With this in mind, there is an application that you can install on your Linux box that acts a dock for you. This application is called KDocker.

This application is available for the following Linux distributions:

• Suse
• Slackware
• Red Hat
• Debian
• Kubuntu

For easy install in Ubuntu/Gnome, you can perform the following syntax in at the command line:

sudo apt-get install kdocker

This application is great for making your Linux GUI’s appearance like Apple OS X!

/System/Library/CoreServices/DefaultDesktop
.jpg (Leopard users)

/Library/Preferences/com.apple.loginwindow (Tiger users: modify this file)

Once this has been done, open a Terminal window and execute this line at the command prompt:

sudo defaults write
/Library/Preferences/com.apple.loginwindow
DesktopPicture '/Path/To/Picture.jpg' (all on one line)

Once this has been done, log out of your account. When you log out, you should instantly see the changes that you have made.

1. In Terminal, type emacs at the comment. Emacs will then appear for you.
2. In the Emacs window, press <ESC>. This will bring you to the note buffer section (shown below).
   
3. Once you are in the buffer section, press x, type in tetris, and then hit Enter.
4. Tetris will then appear for you (shown below).
   

To move your pieces around in Tetris, use your right/left arrow keys in the direction you want the piece to move. Your up/down arrow keys will change the position of the piece, and your space bar will shoot the piece down the bottom.

This is a fun and interesting Easter Egg included in this classic editor!

Thankfully, TheAppleBlog’s Andrew Bednarz has assembled a compendium of Mac OS X terminal tips, tweaks, and tricks. He shows how to use Visor, a cool program that provides an always-accessible pulldown terminal prompt just like the console in the video game Quake. He also shares some insider UNIX knowledge on tweaking Terminal.app to display color-coded directory listings and more informative command prompts.

Go check out his list of tips. Your command line will thank you.

Ex: alias mc 'locate log_error | grep -R 192.168.1.1 *'

Your command can be as long or as short that you want to alias. I also use it to setup ssh connections.

Ex: alias con1 'ssh usrname@192.168.1.1'

Now any time I type con1 it will try to make an ssh connection to that ip address.

diff file1.txt file2.txt

It takes file2.txt and compares it to file1.txt and displays the differences that are in file2.txt. You may also want to use the -b options in the command because that will allow it to ignore differences in white space. This command is very useful in programming when you have a backup version of a script that you just modified. If the script no longer works it can help you track down bugs, by looking at backup version of the script that does work.

Example

kill -9 2342

If you type top again you should see that the process that was associated with that PID is no longer running.

Below, you will see all the processes that are running on your computer. It gives most of the info about the processes that you will ever need to know. The main columns I focus on are PID, USER, %CPU, and %MEM. They are to me the most useful. PID is the process ID which is very useful when a program freezes. USER is who is running the program. %CPU is the amount of processing power the program is using. %MEM IS the amount of memory the program is taking up.

Top by itself only gives you information on what is running, but when you combine it with other commands, it makes it very powerful. We will get into that next time.

Example:

locate report

You can also search for all files with a certain extension.

Example:

locate '*.jpg'

You may be saying why would I want to do such a specific search? Well lets say you are a web designer that need to modify a template file for all your websites that contain a certain function. Say the function was called capcha and all your template files end in .tpl. You would use you the | command to combine the two function together to accomplish this.

Example:

locate '*.tpl' | grep -R 'capcha' *

This works by running the locate command and then using grep on just the file names that locate returns. Yes you could just type grep -R 'capcha' *, but you would have to be in the root directory of your hard drive and the grep command would search every file on our computer. That would take a long time to complete, and if you are running the search on a web server you could bring it to its knees.

The basic structure of a grep statement is below.

grep -R "string you are looking for" *

The -R in the statement means you want to search recursively. Make sure you put the “” around your string or you will get an error when you try to execute the command. The * means that the preceding item will be matched zero or more times.

Their are many more options that can be added into the grep function to make it even more useful. To find them type the following into the command line.

man grep