19-05-2012, 01:39 PM
Unix Basic’s
Unix Basic’s.ppt (Size: 212.5 KB / Downloads: 31)
What is Unix?
UNIX is an operating system which was first developed in the 1960s, and has been under constant development ever since. By operating system, we mean the suite of programs which make the computer work. It is a stable, multi-user, multi-tasking system for servers, desktops and laptops.
What is LINUX?
Linux (often pronounced LIH-nuhks with a short "i") is a Unix-like operating system that was designed to provide personal computer users a free or very low-cost operating system comparable to traditional and usually more expensive Unix systems. Linux has a reputation as a very efficient and fast-performing system. Linux's kernel (the central part of the operating system) was developed by Linus Torvalds at the University of Helsinki in Finland. To complete the operating system, Torvalds and other team members made use of system components developed by members of the Free Software Foundation.
Difference between Unix & Linux
There are many differences, one being that all versions of Linux are not the same, with the many distributions about, they all look the same but run a little differencetly, Unix is the older version, few developers developed it and change the name as LINUX – like UNIX
1. UNIX is very old and Linux is based on it
2. Linux is a good desktop OS while UNIX lacks the user
friendliness needed for general computing
3. UNIX is intended for mainframes and high end
computers and cannot run on PCs while Linux can go
from mainframes down to low end personal computers
4. UNIX is proprietary while Linux is shared using the
Licensing of the GNU
Difference between Linux & Windows
Linux is a open-source OS.People can change code and add programs which will help to use your computer better. you can't change any thing in windows. you can't even see which processes do what and build your own extension. Linux wants the programmers to extend and redesign it's OS time after time, so it beats Windows or at least is as good as windows.
All the flavors of Windows come from Microsoft, the various distributions of Linux come from different companies (i.e. LIndows , Lycoris, Red Hat, SuSe, Mandrake, Knopping, Slackware).
For desktop or home use, Linux is very cheap or free, Windows is expensive. For server use, Linux is very cheap compared to Windows. Microsoft allows a single copy of Windows to be used on only one computer but you can run LINUX on any number of computers for no additional charge
You have to log on to Linux with a userid and password. This is not true in Windows. Typically Windows 9x does not ask for a userid/password at boot time and, even if it does, this can be easily bypassed.
Windows uses FAT12, FAT16, FAT32 and/or NTFS with NTFS almost always being the best choice. Linux also has a number of its own native file systems. Windows separates directories with a back slash, Linux uses a normal forward slash.
Windows file names are not case sensitive. Linux file names are . For example "abc" and "aBC" are different files in Linux, whereas in Windows it would refer to the same file
Windows allows programs to store user information (files and settings) anywhere. This makes it impossibly hard to backup user data files and settings and to switch to a new computer. In contrast, Linux stores all user data in the home directory making it much easier to migrate from an old computer to a new one.
Linux is generally free software, while Windows is not