Inittab and Run levels:
Inittab contains information of system initialization. The
system initialization script
/etc/rcS.d
runs first then the run
level 5
/etc/rc5.d
Matrix-504 uses run level for system setup
and the default run level is number 5. Please refer to
introduction to linux (http://tille.garrels.be/training/tldp/) for
information about run level. Following is the run levels
setting:
Run level 0: halt
Run level 1 is single user ( login and service are disabled )
Run level 2~5 are multiple users
Run level 6 is reboot.
Please refer to loader menu section for selection of run level
Power on and System boot up
Once Matrix-504 is correctly power on, it will start boot Linux
kernel and mount file system. You can use Ethernet and telnet
and login Matrix-504. Once kernel loaded, it will find
/sbin/
init
and execute it. The initialization configuration is at
/etc/
inittab
. Once boot up, you can use telnet to login Matrix-504.
Factory Default Settings
LAN 1 IP Address: 192.168.2.127
Login: root or guest ( telnet guest only)
Password: root or guest ( telnet guest only)
Serial Console Port:
Baud rate: 115200
Data format: 8 Bits, No Parity, 1 Stop bit (N,8,1)
Flow Control: None
Terminal type: VT100
Network Settings
Use
vi
editing tool to edit the
/etc/network/interfaces
for network
setting. The default setting is static IP 192.168.2.127. Matrix-504
also supports Wireless LAN. Use
wireless_essid XXX
wireless_key YYY
To add SSID and WEP key if necessary. XXX is SSID and YYY
is WEP Key
Matrix-504 supports USB WLAN adaptor (Ralink RT2571).
You can enable the driver module (rt73usb) by adding
rt73usb
in
/etc/modules
File System
The 128MB NAND Flash memory of Matrix-504 contains Boot
loader (uBoot), Linux Kernel, Root File System and user disk
(\home). The file system and disk space are shown as follow
Default started service
1.
amgrd (Artila broadcast search daemon)
2.
ssh (secured shell) with sftp
3.
syslog/klogd (system and kernel log)
4.
telnet server (disable root with
/etc/securetty
)
5.
ftp server (vsftp)
6.
web server (apache2)
7.
Ready LED (debug LED for internal use)
Insert kernel module
To insert kernel module while system boot up, please use
vi
to
edit
/etc/modules
to add module to load e.g.
rt73usb
To load the USB WLAN adaptor.
