Linuxµ¥Óû§µÇÈë
×òÌ콫LinuxϵͳӲÅÌÈûÂúÁË£¬½ñÌì¾Í½ø²½ÁËϵͳÁË£¬ÄÇÐоÍÖ±½Ó¸øÐéÄâ»úÔÙÔö¼ÓÁË¿éÓ²ÅÌ£¬ÉèÏëwindows¾ÍÊÇÕâÑùÀ´ÁË£¬ËÖªµÀ»¹ÊÇÒ»Ñù¾Í²»È¥¡£ÎÊÁËÏÂͬʲÅÖªµÀ£¬ÐèÒª°ÑÓ²Å̹ÒÉÏÈ¥²ÅÉúЧ¡£
ÄDz»²ÒÁË£¬ÎÒϵͳ¶¼½ø²»È¥Ôõô¹ÒÓ²ÅÌÄØ£¬ÖӸ磨ͬÊ£©¸æËßÎÒLinuxÓõ¥Óû§½øȥɾ³ýµã¶«Î÷¾ÍÄܽøÈ¥ÁË¡£
ÐУ¬ÄǾÍÂíÉÏÊÔߣ¬»¹Ã»³¢ÊÔ¹ýÄØ¡£
ÔÚ½øϵͳµÄʱºò£¬°´ÏòÏ·½Ïò°´Å¥
1.³öÏÖLinux grub»Ãæʱ£¬ÓÃÉÏϼüÑ¡Æô¶¯LinuxµÄÄÄÒ»Ï°´e¼ü
2.ÉÏϼüÑ¡Ôñ kernel /boot/……… È»ºó°´e¼ü
3.ÐÞ¸ÄÏÖÔÚ¼ûµ½µÄÃüÁîÐУ¬¼ÓÈësingle ½á¹ûÈçÏ£º
kernel /boot/vmlinuz-2.4.20-8 single ro root=LABEL=
4.»Ø³µ·µ»Ø£¬°´b¼üÆô¶¯£¬singleģʽÆô¶¯ºóÖ±½Ó½øÈëlinuxÃüÁîÐÐ
ÓÃÃüÁîɾ³ýдÎļþ£¬Êͷſռ䡣
×îºóÖØÆô£¬init 0£»
¹þ¹þ£¬ÏµÍ³ÓÖÄܽøÈ¥ÁË£¬¸ÐлÖӸ磡
Ïà¹ØÎĵµ£º
×ÜÀÀ
ÓÃiptables -ADC À´Ö¸¶¨Á´µÄ¹æ
Ôò
£¬-AÌí¼Ó -Dɾ³ý -C ÐÞ¸Ä
iptables - [RI] chain rule num rule-specification[option]
ÓÃiptables - RI ͨ¹ý¹æÔòµÄ˳ÐòÖ¸¶¨
iptables -D chain rule num[option]
ɾ³ýÖ¸¶¨¹æÔò
iptables -[LFZ] [chain][option]
ÓÃiptables -LFZ Á´Ãû [Ñ¡Ïî]
iptables -[NX] chain
ÓÃ -NX ......
LinuxÉ豸Çý¶¯³ÌÐòÖ®¶ÁÊé±Ê¼Ç£¨Ò»£©
——µÚÈýÕÂ×Ö·ûÉ豸Çý¶¯³ÌÐò
¡ð¡¢ËµÃ÷
±Ê¼ÇÊÊÓÃÓÚLinuxµÄ2.6.10ÒÔºóµÄÄںˡ£
±Ê¼ÇÒÔLinux Device Driver3ÌṩµÄscull³ÌÐò(scullĿ¼ÖеÄmain.cºÍscull.h) ......
linuxµÄechoÃüÁî, ÔÚshell±à³ÌÖм«Îª³£ÓÃ, ÔÚÖÕ¶ËÏ´òÓ¡±äÁ¿valueµÄʱºòÒ²Êdz£³£Óõ½µÄ, Òò´ËÓбØÒªÁ˽âÏÂechoµÄÓ÷¨
echoÃüÁîµÄ¹¦ÄÜÊÇÔÚÏÔʾÆ÷ÉÏÏÔʾһ¶ÎÎÄ×Ö£¬Ò»°ãÆðµ½Ò»¸öÌáʾµÄ×÷Óá£
¸ÃÃüÁîµÄÒ»°ã¸ñʽΪ£º echo [ -n ] ×Ö·û´®
ÆäÖÐÑ¡Ïîn±íʾÊä³öÎÄ×Öºó²»»»ÐУ»×Ö·û´®ÄܼÓÒýºÅ£¬Ò²Äܲ»¼ÓÒýºÅ¡£ÓÃechoÃüÁîÊä³ö¼ÓÒýº ......
·½·¨Ò» È¥µôPCÀ®°ÈµÄÇý¶¯Ä£¿é
#rmmod pcspkr ÒѲâÊÔ
¿ÉÒÔ½«ÃüÁîдµ½ /etc/rc.local ÕâÑùÏ´ÎϵͳÆô¶¯µÄʱºò¾Í»áÈ¥µôpcspkrÄ£¿éÁË¡£
Õû¸öÊÀ½ç¶¼Çå¾²ÁË£¡
·½·¨¶þ ÐÞ¸Ä /etc/inputrc Îĵµ
½« set bell-style none ÃüÁîÐм¤»î£¬ÖØÆôϵͳ¡£
ÍƼö·½·¨¶þ ......
Ò»¡¢Linux
²é¿´cpuÐÅÏ¢£º
[junjie2@ljj ~]$ cat /proc/cpuinfo
¶þ¡¢Freebsd
dmesg ×î¼òµ¥µÄ·½·¨
freebsd# cat /var/run/dmesg.boot |grep CPU ¿ÉÒԲ鿴 cpuÐÅÏ¢
sysctl hw.model ¿´cpuid
sysctl machdep.tsc_freq ¿´cpuƵÂÊ
# sysctl -a | egrep -i 'hw.machine|hw.model|hw.ncpu'
# dmesg | grep -i cpu ......