[Windows] Remote Control software

Team Viewer

http://www.teamviewer.com/en/download/windows.aspx

[Windows] List all devices on the network in command prompt

arp -a


Notes:

What is ARP?

Address Resolution Protocol - which stores the mapping of IP address to physical MAC address.

E.g.




What is dynamic type and static type?

Static type - you hard-coded the rule somewhere.

Dynamic type - the OS automatically find the rules for you when start-up.


Where does the table store?

ARP table stores in RAM in windows. So it clears and updates again after reboot.


Where does the static type rule store in windows?

Use netsh command in windows (remember to run as administrator) to figure it out yourself. ;)


How to clear the static ARP entry?

Run netsh interface ipv4 reset  (remember to run as administrator).

:) Happy networking :D

[Ubuntu] Some Basic Commands

sudo poweroff

sudo reboot

sudo shutdown -h 0

http://askubuntu.com/questions/64995/what-is-the-difference-between-shutdown-and-poweroff-commands

[Ubuntu GUI] shortcut

Ctrl + Alt + L = Lock Screen
Ctrl + Alt + T = Terminal

[Ubuntu] Accidentally "apt-get removed" a package

*Note: Related packages can be removed also.

1) Check what has(have) been removed from log:

sudo vim /var/log/apt/history.log

2) Download back the .deb file(s) with exactly the same package version, Ubuntu version and CPU model from web in another internet-connected computer. Upload them to the ill server('s desktop).

http://serverfault.com/questions/380856/how-to-undo-apt-get-remove

http://packages.ubuntu.com/

3) Install the .deb file(s) in LIFO seq. accd. to log using:

sudo dpkg -i the_deb_file_with_same_version_number_and_cpu_model.deb

4) Restart Ubuntu.

Check if it works or not.

[Ubuntu] Check Ubuntu version

lsb_release -a

[Blogger] Change time zone setting

https://support.google.com/blogger/answer/41963?hl=en