¬init¸ù¾Ý/etc/inittabÅäÖÃÎļþÀ´Ö´ÐÐÏàÓ¦µÄ½Å±¾½øÐÐϵͳ³õʼ»¯£¬ÈçÉèÖüüÅÌ¡¢×ÖÌå£¬×°ÔØÄ£¿é£¬ÉèÖÃÍøÂçµÈ¡£
¶ÔÓÚRedhatÀ´Ëµ£¬Ö´ÐеÄ˳ÐòΪ£º
/etc/rc.d/rc.sysinit # ÓÉinitÖ´ÐеĵÚÒ»½Å±¾
/etc/rc.d/rc $RUNLEVEL # initÖ´ÐÐÖ¸¶¨ÔËÐм¶±ð£¨$RUNLEVELΪȱʡµÄÔËÐÐģʽ£©µÄ¸÷½Å±¾£»
/etc/rc.d/rc.local #ÔËÐÐģʽ2¡¢3¡¢5ʱ»áÔËÐеĽű¾
/sbin/mingetty£¨»ògetty£© # µÈ´ýÓû§µÇ¼
/etc/inittabÖÐÖ¸¶¨ÁËϵͳµÄÔËÐм¶±ð£¨RUNLEVEL£©£¬init¸ù¾ÝÔËÐм¶±ðÆô¶¯Ïà¹ØµÄ·þÎñ£¨Ò»Ð©ºǫ́½ø³Ì£©£¬ÊµÏÖ²»Í¬µÄ¹¦ÄÜ¡£
RUNLEVELֵΪ:0£6
0£ºhalt£¬ 1£ºµ¥Óû§£¬2£º¶àÓû§£¬3£º¶àÓû§²¢Æô¶¯NFS·þÎñ
4£º±£Áô£¬5£ºÔËÐÐxdm£¨X window£©ÒÔͼÐνçÃæ·½Ê½µÇ¼
6£ºreboot
3./etc/inittabÎļþ
/etc/inittabµÄÎļþÄÚÈÝÈçÏ£º
# É趨ϵͳ¿ª»úÔ¤ÉèµÄRUNLEVEL£º
id:3:initdefault:
# ¿ªÊ¼½øÐÐRUNLEVELµÄ·þÎñÆô¶¯Ç°£¬Ê¹ÓÃÀ´Õì²âÓë³õʼ»¯ÏµÍ³»·¾³µÄÉ趨Îļþ£º
si::sysinit:/etc/rc.d/rc.sysinit
# 7 ¸ö²»Í¬ run level µÄ£¬ÐèÒªÆô¶¯µÄ·þÎñµÄ scripts ·ÅÖ÷¾¶£º
l0:0:wait:/etc/rc.d/rc 0
l1:1:wait:/etc/rc.d/rc 1
l2:2:wait:/etc/rc.d/rc 2
l3:3:wait:/etc/rc.d/rc 3
l4:4:wait:/etc/rc.d/rc 4
l5:5:wait:/etc/rc.d/rc 5
l6:6:wait:/etc/rc.d/rc 6
# ÊÇ·ñÔÊÐí°´Ï [ctrl]+[alt]+[del] ¾ÍÖØÐ¿ª»úµÄÉ趨ÏîÄ¿£º
ca::ctrlaltdel:/sbin/shutdown -t3 -r now
# ±¾»ú¶ËÖÕ¶Ë»úÆô¶¯µÄ¸öÊý£º
1:2345:respawn:/sbin/mingetty tty1
2:2345:respawn:/sbin/mingetty tty2
3:2345:respawn:/sbin/mingetty tty3
4:2345:respawn:/sbin/mingetty tty4
5:2345:respawn:/sbin/mingetty tty5
6:2345:respawn:/sbin/mingetty tty6
# ÔÚ X Window (RUNLEVEL 5) »·¾³ÏÂµÄÆô¶¯ script É趨ÏîÄ¿£º
x:5:once:/etc/X11/prefdm -nodaemon
Õâ¸öÎļþµÄÓï·¨ÊÇÕâÑùµÄ£º
±êʶ·û£º¼¶±ð£ºinit µÄ¶¯×÷ÐÐΪ:Ö¸ÁîÏî
Ïà¹ØÎĵµ£º
Service Discovery Protocol(SDP)ÌṩһÖÖÄÜÁ¦£¬ÈÃÓ¦ÓóÌÐòÓз½·¨·¢ÏÖÄÄÖÖ·þÎñ¿ÉÓÃÒÔ¼°ÕâÖÖ·þÎñµÄÌØÐÔ¡£
·þÎñ·¢ÏÖÐÒé(SDP»òBluetooth SDP)ÔÚÀ¶ÑÀÐÒéÕ»ÖжÔÀ¶ÑÀ»·¾³ÖеÄÓ¦ÓóÌÐòÓÐÌØÊâµÄº¬Ò⣬·¢ÏÖÄĸö·þÎñÊÇ¿ÉÓõĺÍÈ·¶¨ÕâЩ¿ÉÓ÷þÎñµÄÌØÕ÷¡£SDP¶¨ÒåÁËbluetooth client·¢ÏÖ¿ÉÓÃbluetooth server·þÎñºÍËüÃǵÄÌØÕ÷µÄ·½·¨¡£ ......
linuxÖÐÓÃifconfigÎªÍø¿¨ÅäÖÃIPµØÖ·µÈ£¬ÔÚÏµÍ³ÖØÆôºó¾ÍʧЧÁË¡£ÎªÁ˱£Ö¤ÅäÖÃÓÀ¾ÃÉúЧ£¬ÐèÒª²ÉÓÃÐÞ¸ÄÅäÖÃÎļþµÄ¾²Ì¬ÅäÖ÷½·¨£¬×ܽáÈçÏ£º
1. cd /etc/sysconfig/network-scripts¡£
2. vi ifcfg-eth0(Ò²¿ÉÄÜÊÇeth1£¬eth2£¬·Ö±ð¶ÔÓ¦²»Í¬µÄÍø¿¨)
3. ÅäÖÃÄÚÈÝÈçÏ£º
DEVICE=eth0 //Íø¿¨É豸à ......
ϵͳ±ÀÀ£ÁËÒ»´Î£¬ºÜ¶àÎļþ¶¼¶ªÁË£¬ÐҺöªµÄÎļþ²»ÊǺÜÖØÒª¡£µÃÁËÕâ´Î½Ìѵ£¬ÒÔºóÒ»¶¨ÒªÇÚд²©¿Í£¬ÎÞÂÛ¶«Î÷¶àô¼¦Ã«ËâÆ¤£¬Ò»µ©ÄãÓùýÁËÈ»ºóÍü¼ÇÁËÈ»ºóijһÌìÓÖÐèÒªÓõÄʱºò£¬ÏëÆðÀ´×Ô¼ºÔø¾»á¹ý¶øÏÖÔÚºÍÐÂÊÖÎÞÒ죬ÄÇÖÖÐÄÇé±ðÌáÓжàÓôÃÆÁË¡£
Õýʽתµ½linuxÓÐÁ½¸ö¶àÔÂÁË£¬ÓÃlinuxµÄÔÒò³ýÁËÃâ·ÑÒÔÍ⣬×îÖØÒªµÄ¾ÍÊÇlinuxÖÐÓÐÌ«¶ ......
×÷Õߣº
±±ÄÏÄϱ±£¬ÕýÔÚÔö¼ÓÖÐ... ... ÐèÒªÄúµÄ²ÎÓ룻
À´×Ô£º
LinuxSir.Org
¼ò½é£º
±¾ÎÄÖ»Êǽ²Ò»½²ÎÒÃÇ×î³£ÓõÄLinuxÓëWindows¹²ÏíÎļþ£¬Ö÷ÒªÊÇΪÐÂÊÖָһָ·¡£ÈçºÎ½¨Á¢×î¼òµ¥µÄSamba·þÎñÆ÷£¬²¢½²ÊöÓöµ½ÎÊÌâÓ¦¸Ã´ÓºÎ´¦Ñ°ÕÒ½â¾ö·½°¸£»ÕýÔÚ¸üÐÂÖ®ÖУ¬Ï£ÍûÄúµÄ²Î¼Ó ... ... лл£»
Ŀ¼
0.1 ²é¿´Îļþ ......
ת×Ôhttp://blog.163.com/ericxia_gnikam/blog/static/969208792008102545614453/
ÔÚLinux kernelµÄÔ´´úÂëÖУ¬¾³£Äܼûµ½if(likely(x))»òif(unlikely(x))Ö®ÀàµÄÓ÷¨£¬ÆäÈ·Çк¬ÒåÐèҪ˵Ã÷һϣ¬ÒÔ±ã¸üºÃµÄÀí½âkernelµÄÔ´´úÂë¡£
likelyÓëunlikelyÕâÁ½¸öºêÔÚlinux/compiler.hÖе͍ÒåÈçÏ£º
#define likely ......