Applied Mathematics 8 (2008)
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* ¼ø¶ÈÆâÍÆ [#c1b47873]
¤³¤ì¤«¤é¤ÎÆâÍƤòÍý²ò¤¹¤ë¤¿¤á¤Ë¡¤unix ¤ÎÆ°ºî¤Î´ðËܤˤĤ¤¤Æ...
* Unix ¤¬Æ°¤¤¤Æ¤¤¤ë¤È¤¤¤¦¤³¤È [#k2d47764]
unix ¤È¤¤¤¦ OS ¤¬Æ°¤¤¤Æ¤¤¤ë¤È¤¤¤¦¤³¤È¤Ï¡¤¥æ¡¼¥¶¤ËÂФ·¤Æ¤µ...
¤µ¤Þ¤¶¤Þ¤Ê±þÅú¤ò¡Ö¥µ¡¼¥Ó¥¹¡×¤¹¤ë¤¿¤á¤Ë¡¤Çظå¤Ç¾ï¤ËÆ°¤¤¤Æ...
´õ˾Ä̤ê¤Î¥µ¡¼¥Ó¥¹¤ò¹Ô¤ï¤»¤ë¤¿¤á¤À¤±¤Ç¤Ï¤Ê¤¯¡¤Æ°ºî¤Î¸úΨ...
º£²ó¤Ï¤½¤¦¤·¤¿¡Ö¼«Æ°Åª¤Ëµ¯Æ°¤¹¤ë¥½¥Õ¥È¥¦¥§¥¢¡×¤Ë¤Ä¤¤¤Æ³Ø¤Ö.
* ¾ï¤ËÆ°¤¤¤Æ¤¤¤ë¥½¥Õ¥È¥¦¥§¥¢ [#c173086c]
unix ¤Ë¸Â¤é¤º¡¤¤¢¤ëÄøÅ٤ε¬ÌϤΠOS ¤Ç¤Ï¤µ¤Þ¤¶¤Þ¤Ê¥µ¡¼¥Ó¥¹...
** ¤Þ¤º¤Ïº£Æ°¤¤¤Æ¤¤¤ë¥½¥Õ¥È¥¦¥§¥¢¤ò¸«¤Æ¤ß¤ë [#ldc50d53]
ps ¤È¤¤¤¦¥³¥Þ¥ó¥É¤¬¤Þ¤º¤Ï´ðËÜ.
jman ps
¤â¤·¤¯¤Ï
man ps
¤È¤·¤Æ¡¤¤Þ¤º¤Ï¤³¤Î¥³¥Þ¥ó¥É¤Ë¤Ä¤¤¤ÆÄ´¤Ù¤è¤¦. ¤Ê¤ó¤È¤Ê¤¯¤ï...
ps -axu
¤È¤·¤Æ¤ß¤è¤¦((²èÌ̤ËÆþ¤ê¤¤é¤Ê¤¤¾ì¹ç¤Ï¡¤ps -axu | less ¤Ê...
ps -axuww
¤Ê¤É¤È¤¹¤ì¤Ð¤è¤¤.
¼¡¤Ë¡¤¼ÂºÝ¤ËÆ°¤¤¤Æ¤¤¤ë³Æ¡¹¤Î¥×¥í¥»¥¹¤¬¤É¤ì¤¯¤é¤¤¤ÎÉé²Ù¤ò...
¤³¤ÎÌÜŪ¤Ë¤Ï top ¤È¤¤¤¦¥³¥Þ¥ó¥É¤¬Å¬¤·¤Æ¤¤¤ë. ¤³¤ì¤â¥Þ¥Ë¥å...
top
¤È¤·¤Æ¤ß¤è¤¦. ¥×¥í¥»¥¹¤Î¾õ¶·¤¬Æ°Åª¤Ë¤ß¤¨¡¤¤«¤Ä¡¤cpu ¤ä¥á...
¼¡¤Ë¡¤ÍÍ¡¹¤Ê¥Õ¥¡¥¤¥ë¤ò³«¤¤¤Æ¤¤¤ë¥×¥í¥»¥¹¤Î¾õ¶·¤ò¤ß¤ë¤¿¤á...
¤¿¤À¤·¡¤lsof ¤Ï¥¤¥ó¥¹¥È¡¼¥ë¤µ¤ì¤Æ¤¤¤Ê¤¤¤«¤â¤·¤ì¤Ê¤¤. ¤½¤Î...
(¥¤¥ó¥¹¥È¡¼¥ë¸å)¡¤¤Þ¤º¤Ï¥Þ¥Ë¥å¥¢¥ë¤ò¤Ò¤¤¤Æ¤«¤é¡¤
lsof | less
¤È¤·¤Æ¤ß¤è¤¦. ¤¿¤Ö¤ó¤è¤¯¤ï¤«¤é¤Ê¤¤¤À¤í¤¦¤«¤é¡¤º£ÅÙ¤Ï
lsof -i4
lsof -i4 -P
¤È¤·¤Æ¤ß¤è¤¦. ¤³¤¦¤¹¤ë¤È¥Í¥Ã¥È¥ï¡¼¥¯ port ¤Î¾õ¶·(ÂÔ¤Á¼õ¤±...
¤³¤ì¤é¤Ï¥Í¥Ã¥È¥ï¡¼¥¯¥µ¡¼¥Ó¥¹¤ò¤¹¤ëºÝ¤ËÈó¾ï¤Ë½ÅÍפʾðÊó¤Ç...
*** ¼Â½¬ [#v1cd6814]
¤â¤·¥¤¥ó¥¹¥È¡¼¥ë¤µ¤ì¤Æ¤¤¤Ê¤±¤ì¤Ð¡¤lsof ¤ò°Ê²¼¤Î¤è¤¦¤Ë¤·¤Æ...
portsnap fetch ¢« ¤³¤¦¤¤¤¦»þ¤Ï¤Þ¤º¤Ï ports ¥Ç¡¼¥¿¤ò¼è¤Ã...
portsnap update ¢« ¹¹¿·¤·¤Æ¤ª¤¯¤Î¤òÊʤˤ·¤Æ¤ª¤³¤¦. ¸Å¤¤...
portinstall lsof ¢« ¤½¤ì¤«¤é¥¤¥ó¥¹¥È¡¼¥ë.
** kernel [#s5edfdb6]
Unix OS ¤½¤Î¤â¤Î¡¤Ãæ³Ë¤Ç¤¢¤ë¥½¥Õ¥È¥¦¥§¥¢¤ÏÄ̾ï kernel ¤È...
kernel ¤ÎÌòÌܤϤ½¤Î OS ¾å¤ÇÆ°¤¯¥½¥Õ¥È¥¦¥§¥¢¤ÎÀ©¸æ¤È¡¤³Æ¥½...
¶ñÂÎŪ¤Ë¤Ï¡¤CPU ¤ä¥á¥â¥ê¤Ê¤É¤Î¥Ï¡¼¥É¥¦¥§¥¢¤Î´ðËÜŪ¤ÊÀ©¸æ...
kernel ¤ª¤è¤Ó kernel ¤ËÁȹþ¤à¥â¥¸¥å¡¼¥ë¤Ï¸½ºß¤Î FreeBSD ...
kernel ¤ÎÆ°ºî¤òÊѤ¨¤ë¤Ë¤Ï¡¤ÀßÄê¤òÊѤ¨¤ëÊýË¡¤È kernel ¼«¿È...
¾Ü¤·¤¯½ñ¤¯¤È°Ê²¼¤ÎÄ̤ê¤Ç¤¢¤ë¡¥
- µ¯Æ°»þ¤ËÀßÄê¤òÊѤ¨¤ëÊýË¡
-- ¥Ö¡¼¥È»þ¤Ë¡¤¥í¡¼¥À(loader)¤Ë¡ÖÆþ¤Ã¤Æ¡×¤½¤³¤Ç¼êÆ°¤ÇÀßÄê...
¿·¤·¤¤¥«¡¼¥Í¥ë¤òºî¤Ã¤¿¤¬¤¦¤Þ¤¯Æ°¤«¤Ê¤¤¤Ê¤É¤È¤¤¤¦»þ¤Ë¤Ï½Å...
¶ñÂÎŪ¤Ë¤Ï¡¤¥Þ¥·¥ó¤òµ¯Æ°¤·¤Æ¡¤µ¯Æ°»þ¤Î¥á¥Ë¥å¡¼
&ref(./01.png);
¤¬½Ð¤¿»þ¤Ë¥¹¥Ú¡¼¥¹¥¡¼¤ò²¡¤·¤Æ¤¤¤Ã¤¿¤óÄä¤á¤Æ¤«¤é¡¤ 6 ¥¡¼...
&ref(./02.png);
¤È¤¤¤¦¥×¥í¥ó¥×¥È¤¬¤Ç¤Æ¥í¡¼¥À¤ËÆþ¤ì¤¿¤³¤È¤¬¤ï¤«¤ë.
//
¥í¡¼¥À¤Î¾å¤Ç¤Ï ? ¤ò²¡¤»¤Ð»È¤¨¤ë¥³¥Þ¥ó¥É¤¬½Ð¤ë. ¥í¡¼¥À¤ÎÃæ...
¤Á¤Ê¤ß¤Ë¡¤¥í¡¼¥À¾å¤Ç»È¤¨¤ë¥³¥Þ¥ó¥É¤Ï¡¤(FreeBSD ¤¬ÉáÄ̤ËÆ°...
-- /boot/loader.conf ¤ò½ñ¤´¹¤¨¤Æ¤ª¤¤¤Æ¤«¤é(ºÆ)µ¯Æ°¤¹¤ë. ...
- Æ°ºîÃæ¤ËÀßÄê¤òÊѤ¨¤ëÊýË¡.
-- sysctl ¤ò»È¤¦. ¤Þ¤º¤Ï¥Þ¥Ë¥å¥¢¥ë¤ò´Êñ¤ËÆɤ⤦. ¤½¤ì¤«...
sysctl -a -h | less
¤Ê¤É¤È¤·¤Æ¤ß¤è¤¦. ÃúÇ«¤Ë¸«¤Æ¤¤¤¯¤È¡¤¤Ê¤ó¤È¤Ê¤¯¤ï¤«¤ë¹àÌÜ...
¤Á¤Ê¤ß¤Ë¡¤½ñ¤´¹¤¨¤Æ¤ß¤¿¤±¤ì¤Ð sysctl ÊÑ¿ô̾=ÀßÄêÃÍ ¤Ç½ñ...
-- ¥«¡¼¥Í¥ë¥â¥¸¥å¡¼¥ë¤Î¥í¡¼¥É,¥¢¥ó¥í¡¼¥É¤ò¹Ô¤¦. ¥³¥Þ¥ó¥É...
¤³¤ì¤é2¥³¥Þ¥ó¥É¤Î¥Þ¥Ë¥å¥¢¥ë¤ò¤Ò¤¡¤¤ª¤ª¤è¤½Íý²ò¤·¤Æ¤ª¤³¤¦.
Æüì¤Ê¥Ï¡¼¥É¥¦¥§¥¢¤ò»È¤¦ºÝ¤Ê¤É¤Ë¤Ï¤ªÀ¤Ïäˤʤë.
- ¥«¡¼¥Í¥ë¤ò¥³¥ó¥Ñ¥¤¥ë¤·¤Æºî¤Ã¤Æ¤·¤Þ¤¦(¤«¤Ê¤êºÙ¤«¤¤¥«¥¹¥¿...
ÉáÄ̤ϡ¤/usr/src/sys/i386/conf ¤Ë¤¢¤ë GENERIC ¥Õ¥¡¥¤¥ë¤ò...
¤µ¤¹¤¬¤Ë¤³¤³¤Ç½ñ¤¤¤ì¤Ê¤¤¤Î¤Ç¡¤FreeBSD ¤Î¸øŪ»ñÎÁ¤Ç¤¢¤ë ...
¤³¤Î¼êË¡¤ÇFreeBSD ¤Î¡ÖÀǽ¡×¤òÂ礤¯ÊѤ¨¤ë¤³¤È¤¬¤Ç¤¤ë¤Î...
*** ¼Â½¬ [#h4f4dc5f]
¥Þ¥·¥ó¤òºÆµ¯Æ°¤µ¤»¡¤¥í¡¼¥À(loader)¤ËÆþ¤Ã¤Æ¤ß¤è¤¦.
»î¤·¤Ë¡¤loader ¾å¤Ç lsmod ¤È¤·¤Æ¡¤¤É¤ó¤Ê¥â¥¸¥å¡¼¥ë¤¬Æɤß...
°Õ³°¤Ë¤ß¤ë¤À¤±¤Ç¤ï¤«¤ë¤â¤Î¤â¤¢¤ë¤Ï¤º¤À.
¤Þ¤¿¡¤heap ¤È¤·¤Æ¤ß¤Æ¡¤¥á¥â¥ê¤Î»ÈÍѾõ¶·¤ò¸«¤Æ¤ß¤è¤¦.
¤½¤ì¤¬½ª¤ï¤Ã¤¿¤é¡¤autoboot ¤È¤·¤Æ¡¤Ä̾ï¤Î¥Ö¡¼¥È¤ò¤µ¤»¤è¤¦.
¼¡¤Ë¡¤(°Ê¹ß¤ÏÄ̾ï¤Î FreeBSD ¾å¤Ç) sysctl ¤ÎÀßÄêɽ¤òį¤á¤Æ...
** init [#j25d1344]
unix ¤Ç¤ÏÁ´¤Æ¤Î¥×¥í¥°¥é¥à¤Ë¤Ï¡¤¿Æ¤«¤éµ¯Æ°¤µ¤ì¤ë»Ò¤È¤¤¤¦¡Ö...
¤½¤·¤Æ¡¤unix OS ¤ÎÃæ¤Ç¡Ö¥×¥í¥°¥é¥à¡×¤È¤·¤Æ°Õ¼±¤µ¤ì¤ë¥×¥í...
Ä̾ï¤Ï pid 1 ¤Ç¤¢¤ë((¤µ¤é¤Ë nest ¤·¤Æ init ¤òµ¯Æ°¤¹¤ë¤³¤È...
¤â¤¦¤Á¤ç¤Ã¤ÈºÙ¤«¤¯²òÀ⤹¤ë¤È¡¤unix ¤Ç¤Ï init ¤ò½ü¤¤¤Æ¤¢¤é...
¤Ç¤¢¤ë¤Î¤Ç¡¤Á´¤Æ¤Î¥×¥í¥»¥¹¤Î±ó¤¤¿Æ¤Ë¤¢¤¿¤ë init ¤¬»à¤Ì¤È...
init ¤Ïµ¯Æ°¸å¡¤/etc/rc, /etc/rc.subr, /etc/rc.conf ¤Ê¤É¤ò...
¤è¤ê¾Ü¤·¤¯¤Ï¡¤init ¤Î¥Þ¥Ë¥å¥¢¥ë¤ò»²¾È¤µ¤ì¤¿¤¤.
*** ¼Â½¬ [#x7427d7c]
¤Þ¤º¡¤ps -axu ¤ò»È¤Ã¤Æ¡¤init ¤¬³Î¤«¤Ë pid 1 ¤ÇÆ°¤¤¤Æ¤¤¤ë...
init ¤Î¥Þ¥Ë¥å¥¢¥ë¤òÆɤà¤È¥«¡¼¥Í¥ë¤Î¥»¥¥å¥ê¥Æ¥£¥ì¥Ù¥ë¤Ë¤Ä...
Àè¤Î sysctl ¤Î½ÐÎϤǤ³¤ì¤ËÁêÅö¤¹¤ë¤Î¤Ï¤É¤³¤«Ä´¤Ù¤è((¥Þ¥Ë...
¤½¤·¤Æ¡¤¤½¤ÎÃͤ¬º£¤É¤¦¤Ê¤Ã¤Æ¤¤¤ë¤«Ä´¤Ù¤è.
¤Þ¤¿¡¤init ¤Î¥Þ¥Ë¥å¥¢¥ë¤òÆɤà¤È¡¤kill ¤Û¤²¤Û¤² 1 ¤Ë¤Ä¤¤¤Æ...
¤½¤ì¤é¤òÍý²ò¤·¤¿¾å¤Ç¡¤
kill -INT 1
¤ò¹Ô¤Ã¤Æ¤ß¤è(¤¿¤À¤·¡¤root ¤Ç¤Ê¤¤¤È½ÐÍè¤Ê¤¤¤È»×¤¦¤è).
** Daemon [#ma990afc]
¤Ê¤ó¤é¤«¤Î¥µ¡¼¥Ó¥¹¤òÄ󶡤¹¤ë¤¿¤á¤Ë¥Ð¥Ã¥¯¥°¥é¥¦¥ó¥É¤Ç¾ï»þ...
¤¤¤º¤ìºÙ¤«¤¯¼¨¤¹¤¬¡¤¤½¤Î unix ¤Ç²¿¤¬¤Ç¤¤ë¤Î¤«¤Ï daemon ...
¤Þ¤º¤Ï¤É¤ó¤Ê daemon ¤¬º£Æ°¤¤¤Æ¤¤¤ë¤Î¤«¡¤Ì¾Á°¤À¤±¤Ç¤â¤ß¤Æ...
*** ¼Â½¬ [#pdf3306d]
ps, top, lsof ¤Ë¤Ä¤¤¤Æ¤ÎÁàºî¤ò¤·¤Æ¤ß¤Æ¡¤º£¸½ºß¤É¤Î¤è¤¦¤Ê...
* ¥µ¡¼¥Ó¥¹Í׵᤬¤¢¤Ã¤¿¤È¤¤Ëµ¯Æ°¤µ¤ì¤ë¥½¥Õ¥È¥¦¥§¥¢ [#p652...
¾ï¤Ë¥Ð¥Ã¥¯¥°¥é¥¦¥ó¥É¤Ç¥½¥Õ¥È¤òÆ°¤«¤·¤Æ¤¤¤ë¤³¤È¤Ë¤Ï¼¡¤Î¤è...
-- ¤¹¤°È¿±þ¤Ç¤¤ë(ÍøÅÀ)
-- ¥á¥â¥ê¤ä CPU ¤ò¤½¤ì¤Ê¤ê¤Ë¾ÃÈñ¤¹¤ë(·çÅÀ¡Ë
¤½¤³¤Ç¡¤¡Ö¤¿¤Þ¤ËɬÍפʻþ¤¬¤¢¤ë¤¬Æä˿×®¤Ê¥ì¥¹¥Ý¥ó¥¹¤¬¤Ê...
¤³¤¦¤·¤¿ÍÑÅӤ˻Ȥï¤ì¤ë¤Î¤¬¡Ö¥¹¡¼¥Ñ¥µ¡¼¥Ð¡×"inetd" ((ÃΤé...
inetd ¤À¤±¤òΩ¤Á¾å¤²¤Æ¤ª¤±¤Ð¡¤É¬Íפ˱þ¤¸¤Æ¸Æ¤Ð¤ì¤¿¥½¥Õ¥È...
¤¿¤À¤·¡¤inetd ¤Ï¤½¤Î¡ÖÊØÍø¤µ¡×¤æ¤¨¤Ë¥»¥¥å¥ê¥Æ¥£Åª¤Ê´Ë¤µ...
** inetd ¤ò»È¤¦¤Ë¤Ï [#t5804c2f]
inetd ¤ò»È¤¦¤Ë¤Ï¡¤
++ /etc/inetd.conf ¤Ç¸Æ¤Ð¤ì¤¿¤éΩ¤Á¾å¤¬¤ë¥½¥Õ¥È¥¦¥§¥¢¤ÎÀß...
++ inetd ¤¬¤½¤â¤½¤âΩ¤Á¾å¤¬¤Ã¤Æ¤¤¤Ê¤¤¤Ê¤é¤ÐΩ¤Á¾å¤²¤ë.
++ ³°¤«¤éÀܳ¤¬É¬Íפʥ½¥Õ¥È¤Î¾ì¹ç¤Ï¡¤Àܳµö²Ä¤ò½Ð¤·¤Æ¤ª¤¯.
¤È¤¤¤¦Ãʳ¬¤òƧ¤á¤Ð¤è¤¤.
°Ê²¼¡¤ÀâÌÀ¤·¤è¤¦.
** inetd ¤ò»È¤¦¤Ë¤Ï: /etc/inetd.conf ¤Î½ñ¤´¹¤¨ [#x0d01acf]
// ¹õËܤΠp.400- ¤ò¸«¤ë¤ÈÃúÇ«¤Ë½ñ¤¤¤Æ¤¢¤ë.
/etc/inetd.conf ¤ò¸«¤ë¤È¼ÂÎ㤬½ñ¤«¤ì¥³¥á¥ó¥È¥¢¥¦¥È¤µ¤ì¤Æ...
7¹àÌܤ¢¤ëÆâÍƤòÂ礶¤Ã¤Ñ¤Ë½Ò¤Ù¤ë¤È¡¤º¸¤«¤é
++ ¥µ¡¼¥Ó¥¹Ì¾: /etc/services ¤Ë½ñ¤«¤ì¤Æ¤¤¤ë¤â¤Î¤È°ìÃפ·...
++ ¥½¥±¥Ã¥È¥¿¥¤¥×: Ä̾ï¤Ï TCP ¤Ê¤é¤Ð stream, UDP ¤Ê¤é¤Ð d...
++ ¥×¥í¥È¥³¥ë: Ä̾ï¤Ï TCP ¤« UDP ¤À. TCP ¤Ï¤ä¤ê¼è¤ê¤ò¤¹¤ë...
++ Àܳ¤·¤Æ¤«¤é¤Î inetd ¤ÎµóÆ°: Ä̾ï¤Ï TCP ¤Ê¤é¤Ð nowait ...
++ Ω¤Á¾å¤²¤ë deamon ¤Î¼Â¹Ô¸¢¸Â: ¥»¥¥å¥ê¥Æ¥£¤ò¹Í¤¨¤ÆÆüì...
++ Ω¤Á¾å¤²¤ë deamon ¤Îpath: ¥½¥Õ¥È¤Îºß½è. internal ¤È¤¤...
++ Ω¤Á¾å¤²¤ë deamon ¤Î¥³¥Þ¥ó¥É: ¥³¥Þ¥ó¥É¥é¥¤¥ó¥ª¥×¥·¥ç¥ó...
¤È¤Ê¤Ã¤Æ¤¤¤ë.
¤Ê¤ª¡¤´û¤Ë inetd ¤¬Æ°¤¤¤Æ¤¤¤ë¾õÂÖ¤Ç /etc/inetd.conf ¤ò½ñ...
kill -HUP (inetd ¤Îpid)
¤È¤¹¤ì¤Ð inetd.conf ¤òÆɤßľ¤·¤Æ¤¯¤ì¤ë.
*** ¼Â½¬ [#l3956fab]
»î¤·¤Ë¡¤¥Í¥Ã¥È¥ï¡¼¥¯¤ÇÀܳ¤·¤Æ¡Öº£Æü¤Î̾¸À¤òʹ¤»¤Æ¤¯¤ì¤ë...
¤½¤ì¤Ë¤Ï¡¤¥µ¡¼¥Ó¥¹¤òÍ׵ᤵ¤ì¤¿¤é¡Ö̾¸À¤ò½ÐÎϤ¹¤ë¡×¥×¥í¥°...
¤½¤¦¤·¤¿¥×¥í¥°¥é¥à¤Ë¤Ï fortune ¤È¤¤¤¦¤â¤Î¤¬ÃΤé¤ì¤Æ¤¤¤ë¤Î...
»î¤·¤Ë fortune ¤òÆ°¤«¤·¤Æ¤ß¤è¤¦.
&ref(./03.png);
¤Î¤è¤¦¤Ë¡¤¥é¥ó¥À¥à¤ËÁª¤Ð¤ì¤¿³Ê¸À? ¤¬½ÐÎϤµ¤ì¤ë¤Ï¤º¤À.
¤½¤Î¸å¡¤/etc/inetd.conf ¤Ë
qotd stream tcp nowait root /usr/games/fortune fortune
(Á´Éô¤Ç 7¹àÌÜ. ¹àÌܴ֤ϥ¿¥Ö¤Ç¶èÀÚ¤ë)
¤È½ñ¤²Ã¤¨¤ì¤ÐºÇ½é¤Î½àÈ÷¤Ï½ª¤ê.
** inetd ¤ò»È¤¦¤Ë¤Ï: inetd ¤ÎΩ¤Á¾å¤² [#l4fc30eb]
µ¯Æ°»þ¤Ë¤¤¤Ä¤âÆ°¤¯¤è¤¦¤Ë¤·¤Æ¤ª¤¯¤Ë¤Ï¡¤ /etc/rc.conf ¤Ë
inetd_enable="YES"
¤È½ñ¤¤¤Æ¤ª¤±¤Ð¤è¤¤.
//¼êÆ°¤ÇΩ¤Á¾å¤²¤ë¤Ë¤Ï¡¤root ¤Ç
// /etc/rc.d/inetd start
//¤È¤¹¤ì¤Ð¤è¤¤.
*** ¼Â½¬ [#a18246b1]
¾å¤ÎÄ̤ê¤Ë /etc/rc.conf ¤ËÄɵ¤·¤ÆºÆµ¯Æ°¤·¡¤inetd ¤¬Æ°¤¯...
³Î¤«¤Ë inetd ¤¬Æ°¤¤¤Æ¤¤¤ë¤«¡¤
lsof -i4 -P
¤È¤·¤Æ¡¤¾å¤ÇÀßÄꤷ¤¿¤È¤ª¤ê port 17 ¤Ç inetd ¤¬Ê¹¼ª¤òΩ¤Æ...
** inetd ¤ò»È¤¦¤Ë¤Ï: ³°¤«¤é¤ÎÀܳµö²Ä [#pec750f8]
¥»¥¥å¥ê¥Æ¥£Âкö¤È¤·¤Æ¡¤TCP wrappers ¤Ë¤è¤ë¡ÖÀܳµö²Ä¡×À©...
inetd ¤Ï¥Ç¥Õ¥©¥ë¥È¤Ç¤Ï¤³¤ÎÀܳµö²ÄÀ©ÅÙ¤òÍøÍѤ¹¤ë((ÍøÍѤ·...
¶ñÂÎŪ¤Ë¤Ï¡¤¤³¤Îµö²Ä¤¬¤É¤¦¤Ê¤Ã¤Æ¤¤¤ë¤«¤Ï /etc/hosts.allow...
µ½Ò¤Ï¸«¤ì¤Ðʬ¤«¤ë¤¬¡¤
¥×¥í¥°¥é¥à̾ : Àܳ¤·¤Æ¤¯¤ë¥Þ¥·¥ó̾ : µö²Ä/ÉÔµö²Ä
¤È¤¤¤¦¤è¤¦¤Ë¤Ê¤Ã¤Æ¤ª¤ê¡¤¾å¤Î¹Ô¤«¤é¡Ö³ºÅö¤¹¤ë¤«¤É¤¦¤«¡×¤ò...
¤½¤·¤Æ¡¤¡ÖºÇ½é¤Ë³ºÅö¤·¤¿ÀßÄê¡×¤¬Í¸ú¤Ë¤Ê¤ë»ÅÁȤߤÀ((¤è¤ê...
¤¿¤Ö¤ó¡¤³§¤Î½é´üÀßÄê¤Ç¤ÏºÇ½é¤ÎÊý¤Ë
ALL : ALL : allow
¤È½ñ¤¤¤Æ¤¢¤ë¤À¤í¤¦¤«¤é¡¤¤Þ¤º¤Ï¤¤¤¸¤é¤Ê¤¤¤Ç¤ª¤³¤¦.
¤³¤Î¾ì¹ç¡¤²¿¤Ç¤â̵À©¸Â¤ÇÀܳ¤µ¤ì¤ë¤³¤È¤Ë¤Ê¤ë¤Î¤Ç¡¤·×»»µ¡...
*** ¼Â½¬ [#q64dd1f6]
telnet localhost 17
¤È¼«Ê¬¤Î¥Þ¥·¥ó¤ËÀܳ¤·¤Æ¤ß¤Æ¡¤º£Æü¤Î̾¸À¤¬½ÐÎϤµ¤ì¤ë¤«¸«¤è.
¼¡¤Ë¡¤¾¯¤Ê¤¯¤È¤â¼«Ê¬¤Ç¤Ê¤¤Â¾Æó¿Í¤Î¥Þ¥·¥ó¤ËÂФ·¤ÆƱÍͤË
telnet (Áê¼ê¥Þ¥·¥ó̾) 17
¤È¤·¤Æ
&ref(./04.png);
¤Î¤è¤¦¤Ë¤¤Á¤ó¤È̾¸À¤¬½ÐÎϤµ¤ì¤ë¤«¸«¤è.
¼¡¤Ë¡¤/etc/hosts.allow ¤Î ALL : ALL : allow ¤è¤ê¤âÁ°¤Ë
ALL : localhost : allow
fortune : ALL : deny
¤È¤¤¤¦Æó¹Ô¤ò½ñ¤¹þ¤ó¤Ç¤«¤é((fortune ¤Ç¤Ï¤Ê¤¯¤Æ qotd ¤È½ñ...
¤½¤ì¤Ë¤Ï
// /etc/rc.d/inetd stop; /etc/rc.d/inetd start
/etc/rc.d/inetd restart
¤È¤¹¤ì¤Ð¤è¤¤.
¤½¤ì¤«¤é¡¤¼«Ê¬¤Î¥Þ¥·¥ó¤ËÀܳ¤·¤Æ¤ß¤Æ̾¸À¤¬½ÐÎϤµ¤ì¤ë¤³¤È...
* Äê´üŪ¤Ëµ¯Æ°¤µ¤ì¤ë¥½¥Õ¥È¥¦¥§¥¢ [#h393fd3f]
¾å¤Ë½Ò¤Ù¤¿¡Ö¤¤¤Ä¤âÆ°¤¤¤Æ¤¤¤ë¡×¡Ö¸Æ¤Ð¤ì¤¿¤éÆ°¤¯¤è¤¦¤ËÂÔµ¡...
¥·¥¹¥Æ¥à¤ÎÄ´ºº¤ä update ¤Ê¤É¡¤Äê´üŪ¤Ë¼Â¹Ô¤·¤¿Êý¤¬Îɤ¤¤â...
¶ñÂÎŪ¤Ê»ÅÁȤߤȤ·¤Æ¤Ï inetd ¤ËÎɤ¯»÷¤Æ¤ª¤ê¡¤Äê´üŪ¤Ë¤½¤ì...
** cron [#de5e4575]
µ¯Æ°¸å¤Ï cron ¤Ï°ìʬËè¤ËÌܳФᡤ¤½¤ÎÅÙ¤ËÀßÄê¥Õ¥¡¥¤¥ë¤ò¥Á...
¤è¤Ã¤Æ¡¤ÀßÄê¥Õ¥¡¥¤¥ë¤ò½ñ¤´¹¤¨¤¿¸å¤Ë¤½¤Î·ë²Ì¤òÈ¿±Ç¤µ¤»¤ë...
cron ¤Ëºî¶È¤ò¤µ¤»¤ë¤¿¤á¤ÎÀßÄê¥Õ¥¡¥¤¥ë¤Ï°ìÈÌ¤Ë crontab ¤È...
++ /var/cron/tabs/¥æ¡¼¥¶Ì¾ ¡Ä ľÀÜ¥¨¥Ç¥£¥¿¤Ç¤¤¤¸¤é¤º¤Ë¡¤"c...
¤³¤Î¥³¥Þ¥ó¥É "crontab" ((º®Æ±¤·¤ä¤¹¤¤¤¬¡¤crontab ¤È¤¤¤¦¥³...
¤Þ¤¿¡¤¥Õ¥¡¥¤¥ë·Á¼°¤Ë¤Ä¤¤¤Æ¤Ï((/etc/crontab ¤¬Îɤ¤¥µ¥ó¥×¥ë...
¤¿¤À¤·¡¤¤³¤ÎÀßÄê¥Õ¥¡¥¤¥ë¤Ë½ñ¤¤¤¿ÆâÍƤ¬¼Â¹Ô¤µ¤ì¤ë¤«¤É¤¦¤«...
¤ª¤ª¤¶¤Ã¤Ñ¤Ë¤Ï¡¤/var/cron/allow ¥Õ¥¡¥¤¥ë¤Ë¤½¤Î¥æ¡¼¥¶Ì¾¤¬...
++ /etc/crontab ¡Ä ¥·¥¹¥Æ¥àÍÑ. ľÀÜ¥¨¥Ç¥£¥¿¤ÇÊÔ½¸¤¹¤ë.
*** ¼Â½¬ [#v92a2c90]
cron ¤ò»È¤Ã¤Æ¤ß¤è¤¦.
¤Þ¤º¡¤Ä̾ï¥æ¡¼¥¶¤Ç¤â cron ¤¬»È¤¨¤ë¤è¤¦¤Ë¡¤/var/cron/allow...
¶ñÂÎŪ¤Ë¤Ï¡¤¥æ¡¼¥¶Ì¾¤Î¤ß¤ò½ñ¤¤¤¿¹Ô¤¬ /var/cron/allow ¤Ë¤¢...
¤½¤¦¤·¤¿¤éÄ̾ï¥æ¡¼¥¶¤Ç cron ¤ò»È¤Ã¤Æ¤ß¤è¤¦.
crontab -e
¤È¤·¤Æ¡¤Å¬Åö¤ÊÆâÍƤòÅÐÏ¿¤·¤Æ¤ß¤ë¤È¤¤¤¦¤³¤È¤À. Î㤨¤Ð¡¤
*/1 * * * * tail /var/log/messages >> ŬÅö¤Ê¥Õ¥¡¥¤¥ë̾
(Á´Éô¤Ç6¹àÌÜ. ¹àÌܴ֤ϥ¿¥Ö¤Ç¶èÀÚ¤ë. ºÇ¸å¤Î¹àÌÜ "tail ... ...
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crontab -l
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¤Ç¡¤¼ÂºÝ¤ËÆ°¤¤¤Æ¤¤¤ë¤«¤É¤¦¤«¤Ï¡¤(root¤Ç) /var/log/cron ¤ò...
¤¦¤Þ¤¯¤¤¤«¤Ê¤¤¾ì¹ç¤Ï¡¤¥í¥°¤ò¤ß¤ÆÅÐÏ¿¤ËÌäÂ꤬¤Ê¤¤¤«¤è¤¯¤ß...
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(¤¦¤Þ¤¯¤¤¤Ã¤¿¤¢¤È¤ÏºÆ¤Ó crontab -e ¤Ê¤É¤ò»È¤Ã¤ÆÅÐÏ¿¤ò³°¤·...
** periodic [#mf8f3a3d]
Äê´üŪ¤Ë¹Ô¤ï¤ì¤ë¥·¥¹¥Æ¥àºî¶È¤Î¤¦¤ÁÆäËŵ·¿Åª¤Ê¤â¤Î¤Ï /etc...
¤³¤Î periodic ¥³¥Þ¥ó¥É¤Ï cron ¤Ç¤è¤Ð¤ì¤ë¤è¤¦¤Ë¤Ê¤Ã¤Æ¤¤¤ë(...
periodic ¥³¥Þ¥ó¥É¤ÎÀßÄê¤Ï /etc/periodic.conf ¤Ç¤Ê¤µ¤ì¤ë(...
¤½¤Î¥Ç¥Õ¥©¥ë¥ÈÃÍ¤Ï /etc/defaults/periodic.conf ¤Ë½ñ¤«¤ì¤Æ...
** newsyslog [#g64e6727]
newsyslog ¤â cron ¤«¤é¸Æ¤Ó½Ð¤µ¤ì¤ë¤³¤È¤òÁÛÄꤷ¤Æ¤¤¤ë¥½¥Õ...
¶ñÂÎŪ¤Ë¤Ï¡¤¸½ºß¤Î¥í¥°¥Õ¥¡¥¤¥ë¤ò̾Á°¤òÊѤ¨¤ÆÊݸ¤·¤Æ¡¤¿·...
ÀßÄê¤Ï /etc/newsyslog.conf ¤Ç¹Ô¤ï¤ì¤ë.
¤³¤ÎÀßÄê¤òŬÀڤ˹ԤʤäƤª¤«¤Ê¤¤¤È¡¤¥í¥°¥Õ¥¡¥¤¥ë¤¬Â礤¯...
*** ¼Â½¬ [#waeedc41]
/etc/newsyslog.conf ¤òÆɤó¤Ç¡¤º£¤Î»þÅÀ¤Ç¤É¤Î¤è¤¦¤Ê¥í¥°¥Õ...
* ¥ì¥Ý¡¼¥È [#i0fd4f17]
ËÜÆü¹Ô¤Ã¤¿ºî¶È¤Ë¤Ä¤¤¤Æ furihata ¤¢¤Ã¤È cmc.osaka-u.ac.jp ...
¤â¤Á¤í¤ó³Æ¼«¤Î
+ ½ê°(³ØÉô¡¤³Ø²Ê)
+ ³ØÀÒÈÖ¹æ
+ ³Øǯ
+ »á̾
+ Æü»þ
+ ´Î¿´¤Î¥ì¥Ý¡¼¥ÈÆâÍÆ(ÆÀ¤¿Ãθ«¡¤ºî¶È¤Ë¤Ä¤¤¤Æµ¤¤Å¤¤¤¿¤³¤ÈÅù)
¤ò½ñ¤¯¤Î¤ò˺¤ì¤Ê¤¤¤è¤¦¤Ë.
* ¤ª¤Þ¤± [#zfed5918]
ÀλȤï¤ì¤Æ¤¤¤¿ ʸ»úterminal(üËö) ¤È¤Ï¡¤°Ê²¼¤Î¤è¤¦¤Ê¤â¤Î...
&ref(./terminal-01.jpg,50%);
¸«¤¿Ìܤϡ¤¥â¥Ë¥¿¤È¥¡¼¥Ü¡¼¥É¤Ë¤·¤«¸«¤¨¤Ê¤¤.
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ÇØÌ̤˥ͥåȥ¥¯¤Ø¤ÎÀܳ¥³¥Í¥¯¥¿¤¬¤¢¤ë. ±¦Â¦¤ÎÇϼ¯¤Ç¤«...
¤¿¤À¤·¡¤¤³¤Î¾ì¹ç¤Î¥Í¥Ã¥È¥ï¡¼¥¯¤È¤Ï¤»¤¤¤¼¤¤ 9600bps (¤·¤ç...
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ÅöÁ³? ²èÌ̤ϥâ¥Î¥¯¥í¤À. ¿§¤Ï¿¤¯¤¬(ÌܤËÍ¥¤·¤¤¤È¤µ¤ì¤ë)¥°...
&ref(./terminal-03.jpg,50%);
Îɤ¯¤ß¤ë¤È "VT100¥â¡¼¥É" ¤È¤¤¤¦Ê¸»ú¤¬¸«¤¨¤ë¤À¤í¤¦¡¥
¤³¤ì¤Ï¡¤Ê¸»úüËö¤Î¥Ç¥Õ¥¡¥¯¥È¥¹¥¿¥ó¥À¡¼¥É¤Ç¤¢¤ë DEC ¼Ò¤Î V...
º£¤Ç¤â¤³¤Î vt100 ¥â¡¼¥É¤Ï»È¤ï¤ì¤Æ¤¤¤Æ¡¤
grep vt100 /etc/termcap
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#contents
* ¼ø¶ÈÆâÍÆ [#c1b47873]
¤³¤ì¤«¤é¤ÎÆâÍƤòÍý²ò¤¹¤ë¤¿¤á¤Ë¡¤unix ¤ÎÆ°ºî¤Î´ðËܤˤĤ¤¤Æ...
* Unix ¤¬Æ°¤¤¤Æ¤¤¤ë¤È¤¤¤¦¤³¤È [#k2d47764]
unix ¤È¤¤¤¦ OS ¤¬Æ°¤¤¤Æ¤¤¤ë¤È¤¤¤¦¤³¤È¤Ï¡¤¥æ¡¼¥¶¤ËÂФ·¤Æ¤µ...
¤µ¤Þ¤¶¤Þ¤Ê±þÅú¤ò¡Ö¥µ¡¼¥Ó¥¹¡×¤¹¤ë¤¿¤á¤Ë¡¤Çظå¤Ç¾ï¤ËÆ°¤¤¤Æ...
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* ¾ï¤ËÆ°¤¤¤Æ¤¤¤ë¥½¥Õ¥È¥¦¥§¥¢ [#c173086c]
unix ¤Ë¸Â¤é¤º¡¤¤¢¤ëÄøÅ٤ε¬ÌϤΠOS ¤Ç¤Ï¤µ¤Þ¤¶¤Þ¤Ê¥µ¡¼¥Ó¥¹...
** ¤Þ¤º¤Ïº£Æ°¤¤¤Æ¤¤¤ë¥½¥Õ¥È¥¦¥§¥¢¤ò¸«¤Æ¤ß¤ë [#ldc50d53]
ps ¤È¤¤¤¦¥³¥Þ¥ó¥É¤¬¤Þ¤º¤Ï´ðËÜ.
jman ps
¤â¤·¤¯¤Ï
man ps
¤È¤·¤Æ¡¤¤Þ¤º¤Ï¤³¤Î¥³¥Þ¥ó¥É¤Ë¤Ä¤¤¤ÆÄ´¤Ù¤è¤¦. ¤Ê¤ó¤È¤Ê¤¯¤ï...
ps -axu
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ps -axuww
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¼¡¤Ë¡¤¼ÂºÝ¤ËÆ°¤¤¤Æ¤¤¤ë³Æ¡¹¤Î¥×¥í¥»¥¹¤¬¤É¤ì¤¯¤é¤¤¤ÎÉé²Ù¤ò...
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top
¤È¤·¤Æ¤ß¤è¤¦. ¥×¥í¥»¥¹¤Î¾õ¶·¤¬Æ°Åª¤Ë¤ß¤¨¡¤¤«¤Ä¡¤cpu ¤ä¥á...
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(¥¤¥ó¥¹¥È¡¼¥ë¸å)¡¤¤Þ¤º¤Ï¥Þ¥Ë¥å¥¢¥ë¤ò¤Ò¤¤¤Æ¤«¤é¡¤
lsof | less
¤È¤·¤Æ¤ß¤è¤¦. ¤¿¤Ö¤ó¤è¤¯¤ï¤«¤é¤Ê¤¤¤À¤í¤¦¤«¤é¡¤º£ÅÙ¤Ï
lsof -i4
lsof -i4 -P
¤È¤·¤Æ¤ß¤è¤¦. ¤³¤¦¤¹¤ë¤È¥Í¥Ã¥È¥ï¡¼¥¯ port ¤Î¾õ¶·(ÂÔ¤Á¼õ¤±...
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*** ¼Â½¬ [#v1cd6814]
¤â¤·¥¤¥ó¥¹¥È¡¼¥ë¤µ¤ì¤Æ¤¤¤Ê¤±¤ì¤Ð¡¤lsof ¤ò°Ê²¼¤Î¤è¤¦¤Ë¤·¤Æ...
portsnap fetch ¢« ¤³¤¦¤¤¤¦»þ¤Ï¤Þ¤º¤Ï ports ¥Ç¡¼¥¿¤ò¼è¤Ã...
portsnap update ¢« ¹¹¿·¤·¤Æ¤ª¤¯¤Î¤òÊʤˤ·¤Æ¤ª¤³¤¦. ¸Å¤¤...
portinstall lsof ¢« ¤½¤ì¤«¤é¥¤¥ó¥¹¥È¡¼¥ë.
** kernel [#s5edfdb6]
Unix OS ¤½¤Î¤â¤Î¡¤Ãæ³Ë¤Ç¤¢¤ë¥½¥Õ¥È¥¦¥§¥¢¤ÏÄ̾ï kernel ¤È...
kernel ¤ÎÌòÌܤϤ½¤Î OS ¾å¤ÇÆ°¤¯¥½¥Õ¥È¥¦¥§¥¢¤ÎÀ©¸æ¤È¡¤³Æ¥½...
¶ñÂÎŪ¤Ë¤Ï¡¤CPU ¤ä¥á¥â¥ê¤Ê¤É¤Î¥Ï¡¼¥É¥¦¥§¥¢¤Î´ðËÜŪ¤ÊÀ©¸æ...
kernel ¤ª¤è¤Ó kernel ¤ËÁȹþ¤à¥â¥¸¥å¡¼¥ë¤Ï¸½ºß¤Î FreeBSD ...
kernel ¤ÎÆ°ºî¤òÊѤ¨¤ë¤Ë¤Ï¡¤ÀßÄê¤òÊѤ¨¤ëÊýË¡¤È kernel ¼«¿È...
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-- ¥Ö¡¼¥È»þ¤Ë¡¤¥í¡¼¥À(loader)¤Ë¡ÖÆþ¤Ã¤Æ¡×¤½¤³¤Ç¼êÆ°¤ÇÀßÄê...
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//
¥í¡¼¥À¤Î¾å¤Ç¤Ï ? ¤ò²¡¤»¤Ð»È¤¨¤ë¥³¥Þ¥ó¥É¤¬½Ð¤ë. ¥í¡¼¥À¤ÎÃæ...
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-- /boot/loader.conf ¤ò½ñ¤´¹¤¨¤Æ¤ª¤¤¤Æ¤«¤é(ºÆ)µ¯Æ°¤¹¤ë. ...
- Æ°ºîÃæ¤ËÀßÄê¤òÊѤ¨¤ëÊýË¡.
-- sysctl ¤ò»È¤¦. ¤Þ¤º¤Ï¥Þ¥Ë¥å¥¢¥ë¤ò´Êñ¤ËÆɤ⤦. ¤½¤ì¤«...
sysctl -a -h | less
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-- ¥«¡¼¥Í¥ë¥â¥¸¥å¡¼¥ë¤Î¥í¡¼¥É,¥¢¥ó¥í¡¼¥É¤ò¹Ô¤¦. ¥³¥Þ¥ó¥É...
¤³¤ì¤é2¥³¥Þ¥ó¥É¤Î¥Þ¥Ë¥å¥¢¥ë¤ò¤Ò¤¡¤¤ª¤ª¤è¤½Íý²ò¤·¤Æ¤ª¤³¤¦.
Æüì¤Ê¥Ï¡¼¥É¥¦¥§¥¢¤ò»È¤¦ºÝ¤Ê¤É¤Ë¤Ï¤ªÀ¤Ïäˤʤë.
- ¥«¡¼¥Í¥ë¤ò¥³¥ó¥Ñ¥¤¥ë¤·¤Æºî¤Ã¤Æ¤·¤Þ¤¦(¤«¤Ê¤êºÙ¤«¤¤¥«¥¹¥¿...
ÉáÄ̤ϡ¤/usr/src/sys/i386/conf ¤Ë¤¢¤ë GENERIC ¥Õ¥¡¥¤¥ë¤ò...
¤µ¤¹¤¬¤Ë¤³¤³¤Ç½ñ¤¤¤ì¤Ê¤¤¤Î¤Ç¡¤FreeBSD ¤Î¸øŪ»ñÎÁ¤Ç¤¢¤ë ...
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*** ¼Â½¬ [#h4f4dc5f]
¥Þ¥·¥ó¤òºÆµ¯Æ°¤µ¤»¡¤¥í¡¼¥À(loader)¤ËÆþ¤Ã¤Æ¤ß¤è¤¦.
»î¤·¤Ë¡¤loader ¾å¤Ç lsmod ¤È¤·¤Æ¡¤¤É¤ó¤Ê¥â¥¸¥å¡¼¥ë¤¬Æɤß...
°Õ³°¤Ë¤ß¤ë¤À¤±¤Ç¤ï¤«¤ë¤â¤Î¤â¤¢¤ë¤Ï¤º¤À.
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¤½¤ì¤¬½ª¤ï¤Ã¤¿¤é¡¤autoboot ¤È¤·¤Æ¡¤Ä̾ï¤Î¥Ö¡¼¥È¤ò¤µ¤»¤è¤¦.
¼¡¤Ë¡¤(°Ê¹ß¤ÏÄ̾ï¤Î FreeBSD ¾å¤Ç) sysctl ¤ÎÀßÄêɽ¤òį¤á¤Æ...
** init [#j25d1344]
unix ¤Ç¤ÏÁ´¤Æ¤Î¥×¥í¥°¥é¥à¤Ë¤Ï¡¤¿Æ¤«¤éµ¯Æ°¤µ¤ì¤ë»Ò¤È¤¤¤¦¡Ö...
¤½¤·¤Æ¡¤unix OS ¤ÎÃæ¤Ç¡Ö¥×¥í¥°¥é¥à¡×¤È¤·¤Æ°Õ¼±¤µ¤ì¤ë¥×¥í...
Ä̾ï¤Ï pid 1 ¤Ç¤¢¤ë((¤µ¤é¤Ë nest ¤·¤Æ init ¤òµ¯Æ°¤¹¤ë¤³¤È...
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¤Ç¤¢¤ë¤Î¤Ç¡¤Á´¤Æ¤Î¥×¥í¥»¥¹¤Î±ó¤¤¿Æ¤Ë¤¢¤¿¤ë init ¤¬»à¤Ì¤È...
init ¤Ïµ¯Æ°¸å¡¤/etc/rc, /etc/rc.subr, /etc/rc.conf ¤Ê¤É¤ò...
¤è¤ê¾Ü¤·¤¯¤Ï¡¤init ¤Î¥Þ¥Ë¥å¥¢¥ë¤ò»²¾È¤µ¤ì¤¿¤¤.
*** ¼Â½¬ [#x7427d7c]
¤Þ¤º¡¤ps -axu ¤ò»È¤Ã¤Æ¡¤init ¤¬³Î¤«¤Ë pid 1 ¤ÇÆ°¤¤¤Æ¤¤¤ë...
init ¤Î¥Þ¥Ë¥å¥¢¥ë¤òÆɤà¤È¥«¡¼¥Í¥ë¤Î¥»¥¥å¥ê¥Æ¥£¥ì¥Ù¥ë¤Ë¤Ä...
Àè¤Î sysctl ¤Î½ÐÎϤǤ³¤ì¤ËÁêÅö¤¹¤ë¤Î¤Ï¤É¤³¤«Ä´¤Ù¤è((¥Þ¥Ë...
¤½¤·¤Æ¡¤¤½¤ÎÃͤ¬º£¤É¤¦¤Ê¤Ã¤Æ¤¤¤ë¤«Ä´¤Ù¤è.
¤Þ¤¿¡¤init ¤Î¥Þ¥Ë¥å¥¢¥ë¤òÆɤà¤È¡¤kill ¤Û¤²¤Û¤² 1 ¤Ë¤Ä¤¤¤Æ...
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kill -INT 1
¤ò¹Ô¤Ã¤Æ¤ß¤è(¤¿¤À¤·¡¤root ¤Ç¤Ê¤¤¤È½ÐÍè¤Ê¤¤¤È»×¤¦¤è).
** Daemon [#ma990afc]
¤Ê¤ó¤é¤«¤Î¥µ¡¼¥Ó¥¹¤òÄ󶡤¹¤ë¤¿¤á¤Ë¥Ð¥Ã¥¯¥°¥é¥¦¥ó¥É¤Ç¾ï»þ...
¤¤¤º¤ìºÙ¤«¤¯¼¨¤¹¤¬¡¤¤½¤Î unix ¤Ç²¿¤¬¤Ç¤¤ë¤Î¤«¤Ï daemon ...
¤Þ¤º¤Ï¤É¤ó¤Ê daemon ¤¬º£Æ°¤¤¤Æ¤¤¤ë¤Î¤«¡¤Ì¾Á°¤À¤±¤Ç¤â¤ß¤Æ...
*** ¼Â½¬ [#pdf3306d]
ps, top, lsof ¤Ë¤Ä¤¤¤Æ¤ÎÁàºî¤ò¤·¤Æ¤ß¤Æ¡¤º£¸½ºß¤É¤Î¤è¤¦¤Ê...
* ¥µ¡¼¥Ó¥¹Í׵᤬¤¢¤Ã¤¿¤È¤¤Ëµ¯Æ°¤µ¤ì¤ë¥½¥Õ¥È¥¦¥§¥¢ [#p652...
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-- ¤¹¤°È¿±þ¤Ç¤¤ë(ÍøÅÀ)
-- ¥á¥â¥ê¤ä CPU ¤ò¤½¤ì¤Ê¤ê¤Ë¾ÃÈñ¤¹¤ë(·çÅÀ¡Ë
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¤³¤¦¤·¤¿ÍÑÅӤ˻Ȥï¤ì¤ë¤Î¤¬¡Ö¥¹¡¼¥Ñ¥µ¡¼¥Ð¡×"inetd" ((ÃΤé...
inetd ¤À¤±¤òΩ¤Á¾å¤²¤Æ¤ª¤±¤Ð¡¤É¬Íפ˱þ¤¸¤Æ¸Æ¤Ð¤ì¤¿¥½¥Õ¥È...
¤¿¤À¤·¡¤inetd ¤Ï¤½¤Î¡ÖÊØÍø¤µ¡×¤æ¤¨¤Ë¥»¥¥å¥ê¥Æ¥£Åª¤Ê´Ë¤µ...
** inetd ¤ò»È¤¦¤Ë¤Ï [#t5804c2f]
inetd ¤ò»È¤¦¤Ë¤Ï¡¤
++ /etc/inetd.conf ¤Ç¸Æ¤Ð¤ì¤¿¤éΩ¤Á¾å¤¬¤ë¥½¥Õ¥È¥¦¥§¥¢¤ÎÀß...
++ inetd ¤¬¤½¤â¤½¤âΩ¤Á¾å¤¬¤Ã¤Æ¤¤¤Ê¤¤¤Ê¤é¤ÐΩ¤Á¾å¤²¤ë.
++ ³°¤«¤éÀܳ¤¬É¬Íפʥ½¥Õ¥È¤Î¾ì¹ç¤Ï¡¤Àܳµö²Ä¤ò½Ð¤·¤Æ¤ª¤¯.
¤È¤¤¤¦Ãʳ¬¤òƧ¤á¤Ð¤è¤¤.
°Ê²¼¡¤ÀâÌÀ¤·¤è¤¦.
** inetd ¤ò»È¤¦¤Ë¤Ï: /etc/inetd.conf ¤Î½ñ¤´¹¤¨ [#x0d01acf]
// ¹õËܤΠp.400- ¤ò¸«¤ë¤ÈÃúÇ«¤Ë½ñ¤¤¤Æ¤¢¤ë.
/etc/inetd.conf ¤ò¸«¤ë¤È¼ÂÎ㤬½ñ¤«¤ì¥³¥á¥ó¥È¥¢¥¦¥È¤µ¤ì¤Æ...
7¹àÌܤ¢¤ëÆâÍƤòÂ礶¤Ã¤Ñ¤Ë½Ò¤Ù¤ë¤È¡¤º¸¤«¤é
++ ¥µ¡¼¥Ó¥¹Ì¾: /etc/services ¤Ë½ñ¤«¤ì¤Æ¤¤¤ë¤â¤Î¤È°ìÃפ·...
++ ¥½¥±¥Ã¥È¥¿¥¤¥×: Ä̾ï¤Ï TCP ¤Ê¤é¤Ð stream, UDP ¤Ê¤é¤Ð d...
++ ¥×¥í¥È¥³¥ë: Ä̾ï¤Ï TCP ¤« UDP ¤À. TCP ¤Ï¤ä¤ê¼è¤ê¤ò¤¹¤ë...
++ Àܳ¤·¤Æ¤«¤é¤Î inetd ¤ÎµóÆ°: Ä̾ï¤Ï TCP ¤Ê¤é¤Ð nowait ...
++ Ω¤Á¾å¤²¤ë deamon ¤Î¼Â¹Ô¸¢¸Â: ¥»¥¥å¥ê¥Æ¥£¤ò¹Í¤¨¤ÆÆüì...
++ Ω¤Á¾å¤²¤ë deamon ¤Îpath: ¥½¥Õ¥È¤Îºß½è. internal ¤È¤¤...
++ Ω¤Á¾å¤²¤ë deamon ¤Î¥³¥Þ¥ó¥É: ¥³¥Þ¥ó¥É¥é¥¤¥ó¥ª¥×¥·¥ç¥ó...
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¤Ê¤ª¡¤´û¤Ë inetd ¤¬Æ°¤¤¤Æ¤¤¤ë¾õÂÖ¤Ç /etc/inetd.conf ¤ò½ñ...
kill -HUP (inetd ¤Îpid)
¤È¤¹¤ì¤Ð inetd.conf ¤òÆɤßľ¤·¤Æ¤¯¤ì¤ë.
*** ¼Â½¬ [#l3956fab]
»î¤·¤Ë¡¤¥Í¥Ã¥È¥ï¡¼¥¯¤ÇÀܳ¤·¤Æ¡Öº£Æü¤Î̾¸À¤òʹ¤»¤Æ¤¯¤ì¤ë...
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¤½¤¦¤·¤¿¥×¥í¥°¥é¥à¤Ë¤Ï fortune ¤È¤¤¤¦¤â¤Î¤¬ÃΤé¤ì¤Æ¤¤¤ë¤Î...
»î¤·¤Ë fortune ¤òÆ°¤«¤·¤Æ¤ß¤è¤¦.
&ref(./03.png);
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¤½¤Î¸å¡¤/etc/inetd.conf ¤Ë
qotd stream tcp nowait root /usr/games/fortune fortune
(Á´Éô¤Ç 7¹àÌÜ. ¹àÌܴ֤ϥ¿¥Ö¤Ç¶èÀÚ¤ë)
¤È½ñ¤²Ã¤¨¤ì¤ÐºÇ½é¤Î½àÈ÷¤Ï½ª¤ê.
** inetd ¤ò»È¤¦¤Ë¤Ï: inetd ¤ÎΩ¤Á¾å¤² [#l4fc30eb]
µ¯Æ°»þ¤Ë¤¤¤Ä¤âÆ°¤¯¤è¤¦¤Ë¤·¤Æ¤ª¤¯¤Ë¤Ï¡¤ /etc/rc.conf ¤Ë
inetd_enable="YES"
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//¼êÆ°¤ÇΩ¤Á¾å¤²¤ë¤Ë¤Ï¡¤root ¤Ç
// /etc/rc.d/inetd start
//¤È¤¹¤ì¤Ð¤è¤¤.
*** ¼Â½¬ [#a18246b1]
¾å¤ÎÄ̤ê¤Ë /etc/rc.conf ¤ËÄɵ¤·¤ÆºÆµ¯Æ°¤·¡¤inetd ¤¬Æ°¤¯...
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lsof -i4 -P
¤È¤·¤Æ¡¤¾å¤ÇÀßÄꤷ¤¿¤È¤ª¤ê port 17 ¤Ç inetd ¤¬Ê¹¼ª¤òΩ¤Æ...
** inetd ¤ò»È¤¦¤Ë¤Ï: ³°¤«¤é¤ÎÀܳµö²Ä [#pec750f8]
¥»¥¥å¥ê¥Æ¥£Âкö¤È¤·¤Æ¡¤TCP wrappers ¤Ë¤è¤ë¡ÖÀܳµö²Ä¡×À©...
inetd ¤Ï¥Ç¥Õ¥©¥ë¥È¤Ç¤Ï¤³¤ÎÀܳµö²ÄÀ©ÅÙ¤òÍøÍѤ¹¤ë((ÍøÍѤ·...
¶ñÂÎŪ¤Ë¤Ï¡¤¤³¤Îµö²Ä¤¬¤É¤¦¤Ê¤Ã¤Æ¤¤¤ë¤«¤Ï /etc/hosts.allow...
µ½Ò¤Ï¸«¤ì¤Ðʬ¤«¤ë¤¬¡¤
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ALL : ALL : allow
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*** ¼Â½¬ [#q64dd1f6]
telnet localhost 17
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telnet (Áê¼ê¥Þ¥·¥ó̾) 17
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ALL : localhost : allow
fortune : ALL : deny
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// /etc/rc.d/inetd stop; /etc/rc.d/inetd start
/etc/rc.d/inetd restart
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* Äê´üŪ¤Ëµ¯Æ°¤µ¤ì¤ë¥½¥Õ¥È¥¦¥§¥¢ [#h393fd3f]
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** cron [#de5e4575]
µ¯Æ°¸å¤Ï cron ¤Ï°ìʬËè¤ËÌܳФᡤ¤½¤ÎÅÙ¤ËÀßÄê¥Õ¥¡¥¤¥ë¤ò¥Á...
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cron ¤Ëºî¶È¤ò¤µ¤»¤ë¤¿¤á¤ÎÀßÄê¥Õ¥¡¥¤¥ë¤Ï°ìÈÌ¤Ë crontab ¤È...
++ /var/cron/tabs/¥æ¡¼¥¶Ì¾ ¡Ä ľÀÜ¥¨¥Ç¥£¥¿¤Ç¤¤¤¸¤é¤º¤Ë¡¤"c...
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++ /etc/crontab ¡Ä ¥·¥¹¥Æ¥àÍÑ. ľÀÜ¥¨¥Ç¥£¥¿¤ÇÊÔ½¸¤¹¤ë.
*** ¼Â½¬ [#v92a2c90]
cron ¤ò»È¤Ã¤Æ¤ß¤è¤¦.
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¶ñÂÎŪ¤Ë¤Ï¡¤¥æ¡¼¥¶Ì¾¤Î¤ß¤ò½ñ¤¤¤¿¹Ô¤¬ /var/cron/allow ¤Ë¤¢...
¤½¤¦¤·¤¿¤éÄ̾ï¥æ¡¼¥¶¤Ç cron ¤ò»È¤Ã¤Æ¤ß¤è¤¦.
crontab -e
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*/1 * * * * tail /var/log/messages >> ŬÅö¤Ê¥Õ¥¡¥¤¥ë̾
(Á´Éô¤Ç6¹àÌÜ. ¹àÌܴ֤ϥ¿¥Ö¤Ç¶èÀÚ¤ë. ºÇ¸å¤Î¹àÌÜ "tail ... ...
¤Ê¤É¤ÈÅÐÏ¿¤·¤Æ¤ª¤±¤Ð¡¤messages ¤ÎºÇ¸å¤Î 10¹Ô¤¬ 1ʬËè¤ËÄÉ...
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crontab -l
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(¤¦¤Þ¤¯¤¤¤Ã¤¿¤¢¤È¤ÏºÆ¤Ó crontab -e ¤Ê¤É¤ò»È¤Ã¤ÆÅÐÏ¿¤ò³°¤·...
** periodic [#mf8f3a3d]
Äê´üŪ¤Ë¹Ô¤ï¤ì¤ë¥·¥¹¥Æ¥àºî¶È¤Î¤¦¤ÁÆäËŵ·¿Åª¤Ê¤â¤Î¤Ï /etc...
¤³¤Î periodic ¥³¥Þ¥ó¥É¤Ï cron ¤Ç¤è¤Ð¤ì¤ë¤è¤¦¤Ë¤Ê¤Ã¤Æ¤¤¤ë(...
periodic ¥³¥Þ¥ó¥É¤ÎÀßÄê¤Ï /etc/periodic.conf ¤Ç¤Ê¤µ¤ì¤ë(...
¤½¤Î¥Ç¥Õ¥©¥ë¥ÈÃÍ¤Ï /etc/defaults/periodic.conf ¤Ë½ñ¤«¤ì¤Æ...
** newsyslog [#g64e6727]
newsyslog ¤â cron ¤«¤é¸Æ¤Ó½Ð¤µ¤ì¤ë¤³¤È¤òÁÛÄꤷ¤Æ¤¤¤ë¥½¥Õ...
¶ñÂÎŪ¤Ë¤Ï¡¤¸½ºß¤Î¥í¥°¥Õ¥¡¥¤¥ë¤ò̾Á°¤òÊѤ¨¤ÆÊݸ¤·¤Æ¡¤¿·...
ÀßÄê¤Ï /etc/newsyslog.conf ¤Ç¹Ô¤ï¤ì¤ë.
¤³¤ÎÀßÄê¤òŬÀڤ˹ԤʤäƤª¤«¤Ê¤¤¤È¡¤¥í¥°¥Õ¥¡¥¤¥ë¤¬Â礤¯...
*** ¼Â½¬ [#waeedc41]
/etc/newsyslog.conf ¤òÆɤó¤Ç¡¤º£¤Î»þÅÀ¤Ç¤É¤Î¤è¤¦¤Ê¥í¥°¥Õ...
* ¥ì¥Ý¡¼¥È [#i0fd4f17]
ËÜÆü¹Ô¤Ã¤¿ºî¶È¤Ë¤Ä¤¤¤Æ furihata ¤¢¤Ã¤È cmc.osaka-u.ac.jp ...
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* ¤ª¤Þ¤± [#zfed5918]
ÀλȤï¤ì¤Æ¤¤¤¿ ʸ»úterminal(üËö) ¤È¤Ï¡¤°Ê²¼¤Î¤è¤¦¤Ê¤â¤Î...
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Îɤ¯¤ß¤ë¤È "VT100¥â¡¼¥É" ¤È¤¤¤¦Ê¸»ú¤¬¸«¤¨¤ë¤À¤í¤¦¡¥
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grep vt100 /etc/termcap
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