Here’s what you actually need to do to install Aircrack for Ubuntu :

1. From your Ubuntu Desktop, go to System > Administration > Synaptic Package Manager
2. Click Search, then type in “aircrack”
3. Click the checkbox next to “aircrack-ng”
4. Click the Apply button
5. Wait for Ubuntu to download and install AirCrack automatically for you
6. Look for the AirCrack icon under Applications > Internet

or just simply type this :

sudo apt-get install aircrack-ng

By default root account is locked under Ubuntu Linux. Therefore, you cannot login as root or use ’su -’ command to become a superuser. To run all administrative command use sudo command. sudo allows a permitted user to execute a command as the superuser or another user. Ubuntu setup your default account (the one created during installation) to run all administrative commands.

For example create a new user called bar, you need to type sudo command as follows:
$ sudo adduser bar
Password:

When sudo asks for a password, you need to supply YOUR OWN password. In other words a root password is not needed. Here are few more examples.

John the Ripper is a free password cracking software tool. Initially developed for the UNIX operating system, it currently runs on fifteen different platforms (11 architecture-specific flavors of Unix, DOS, Win32, BeOS, and OpenVMS). It is one of the most popular password testing/breaking programs as it combines a number of password crackers into one package, autodetects password hash types, and includes a customizable cracker. It can be run against various encrypted password formats including several crypt password hash types most commonly found on various Unix flavors (based on DES, MD5, or Blowfish), Kerberos AFS, and Windows NT/2000/XP/2003 LM hash. Additional modules have extended its ability to include MD4-based password hashes and passwords stored in LDAP, MySQL and others. You will take the following steps to installing John the Ripper and cracking passwords using it:

Open a terminal window, and use the following command:

sudo apt-get install mysql-server-4.1

If you are running PHP you will also need to install the php module for mysql 4:

sudo apt-get install php4-mysql

To create a new database, use the mysqladmin command:

mysqladmin create

You’ll first need to download the UNetbootin software and save it somewhere useful, since there’s no installation required, just double-click to run.

I chose to use an already downloaded ISO image of the Ubuntu installation cd, and then chose my flash drive, and clicked the OK button. Yes, this step is as simple as that.

The process will extract the files from the ISO image (or download them), copy them to the flash drive and then install the bootloader. Depending on what you are installing, this really doesn’t take very long.

FreeBSD comes with Nginx startup script located at /usr/local/etc/rc.d directory.
Update /etc/rc.conf

All you have to do is add following line to your /etc/rc.conf file:

nginx_enable=”YES”
Once added use the following command to control nginx web server. You must be root user to control nginx.
Start Nginx Web Server Command

# /usr/local/etc/rc.d/nginx start
Stop Nginx Web Server Command

# /usr/local/etc/rc.d/nginx stop
Restart Nginx Web Server Command

# /usr/local/etc/rc.d/nginx restart
Test Nginx config file for errors

The -t option will just test the configuration file. nginx checks configuration for correct syntax and then try to open files referred in configuration.
# nginx -c /usr/local/etc/nginx/nginx.conf -t

1. Mozilla Thunderbird

Mozilla Thunderbird is a free, open source, cross-platform e-mail and news client developed by the Mozilla Foundation. Features like quick search, saved search folders , advanced message filtering, message grouping, and labels help manage and find messages. Just like Firefox, the tons of extensions and themes for this client makes it very secure and flexible to enhance your productivity.

1. Cinelerra

Cinelerra is a prosumer non-linear video editing system. It is designed for the GNU/Linux operating system. Cinelerra includes support for very high-fidelity audio and video: it processes audio using 64 bits of precision, and can work in both RGBA and YUVA color spaces, using floating-point and 16-bit integer representations, respectively. It is resolution and frame rate-independent, meaning that it can support video of any speed and size.

Cinelerra’s interface is similar to that of other nonlinear video-editing systems, such as Adobe Premiere Pro. However, because it includes a compositing engine, it may also be likened to compositing software such as Adobe After Effects or Shake. The user is presented with four screens:

1. 7-Zip ( Archiver )

7-Zip is a file archiver and open source software. No need to use winzip or anything else. It does everything for you without paying a single penny:

1. Supports many formats:
   1. Packing / unpacking: 7z, ZIP, GZIP, BZIP2 and TAR
   2. Unpacking only: ARJ, CAB, CHM, CPIO, DEB, DMG, HFS, ISO, LZH, LZMA, MSI, NSIS, RAR, RPM, UDF, WIM, XAR and Z.
2. Fast.
3. Free and open source.
4. High compression ratio.
5. Works best with Windows operating systems.

• Download 7-Zip

These are the guideline for how to report bugs. Take a look at this list below before you submit bugs:

1. Before getting unsettled, read this manual through and through. Also, see the GNU GRUB FAQ.
2. Always mention the information on your GRUB. The version number and the configuration are quite important. If you build it yourself, write the options specified to the configure script and your operating system, including the versions of gcc and binutils.
3. If you have trouble with the installation, inform us of how you installed GRUB. Don’t omit error messages, if any. Just `GRUB hangs up when it boots’ is not enough.