linux ϲ鿴¹²ÏíÄÚ´æµÄʹÓÃÒÔ¼°É¾³ý¹²ÏíÄÚ´æ
¼òµ¥½âÊÍÒ»ÏÂipcsÃüÁîºÍipcrmÃüÁî¡£
È¡µÃipcÐÅÏ¢£º
ipcs [-m|-q|-s]
-m Êä³öÓйع²ÏíÄÚ´æ(shared memory)µÄÐÅÏ¢
-q Êä³öÓйØÐÅÏ¢¶ÓÁÐ(message queue)µÄÐÅÏ¢
-s Êä³öÓйؓÕÚ¶ÏÆ÷”(semaphore)µÄÐÅÏ¢
%ipcs -m
ɾ³ýipc
ipcrm -m|-q|-s shm_id
%ipcrm -m 105
ÀýÈ磬ÎÒÃÇÔÚÒÔ0x12345678ΪKEY´´½¨ÁËÒ»¸ö¹²ÏíÄڴ棬¿ÉÒÔÖ±½ÓʹÓÃipcrm -M
0x12345678À´É¾³ý¹²ÏíÄÚ´æÇøÓò¡£
Ïà¹ØÎĵµ£º
I2CÊÇPhillips¿ª·¢µÄ2ÏߵĴ®ÐÐ×ÜÏßÐÒ顣ͨ³£Ó¦ÓÃÔÚǶÈëʽϵͳÖÐÈò»Í¬µÄ×é¼þͨÐÅ£¬PCÖ÷°å¿ÉÒÔͨ¹ýI2CÀ´Ó벻ͬµÄ´«¸ÐÆ÷ͨÐÅ¡£ÕâЩ´«¸ÐÆ÷ͨ³£±¨¸æ·çÉÈËÙ¶È£¬´¦ÀíÆ÷ζȺÍÕû¸öÓ²¼þϵͳµÄÐÅÏ¢£¬Õâ¸öÐÒéÒ²¿ÉÒÔÓÃÔÚRAM chipsÉÏ£¬Ïò²Ù×÷ϵͳÌṩDIMMµÄÐÅÏ¢¡£
ÔÚ2.0ʱI2CµÄkernelÔ´Âë²»ÔÚÄÚºËÀïµÄ£¬2.4Äں˰üÀ¨ÁËÒ»µã¶ÔI2CµÄÖ§³Ö ......
×î½üÔÚ¿´Linux 2.6.21Äں˵ÄI2CÇý¶¯£¬Ò²ÔÚÍøÉϲéÁËÒ»ÏÂ×ÊÁÏ£¬ÓдíÒ²Óжԣ¬ÓÐЩÐĵ㬼ǼÏÂÀ´°É¡£ÀïÃæÈÏʶ»òÐí¶àÓв»µ±Ö®´¦£¬»¹¿ÒÇëÖ¸Õý¡£
1. I2C ÐÒé
1.1 I2C×ÜÏß¹¤×÷ÔÀí
I2C×ÜÏßÊÇÓÉÊý¾ÝÏßSDAºÍʱÖÓSCL¹¹³ÉµÄ´®ÐÐ×ÜÏߣ¬¸÷ÖÖ±»¿ØÖÆÆ÷¼þ¾ù²¢ÁªÔÚÕâÌõ×ÜÏ ......
Ê×ÏÈÏÈѧѧ±à¼Æ÷£¬vim, emacsʲôµÄ¶¼ÐС£
È»ºóѧmake fileÎļþ£¬Ö»ÒªÖªµÀÒ»µã¾ÍÐУ¬ÕâÑù¾Í¿ÉÒÔ×¼±¸±à³ÌÐòÁË¡£
È»ºó¿´¿´¡¶C³ÌÐòÉè¼ÆÓïÑÔ¡·K&R£¬ÕâÑùÄØ£¬»ù±¾ÉϾͿÉÒÔ½øÐÐÒ»°ãµÄ±à³ÌÁË£¬Ë³±ãÕÒ±¾Êý¾Ý½á¹¹µÄÊéÀ´¿´¡£
Èç¹ûÏëѧϰUNIX/LINUXµÄ±à³Ì£¬¡¶APUE¡·¾ø¶Ô¾µäµÄ½Ì²Ä£¬¼ÓÉîһϹ¦µ×£¬Ñ§Ï°¡¶UNP¡·µÄµÚ¶þ¾í¡£ÕâÑù»ù ......
ËÄ¡¢quota
1.×÷ÓÃ
quotaÃüÁîÓÃÀ´ÏÔʾ´ÅÅÌʹÓÃÇé¿öºÍÏÞÖÆÇé¿ö£¬Ê¹ÓÃȨÏÞ³¬¼¶Óû§¡£
2.¸ñʽ
quota [£g][£u][£v][£p] Óû§Ãû ×éÃû
3.²ÎÊý
£g£ºÏÔʾÓû§ËùÔÚ×éµÄ´ÅÅÌʹÓÃÏÞÖÆ¡£
£u£ºÏÔʾÓû§µÄ´ÅÅÌʹÓÃÏÞÖÆ¡£
£v£ºÏÔʾûÓзÖÅä¿Õ¼äµÄÎļþϵͳµÄ·ÖÅäÇé¿ö¡£
£p£ºÏÔʾ¼ò»¯ÐÅÏ¢¡£
4.Ó¦ÓÃʵÀý
ÔÚÆóÒµÓ¦ÓÃÖдÅÅÌÅä ......
¾Å¡¢kill
1.×÷ÓÃ
killÃüÁîÓÃÀ´ÖÐÖ¹Ò»¸ö½ø³Ì¡£
2.¸ñʽ
kill [ £s signal | £p ] [ £a ] pid ...
kill £l [ signal ]
3.²ÎÊý
£s£ºÖ¸¶¨·¢Ë͵ÄÐźš£
£p£ºÄ£Äâ·¢ËÍÐźš£
£l£ºÖ¸¶¨ÐźŵÄÃû³ÆÁÐ±í¡£
pid£ºÒªÖÐÖ¹½ø³ÌµÄIDºÅ¡£
Signal£º±íʾÐźš£
4.˵Ã÷
½ø³ÌÊÇLinuxϵͳÖÐÒ»¸ö·Ç³£ÖØÒªµÄ¸ÅÄî¡£LinuxÊÇÒ»¸ö¶à ......