A. Getting an “Installation” or a “Live” Version of Linux

You can get Linux up and running by using an “installation” version of Linux or by using a “live” version of Linux.

If you have a high-speed connection you can download free installation versions or fre.e live versions of Linux from many
locations on the Internet. These versions are downloaded as “Linux ISO image files” or simply “Linux ISO files”. Linux Tech Tip: An ISO image file is a single file that is an “image” (copy) of an entire CD or DVD. This single (very large)
image file contains thousands of Linux files that are used on an installation version of Linux or a live version of Linux. You
“burn” a single ISO file to CD or DVD to put thousands of Linux operating system files on it.

An installation version of Linux is usually several CDs or one DVD. A live version of Linux is usually just one CD or DVD.
Therefore, you may need one or more ISO files, depending on what you’re downloading. After downloading each ISO file, you burn it to CD or DVD.

Now here’s the good news. You can buy Linux CDs and DVDs online and have them mailed to you for a surprisingly small amount of money. Buying them online is an excellent solution if you don’t have a high-speed connection, or if you just don’t want to be bothered with the “download and burn” method.

B. Installing Linux from CD or DVD

An installation version of Linux on CD or DVD is used to boot a system and then install Linux on the system.

Installing Linux from CD or DVD can be quite tricky and is best done on a new or used system that doesn’t already have an
operating system (such as Windows) installed on it.

Written by Clyde Boom.

From Figure. Will show file systems structure of Unix or Linux Operating system.

Upper on this figure will call Root Directory Under Root Directory contain the many other directory and files. For the Unix or Linux system it will have some directory is created after the OS system install already. And it is the important directory will use for store something on system.

/root or / directory, Root partition is where the root directory resides. It only needs to contain things necessary to boot your system, as well as system configuration files. 50~80 MB works well for most systems.

/bin directory, contain command for user shell.

/sbin directory, contain the command for Born Shell.

/etc directory, contain files configuration files and command for Administrator.

/var directory, use for store Spool File (Mail, Database etc.)

/tmp directory, it same Virtual directory for store Temporary File.

/swap directory, Swap partitions are used to support virtual memory. If the system has 16 MB of RAM or less, you must create a swap partition. Even if you have more RAM, swap is still necessary.

The minimum size of a swap partition should be equal to your physical RAM, or 16 MB (whichever is larger). Red Hat recommends 32 MB for workstation installation and 64 for erver
installation.

/home directory, This is where user’s home directories go.