life

root@jcjung:~/work# ps -ef | grep tftp
root      2986     1  0 11:06 ?        00:00:00 /usr/sbin/in.tftpd --listen --user tftp --address 0.0.0.0:69 --secure /var/lib/tftpboot
root      3066  1525  0 11:21 pts/2    00:00:00 grep --color=auto tftp

/var/lib/tftpboot : download directory

make test file
root@jcjung:~/work# cat > /var/lib/tftpboot/hello.txt
hello world!
root@jcjung:~/work#
root@jcjung:~/work# cat /var/lib/tftpboot/hello.txt
hello world!
root@jcjung:~/work# ll /var/lib/tftpboot/hello.txt
-rw-r--r-- 1 root root 13 2012-01-17 11:23 /var/lib/tftpboot/hello.txt


set IP of eth1
root@jcjung:~/work# ifconfig eth1 192.168.10.10 up
root@jcjung:~/work# ifconfig
eth0      Link encap:Ethernet  HWaddr 08:00:27:fb:e8:6f 
          inet addr:10.0.2.15  Bcast:10.0.2.255  Mask:255.255.255.0
          inet6 addr: fe80::a00:27ff:fefb:e86f/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:5781 errors:0 dropped:0 overruns:0 frame:0
          TX packets:3824 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:4950678 (4.9 MB)  TX bytes:701903 (701.9 KB)

eth1      Link encap:Ethernet  HWaddr 08:00:27:5d:2c:a6 
          inet addr:192.168.10.10  Bcast:192.168.10.255  Mask:255.255.255.0
          inet6 addr: fe80::a00:27ff:fe5d:2ca6/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:4089 errors:0 dropped:0 overruns:0 frame:0
          TX packets:28 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:541354 (541.3 KB)  TX bytes:5809 (5.8 KB)

apt-get install tftpd-hpa minicom

# setup minicom
minicom -s

            +-----[configuration]------+
            | Filenames and paths      |
            | File transfer protocols  |
            | Serial port setup        |
            | Modem and dialing        |
            | Screen and keyboard      |
            | Save setup as dfl        |
            | Save setup as..          |
            | Exit                     |
            | Exit from Minicom        |
            +--------------------------+

select Serial port setup

    +-----------------------------------------------------------------------+
    | A -    Serial Device      : /dev/tty8                                 |
    | B - Lockfile Location     : /var/lock                                 |
    | C -   Callin Program      :                                           |
    | D -  Callout Program      :                                           |
    | E -    Bps/Par/Bits       : 115200 8N1                                |
    | F - Hardware Flow Control : Yes                                       |
    | G - Software Flow Control : No                                        |
    |                                                                       |
    |    Change which setting?                                              |
    +-----------------------------------------------------------------------+
            | Screen and keyboard      |
            | Save setup as dfl        |
            | Save setup as..          |
            | Exit                     |
            | Exit from Minicom        |
            +--------------------------+

serial port
ttyS0 = com1  ,ttyS1 = com2
usbToSerial port --> ttyUSB0
bluetooth --> rfcomm0
modem -->   ttyACM0



    +-----------------------------------------------------------------------+
    | A -    Serial Device      : /dev/ttyUSB0                              |
    | B - Lockfile Location     : /var/lock                                 |
    | C -   Callin Program      :                                           |
    | D -  Callout Program      :                                           |
    | E -    Bps/Par/Bits       : 115200 8N1                                |
    | F - Hardware Flow Control : No                                        |
    | G - Software Flow Control : No                                        |
    |                                                                       |
    |    Change which setting?                                              |
    +-----------------------------------------------------------------------+

if the HardFlowControl is yes , output is working but input is not working.

root@jcjung:~# dmesg | tail -5
[ 4079.056577] usb 1-2: Setting MaxPacketSize 64
[ 4079.064758] usb 1-2: FTDI USB Serial Device converter now attached to ttyUSB0
[ 4079.064794] usbcore: registered new interface driver ftdi_sio
[ 4079.064801] ftdi_sio: v1.5.0:USB FTDI Serial Converters Driver
[ 4079.147752] ftdi_sio ttyUSB0: ftdi_submit_read_urb - failed submitting read urb, error -22

execute minicom

modprobe
cp hello_md.ko /lib/modules/2.6.32-24-generic/kernel/

root@jcjung:~/work/sample_module# cp hello_md.ko /lib/modules/2.6.32-24-generic/kernel/root@jcjung:~/work/sample_module# modprobe hello_md
FATAL: Module hello_md not found.
root@jcjung:~/work/sample_module# depmod
root@jcjung:~/work/sample_module# modprobe hello_md
root@jcjung:~/work/sample_module# lsmod | grep hello
hello_md                 653  0
root@jcjung:~/work/sample_module# lsmod | grep hello
hello_md                 653  0
root@jcjung:~/work/sample_module# modprobe -r hello_md
root@jcjung:~/work/sample_module# lsmod | grep hello
root@jcjung:~/work/sample_module#

1. add new system call in work/linux-2.6.29/arch/arm/include/asm/unistd.h

#define __NR_newsyscall         (__NR_SYSCALL_BASE+361)


2. register system call tabla
~/work/linux-2.6.29/arch/arm/kernel/calls.S
/* 361 */   CALL(sys_newsyscall)

3. register handler function
in ~/work/linux-2.6.29/arch/arm/kernel/newsyscall.c

  1 #include <linux/kernel.h>
  2
  3 asmlinkage int sys_newsyscall(int n) {
  4     printk("newsyscall called: %d\n", n);
  5     return n * n;
  6 }  

3. compile
modify Makefile like below :
kernel/Makefile
obj-y     = sched.o fork.o exec_domain.o panic.o printk.o \
        cpu.o exit.o itimer.o time.o softirq.o resource.o \
        sysctl.o capability.o ptrace.o timer.o user.o \
        signal.o sys.o kmod.o workqueue.o pid.o \
        rcupdate.o extable.o params.o posix-timers.o \
        kthread.o wait.o kfifo.o sys_ni.o posix-cpu-timers.o mutex.o \
        hrtimer.o rwsem.o nsproxy.o srcu.o semaphore.o \
        notifier.o ksysfs.o pm_qos_params.o sched_clock.o cred.o \
        async.o newsyscall.o


apt-get install libncurses5-dev
ncurses 텍스트 기반의 UI들을 사용하기 위한 library

set cindent
set autoindent
set smartindent
set ts=4
set shiftwidth=4
set nu

set tags=~/work/linux-2.6.29/tags

ctags, cscope

1. ctags package install
apt-get install ctags  vim

2. ctags command
 tj (tag jump)
ctrl+] : move to ctag with keyword on current cursor position.
ctrl+t : move to previous tag

pstree | more

init-+-NetworkManager-+-2*[dhclient]
     |                `-{NetworkManager}
     |-3*[VBoxClient---{VBoxClient}]
     |-VBoxService---7*[{VBoxService}]
     |-acpid
     |-atd
     |-avahi-daemon---avahi-daemon
     |-bonobo-activati---{bonobo-activat}
     |-clock-applet
     |-console-kit-dae---63*[{console-kit-da}]
     |-cron
     |-cupsd
     |-3*[dbus-daemon]
     |-3*[dbus-launch]
     |-firefox---run-mozilla.sh---firefox-bin-+-plugin-containe---{plugin-contai
n}
     |                                        `-10*[{firefox-bin}]
     |-2*[gconfd-2]
     |-gdm-binary-+-gdm-simple-slav-+-Xorg
     |            |                 |-gdm-session-wor-+-gnome-session-+-bluetoot
h-apple
     |            |                 |                 |               |-evolutio
n-alarm---{evolution-alar}

wget http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.29.tar.bz2


root@jcjung:~/work/linux-2.6.29/arch/arm/plat-s3c64xx/include# cd plat/
root@jcjung:~/work/linux-2.6.29/arch/arm/plat-s3c64xx/include/plat# ls
gpio-bank-a.h  gpio-bank-f.h  gpio-bank-n.h  pll.h         s3c6410.h
gpio-bank-b.h  gpio-bank-g.h  gpio-bank-o.h  regs-clock.h
gpio-bank-c.h  gpio-bank-h.h  gpio-bank-p.h  regs-gpio.h
gpio-bank-d.h  gpio-bank-i.h  gpio-bank-q.h  regs-sys.h
gpio-bank-e.h  gpio-bank-j.h  irqs.h         s3c6400.h

http://www.ubun2.com/question/226/how_mount_and_access_windows_shared_folder_ubuntu_linux

You need smbclient to access windows folder for linux
Open a terminal and issue the following command
 
sudo apt-get install smbfs
 
this will install the smbclient as well as the smb file system. smb file system is useful if you want to mount the windows folder in the ubuntu file system.
 
In case if you just want to access the windows folder, just install the smbclient itself without the smbfs
 
sudo apt-get install smbclient
 
Now open the File Browser in ubuntu, using Places->Computer menu link
in the Location bar just type smb://<windows m/c ip or name>/<shared folder name>
for eg. smb://192.168.1.10/Public
  

install juniper network connection on ubuntu

juniper network client doesn't work with OpenJDK. we need to install SUN JDK.

On Ubuntu 13.10 and 12.04 on 32bits

sudo apt-get install openjdk-7-jre icedtea-7-plugin

start firefox and connect VPN server

You should reference it on 64bits Ubuntu. There was a problem to be running on 64 bits Ubuntu.

https://docs.google.com/document/d/1aEqFD---TKsxAVE5g6fY7KyWt7ue52MOOm4B1rqm3n8/edit

install SUN JAVA Plugin 

http://www.jamiesutherland.com/2011/03/03/juniper-network-connect-ubuntu-10-04/

sudo apt-add-repository "deb http://archive.canonical.com/ubuntu lucid partner"

Then a sneaky

sudo apt-get update
sudo apt-get install sun-java6-bin sun-java6-jre sun-java6-plugin sun-java6-jdk





make soft link to add plugin to firefox.


cd /usr/lib/mozilla/plugins

ln -s /usr/lib/jvm/java-6-sun/jre/lib/i386/libnpjp2.so .


restart firefox you have to see the JAVA plugin information on about:plugins page