Deep dive into Kernel

요즘 타요버스가 다닌다고 한다. ㅎㅎ 범준이랑 타러 가야겠네 http://map.daum.net/?map_type=TYPE_MAP&map_terrain=off&urlX=514870&urlY=1102860&urlLevel=9&tayo=on

Ubutu 에서 Linux Bridge 설정하기 auto em4iface em4 inet manual auto br4iface br4 inet static address 192.168.1.4 netmask 255.255.255.0 bridge_ports em4

In a C language, there is a constructor which is loaded in advanced to main() function. main.c#include int abc; int main() {printf("Main function\n");printf("abc=%d\n",abc); return 0;} obj.c#include extern int abc; __attribute__((constructor))void pre_func(void) {printf("[constructor] will be called before main\n");abc = 3; } (1) compile only main.c $ gcc main.c $ ./a.outMain functionabc=0 Compa..

1. 한국어 패키지 설치 # aptitude install language-pack-ko language-pack-ko-base 2. 설정하기 # sudo locale-gen --purge # sudo dpkg-reconfigure locales 4. /etc/environment, /etc/default/locale 환경변수 설정 $ cat /etc/environment PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games" LANG="ko_KR.UTF-8" LANGUAGE="ko_KR:ko:en_GB:en" $ cat /etc/default/locale LANG="ko_KR.UTF-8"

ㅇ VLAN 생성 - VLAN_100, VLAN_200 이란 vlan 그룹을 생성format: set vlans vlan-id root# set vlans VLAN_100 vlan-id 100root# set vlans VLAN_200 vlan-id 200 ㅇ Interface에 VLAN id taggingformat: set vlans interface root# set vlans VLAN_100 interface ge-0/0/0 ㅇ VLAN 설정 확인format: show vlansroot# show vlansVLAN_100 { vlan-id 100; interface { ge-0/0/0.0; ge-0/0/1.0; ge-0/0/2.0; ge-0/0/3.0; ge-0/0/4.0; ge-0/0/5.0; ..

Compile 옵션-g produces debugging information in the OS¹s native format (stabs, COFF, XCOFF, or DWARF 2). -ggdb produces debugging information specifically intended for gdb. -ggdb3 produces extra debugging information, for example: including macro definitions. -ggdb by itself without specifying the level defaults to -ggdb2 (i.e., gdb for level 2).show sharedlibrary (gdb) info sharedlibary To debug..

#!/bin/bash for id in {2..9}do cnode=`printf "cnode%.2d" $id` echo "" echo "----------------- $cnode -------------------" scp $1 root@"$cnode:"$2done 사용법./allcopy.sh

#!/bin/bash for id in {2..9}do cnode=`printf "cnode%.2d" $id` echo "" echo "----------------- $cnode -------------------" ssh root@"$cnode" $@done 사용법./allcmd.sh "ps aux|grep abc" #!/bin/bash if [ $# == 3 ]; then start=$2 end=$3fis=${start-1}e=${end-28} for (( id=$s; id

locale -a | awk '{print ++c}' ++c 를 하면 출력된 라인수를 표시한다.

youtube-dl 이라는 패키지를 다운로드 받으면 참으로 쉽다. http://www.youtube.com/watch?v=wbB6zg7kvFY