linuxÏÂ×¥Êý¾Ý°ü
linuxϵͳÈçºÎץȡÊý¾Ý°ü½øÐзÖÎö
(2009-08-30 23:59:37) linuxÉÏÓÐÁ½ÖֱȽϺõÄ×¥°ü¹¤¾ß£ºetherealºÍtcpdump
¶ÔÓÚethereal£¬ÓÐͼÐνçÃæºÍ×Ö·û½çÃæÁ½ÖÖ·½Ê½¡£
µ½linuxϵͳÉÏÖ´ÐÐrpm -qa | grep ethereal-gnome¿É²é¿´ÊÇ·ñ°²×°ÁËͼÐΰ汾
µ«ÊÇÈç¹û·þÎñÆ÷ÉÏûÓÐxwinͼÐλ·¾³£¬ÄÇô¾ÍÖ»ÄÜÓÃ×Ö·û½çÃæÁË
ÃüÁtethereal
¿ÉÑ¡²ÎÊý£º-V¡¢-f
Èç¹ûÖ»Ö´ÐÐtethereal£¬ÄÇô½«Ö»×¥È¡Êý¾Ý°üµÄ°üÍ·£¬²»ÏÔʾÀï±ßµÄÄÚÈÝ¡£¼ÓÉÏ-V²ÎÊýºó£¬¼´¿ÉÏÔʾÄÚÈÝ¡£
-f ²ÎÊýÓÃÓÚ¹ýÂË£¬Ä¬ÈÏÇé¿öϽ«×¥È¡tcpºÍudpËùÓÐÐÒé¡£
Èç¹ûÏëץȡUDPÊý¾Ý°ü²¢ÏÔʾÄÚÈÝ£¬ÔòÖ´ÐÐtethereal -V -f udp ¼´¿É
ÁíÍ⻹¿ÉÒÔÅäºÏgrepÃüÁîÌáÈ¡ÐèÒªµÄ¹Ø¼üÄÚÈÝ
tcudumpÃüÁîÊÇÁíÍâÒ»¸öÓÐÓõŤ¾ß£¬Ö»ÄÜÔÚ×Ö·ûÏÂʹÓã¬
tcpdump -n -nn -vv -XX -tttt -c 10 -e
²ÎÊý£º
-n£ºÊý×ֶ˿Ú
-nn£ºÊý×ÖµØÖ·
-vv£ºÊä³öÏêϸÐÅÏ¢
-c£º×¥È¡°üµÄÊýÁ¿
-e£º´òÓ¡ÒÔÌ«Íø±¨Í·ÐÅÏ¢
-i£ºÑ¡ÔñÊÊÅäÆ÷
Ïà¹ØÎĵµ£º
tcÊǸöÅäÖÃLinuxÄÚºËÁ÷Á¿¿ØÖƵŤ¾ß Ãû×Ö tc - ÏÔʾ£¯Î¬»¤Á÷Á¿¿ØÖÆÅäÖà ժҪ tc qdisc [ add | change | replace | link ] dev DEV [ parent qdisc-id | root ] [ handle qdisc-id ] qdisc [ qdisc specific parameters ] tc class [ add | change | replace ] dev DEV parent qdisc-id [ classid class-id ] qd ......
st='abcd'
1.×Ö·û´®³¤¶È
expr length $st »òÕß ${#st}
2.È¡×Ö·û´®µÄsubstring
expr substr "$var" startpos length »òÕß ${var:m} ${var:m:len}
${var:m}ÖеÄmµÄÈ¡Öµ´Ó0µ½${#var}-1£¬Æä·µ»ØµÄÊÇ´ÓµÚm¸ö×Ö·ûµ½×îºóµÄ²¿·Ö£»ÀýÈçecho ${st:1}µÄ½á¹ûÊÇ'bcd'
expr substr "$var" startpos length ÖеÄstartposÈ¡Öµ·¶Î§ÊÇ ......
~/test
|
|
|------main.c
|------lib
| |
| |------StringLen.h
| |------Strlen.c
| |------Strnlen.c
----------------StringLen.h:
#ifndef _STRING ......
topÃüÁîÊÇLinuxϳ£ÓõÄÐÔÄÜ·ÖÎö¹¤¾ß£¬Äܹ»ÊµÊ±ÏÔʾϵͳÖи÷¸ö½ø³ÌµÄ×ÊÔ´Õ¼ÓÃ×´¿ö£¬ÀàËÆÓÚWindowsµÄÈÎÎñ¹ÜÀíÆ÷¡£ÏÂÃæÏêϸ½éÉÜËüµÄʹÓ÷½·¨¡£ top - 01:06:48 up 1:22, 1 user, load average: 0.06, 0.60, 0.48
Tasks: 29 total, 1 running, 28 sleeping, 0 stopped, 0 zombie
Cpu(s): 0.3% us, 1.0% sy, 0.0% ni, ......
Îå´ó·Ç³£¼ûLinuxÃüÁî
2010-1-29
µ¼¶Á£º±¾ÎĽéÉÜLinux²»³£¼ûµÄÎå¸öÃüÁî¡£°üÀ¨logsave¡¢diff3ºÍpstreeµÈ¡£
¹Ø¼ü´Ê£ºLinux logsave diff3 pstree
ÕýÔÚ¼ÓÔØÊý¾Ý...
¡¾TechTargetÖйúÔ´´¡¿LinuxÓдóÁ¿µÄÃüÁîÐй¤¾ß£¬´ÓÿÌ춼»áʹÓõÄls¡¢cdÒÔ¼°psÕâЩ¹¤¾ß£¬µ½Äú¿ÉÄÜ»¹Ã»ÓÐʹÓùý£¬»òÕßÉõÖÁûÓÐÌý˵¹ýµÄ²»³ ......