Linux Create Ad-Hoc Network

Create ad-hoc network
    iwconfig wlan0 mode ad-hoc essid "yourssid"

Specify IP
    ifconfig wlan0 10.0.0.1 netmask 255.0.0.0 up

Linux Ethernet Bonding

Set NICs as slaves
    vi /etc/sysconfig/network-scripts/ifcfg-eth0

    DEVICE=eth0
    USERCTL=no
    ONBOOT=yes
    MASTER=bond0
    SLAVE=yes
    BOOTPROTO=none


    vi /etc/sysconfig/network-scripts/ifcfg-eth1

    DEVICE=eth1
    USERCTL=no
    ONBOOT=yes
    MASTER=bond0
    SLAVE=yes
    BOOTPROTO=none


    vi /etc/sysconfig/network-scripts/ifcfg-bond0

    DEVICE=bond0
    IPADDR=192.168.0.1
    NETMASK=255.255.255.0
    ONBOOT=yes
    BOOTPROTO=none
    USERCTL=no


    vi /etc/modprobe.conf

   alias bond0 bonding
   option bond0 miimon=100 mode=3



mode Description
balance-rr or 0  Round-robin policy: Transmit packets in sequential order from the first available slave through the last. This mode provides load balancing and fault tolerance.

active-backup or 1  Active-backup policy: Only one slave in the bond is active. A different slave becomes active if, and only if, the active slave fails. The bond's MAC address is externally visible on only one port (network adapter) to avoid confusing the switch.

balance-xor or 2  XOR policy: Transmit based on the selected transmit hash policy. The default policy is a simple

broadcast or 3

Broadcast policy: transmits everything on all slave interfaces. This mode provides fault tolerance.

802.3ad or 4

IEEE 802.3ad Dynamic link aggregation. Creates aggregation groups that share the same speed and duplex settings. Utilizes all slaves in the active aggregator according to the 802.3ad specification.

balance-tlb or 5 Adaptive transmit load balancing: channel bonding that does not require any special switch support. The outgoing traffic is distributed according to the current load (computed relative to the speed) on each slave. Incoming traffic is received by the current slave. If the receiving slave fails, another slave takes over the MAC address of the failed receiving slave.

balance-alb or 6  Adaptive load balancing: includes balance-tlb plus receive load balancing (rlb) for IPV4 traffic, and does not require any special switch support. The receive load balancing is achieved by ARP negotiation.

Create Custom Linux Initrd

Extract from Initrd
gunzip < initrd.img | cpio -i --make-directories

Create Initrd
find ./ | cpio -H newc -o > initrd.cpio
gzip initrd.cpio
mv initrd.cpio.gz initrd.img



Create Initrd from System Folder
mkinitrd /boot/initrd.$(uname -r).img $(uname -r) 

Install Chewing Input Method

yum install ibus ibus-chewing

Start Second X Window

startx -- :1

Windows and Linux Spoof MAC Address

Linux
    ifconfig eth0 hw ether 00:11:22:33:44:55

Windows 

Registry
[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4D36E972-E325-11CE-BFC1-08002bE10318}\0008]

"NetworkAddress"="001122334455"
or GUI
Start/Settings/Network Connections/Local Area Connection
Properties/Configure ...

Advanced




Advanced (Another example)

grub2 Recovery

Set target Linux partition as root
    root=(hd0,6)

(You may list content of the root)
    ls /

Specify kernel file and Linux root
    linux /boot/vmlinuz root=/dev/sda6

Specify initial RAM disk
    initrd /boot/initrd

Boot
    boot

WiMAX Connection

Install
    yum install wimax

Run Service
    wimaxd

Turn Radio
    wimaxcu ron

Scan Network (and Get Network ID)
    wimaxcu scan

Connect Network
    wimaxcu connect network 16205833


Obtain IP
    dhclient wmx0



Disconnect Network
    wimaxcu dconnect




   

Linux Sleep and Hibernate Command

Suspend to Disk (Hibernate)
    echo -n "disk" > /sys/power/state
or

pm-hibernate

Suspend to RAM (Sleep)
    echo -n "mem" > /sys/power/state
or

pm-suspend