Some useful UNIX command

Daily work require me to work faster and familiar with the OS.
UNIX OS is one of them.

Here some unix command help my daily life:
ls - list file
chmod - change file permission
umask - set default file/directory creation permission
rm - remove
rmdir - remove directory
touch filename - create new file
mkdir - create new directory

References:
UNIX Tutorial for Beginners http://www.ee.surrey.ac.uk/Teaching/Unix/

Ease my typing in Windows command prompt

I love the command prompt UI, to ease the typing auto-complete feature is available.
I'm happy that Windows have this feature.
But is a bit messy because you need to enable it manually.

Here is the info and reference page:
SUMMARY
File name completion and folder name completion are quick-search features of the Windows NT command processor, Cmd.exe. When you type a path or a file name and then press TAB, Cmd.exe searches for all files whose path and file name match your entry.
NOTE: Automatic complete for CMD.exe is not enabled by default in Windows 2000 and later.
When you type a path and then press the TAB key, the command processor searches for all files whose path (but not necessarily the file name) matches your entry. The command processor displays one of the matching file names each time you press TAB. To go backward through the list of file names, press SHIFT+TAB. This article describes how to enable automatic complete for Cmd.exe.
MORE INFORMATION
Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
322756 How to back up and restore the registry in Windows
To enable automatic complete for Cmd.exe, use Registry Editor (Regedt32.exe) to view the following registry key:
HKEY_CURRENT_USER/Software/Microsoft/Command Processor
Edit the CompletionChar value, and set the value of REG_DWORD to 9. Note that you do not need to restart your computer.
APPLIES TO
Microsoft Windows 2000 Server
Microsoft Windows 2000 Professional Edition
Microsoft Windows NT Server 4.0 Standard Edition
Microsoft Windows NT Workstation 4.0 Developer Edition

http://technet.microsoft.com/en-us/kb/kb00244407.aspx

Better Tools for Hacking Wireless

There is good tools to reduce time to start hacking wireless AP.
It's reduce your time to setup your environment before start using aircrack to hack.

The tool is Backtrack3 (Kindly read the supported Wireless Adaptor before purchasing them):
www.remote-exploit.org/backtrack.html

To understand more on Backtrack 3:
http://en.wikipedia.org/wiki/BackTrack

It works well for me =P
"Wireless free for life!"