linux 0ºÅ½ø³Ì 1ºÅ½ø³Ì Çø±ð£¨×ª)
ϵͳÔÊÐíÒ»¸ö½ø³Ì´´½¨Ð½ø³Ì£¬Ð½ø³Ì¼´Îª×Ó½ø³Ì£¬×Ó½ø³Ì»¹¿ÉÒÔ´´½¨ÐµÄ×Ó½ø³Ì£¬Ðγɽø³ÌÊ÷½á¹¹Ä£ÐÍ¡£Õû¸ölinuxϵͳµÄËùÓнø³ÌÒ²ÊÇÒ»¸öÊ÷Ðνṹ¡£Ê÷¸ùÊÇϵͳ×Ô¶¯¹¹ÔìµÄ£¬¼´ÔÚÄÚºË̬ÏÂÖ´ÐеÄ0ºÅ½ø³Ì£¬ËüÊÇËùÓнø³ÌµÄ׿ÏÈ¡£ÓÉ0ºÅ½ø³Ì´´½¨1ºÅ½ø³Ì£¨ÄÚºË̬£©£¬1ºÅ¸ºÔðÖ´ÐÐÄں˵IJ¿·Ö³õʼ»¯¹¤×÷¼°½øÐÐϵͳÅäÖ㬲¢´´½¨Èô¸É¸öÓÃÓÚ¸ßËÙ»º´æºÍÐéÄâÖ÷´æ¹ÜÀíµÄÄÚºËÏ̡߳£Ëæºó£¬1ºÅ½ø³Ìµ÷ÓÃexecve£¨£©ÔËÐпÉÖ´ÐгÌÐòinit£¬²¢Ñݱä³ÉÓû§Ì¬1ºÅ½ø³Ì£¬¼´init½ø³Ì¡£Ëü°´ÕÕÅäÖÃÎļþ/etc/initabµÄÒªÇó£¬Íê³ÉϵͳÆô¶¯¹¤×÷£¬´´½¨±àºÅΪ1ºÅ¡¢2ºÅ...µÄÈô¸ÉÖÕ¶Ë×¢²á½ø³Ìgetty¡£
ÿ¸ögetty½ø³ÌÉèÖÃÆä½ø³Ì×é±êʶºÅ£¬²¢¼àÊÓÅäÖõ½ÏµÍ³Öն˵ĽӿÚÏß·¡£µ±¼ì²âµ½À´×ÔÖն˵ÄÁ¬½ÓÐźÅʱ£¬getty½ø³Ì½«Í¨¹ýº¯Êýexecve£¨£©Ö´ÐÐ×¢²á³ÌÐòlogin£¬´ËʱÓû§¾Í¿ÉÊäÈë×¢²áÃûºÍÃÜÂë½øÈëµÇ¼¹ý³Ì£¬Èç¹û³É¹¦£¬ÓÉlogin³ÌÐòÔÙͨ¹ýº¯Êýexecv£¨£©Ö´ÐÐshell£¬¸Ãshell½ø³Ì½ÓÊÕgetty½ø³ÌµÄpid£¬È¡´úÔÀ´µÄgetty½ø³Ì¡£ÔÙÓÉshellÖ±½Ó»ò¼ä½ÓµØ²úÉúÆäËû½ø³Ì¡£
ÉÏÊö¹ý³Ì¿ÉÃèÊöΪ£º0ºÅ½ø³Ì->1ºÅÄں˽ø³Ì->1ºÅÓû§½ø³Ì£¨init½ø³Ì£©->getty½ø³Ì->shell½ø³Ì
×¢Ò⣬ÉÏÊö¹ý³ÌÃèÊöÖÐÌáµ½£º1ºÅÄں˽ø³Ìµ÷ÓÃÖ´ÐÐinit²¢Ñݱä³É1ºÅÓû§Ì¬½ø³Ì£¨init½ø³Ì£©£¬ÕâÀïǰÕßÊÇinitÊǺ¯Êý£¬ºóÕßÊǽø³Ì¡£Á½ÕßÈÝÒ×»ìÏý£¬Çø±ðÈçÏ£º
1.init£¨£©º¯ÊýÔÚÄÚºË̬ÔËÐУ¬ÊÇÄں˴úÂë
2.init½ø³ÌÊÇÄÚºËÆô¶¯²¢ÔËÐеĵÚÒ»¸öÓû§½ø³Ì£¬ÔËÐÐÔÚÓû§Ì¬Ï¡£
3.Ò»ºÅÄں˽ø³Ìµ÷ÓÃexecve£¨£©´ÓÎļþ/etc/inittabÖмÓÔØ¿ÉÖ´ÐгÌÐòinit²¢Ö´ÐУ¬Õâ¸ö¹ý³Ì²¢Ã»ÓÐʹÓõ÷ÓÃdo_fork()£¬Òò´ËÁ½¸ö½ø³Ì¶¼ÊÇ1ºÅ½ø³Ì¡£
ת×Ô£ºhttp://qhwang.blogbus.com/logs/46874366.html£¬ÇÒ×öÁËÒ»¶¨ÐÞ¸Ä
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 ......
ÔÚlinuxÏÂһЩ³£ÓõĹػú/ÖØÆôÃüÁîÓÐshutdown¡¢halt¡¢reboot¡¢¼°init£¬ËüÃǶ¼
¿ÉÒÔ´ïµ½ÖØÆôϵͳµÄÄ¿µÄ£¬µ«Ã¿¸öÃüÁîµÄÄÚ²¿¹¤×÷¹ý³ÌÊDz»Í¬µÄ£¬Í¨¹ý±¾ÎĵĽéÉÜ£¬Ï£
ÍûÄã¿ÉÒÔ¸ü¼ÓÁé»îµÄÔËÓø÷ÖֹػúÃüÁî¡£
¡¡¡¡ 1.shutdown
shutdownÃüÁȫµØ½«ÏµÍ³¹Ø»ú¡£ ÓÐЩÓû§»áʹÓÃÖ±½Ó¶ÏµôµçÔ´µÄ·½ ......
ÓÉÓÚÎÒÔÚÍøÉÏÏÂÔØÁËUbuntu LinuxÀ´°²×°·¢ÏÖÊÖͷû¿Õ°×¹âÅ̼̿cd,ËùÓÐgoogleÁËÏÂÕÒµ½ÁËÈçÏÂÎÄÕ½øÐÐʵ¼ù. ===================½Ì³Ì1========================== ˵µ½°²×°²Ù×÷ϵͳ£¬´ó¶àÊýÈËÊìϤµÄÊÇ´Ó¹âÅÌÒýµ¼£¬Æäʵ´ÓºÜ¶à´æ´¢É豸¶¼¿ÉÒÔʵÏÖϵͳÒýµ¼µÄ¡£ÓÉÓÚLinux²Ù×÷ϵͳµÄ·¢²¼ºÜ¶à£¬¶ø¶àÊýÈ˶¼ÊÇͨ¹ýÍøÂçÏÂÔØ²Ù×÷ϵͳµ ......
Linux¿ª·¢»·¾³±Ø±¸Ê®´ó¿ª·¢¹¤¾ß
¡¡¡¡¡¾IT168 ר¸å¡¿LinuxÊÇÒ»¸öÓÅÐãµÄ¿ª·¢»·¾³£¬µ«ÊÇÈç¹ûûÓкõĿª·¢¹¤¾ß×÷ΪÎäÆ÷£¬Õâ¸ö»·¾³¸øÄã´øÀ´µÄºÃ´¦¾Í»á´ó´òÕÛ ¿Û¡£ÐÒÔ˵ÄÊÇ£¬ÓкܶàºÃÓõÄLinuxºÍ¿ªÔ´¿ª·¢¹¤¾ß¹©ÄãÑ¡Ôñ£¬Èç¹ûÄãÊÇÒ»¸öÐÂÊÖ£¬Äã¿ÉÄܲ»ÖªµÀÓÐÄÄЩ¹¤¾ß¿ÉÓᣱ¾ÎĽ«½éÉÜÆäÖÐÊ®¸ö½Ü³öµÄ¿ªÔ´¿ª·¢¹¤¾ß£¬ ......