FEATURES :-
·
Multi
programming :-
Multi Programming feature allows many
programs to be executed simultaneously by different users.
·
Time
sharing :-
The programs are
queued and CPU time is shared among them. Each program gets CPU time for a
specific period and is then put back in the queue to wait its turn again as the
next program in the queue is attended to.
·
Multi
tasking :-
A program in
Linux is broken down into tasks, each task being something like reading from or
writing to the disk, or waiting for input from a user. The ability of any
operating system to handle the execution of multiple tasks is known as
multi-tasking.
·
Virtual
Memory :-
The amount of physical memory may
not always be sufficient for executing large applications or having multiple
applications active at a point in time. In such situations a partition( that is
a logical portion of the hard disk) can be utilize as the artificial or virtual
memory.
·
Samba
:-
The name Samba
is derived from the Server Message Block or SMB. SMB is the protocol used
Microsoft operating system to share file and print services.
ADVANTAGES :-
·
Reliability
:-
Linux is a stable operating system.
Linux servers are not shut down for years together. This means that the users
on the Linux operating system work consistently with the Linux server, without
reporting any operating system failures.
·
Simple
Upgrade and Installation Process :-
The
installation procedure of most Linux versions is menu-driven and easy. It
includes the ability to Upgrade from prior versions. The upgrade process
preserves the existing configuration files and maintains a list of its actions
during installation.
·
Multiple
Distributors :-
Linux is
offered by many organizations, each with their own added features. Therefore,
the user has a wide variety of options available. Some distributors of Linux
are Red Hat, Caldera, Mandrake, Debian, and
Slackware.
·
No
Known Viruses :-
Linux is said to be free of any virus
attack. So far there are no known viruses for Linux.
·
Excellent
Security Features :-
Linux offers high security. This is
the reason why many ISPs are replacing their current OSs with Linux.
FREEWARE ________LINUX WEBSITES GIVES
US THE FREE SOFTWARES FOR THE LINUX AND ALSO NO NEED OF ANY SOFTEARW KEY.
IMPORTANT
FUNCTIONS OF LINUX
There
is some type of important functions in Linux like to change a start menu name
like other which below
1...
TO KILL A
PROCESS________________________________________________________________
It’s like a process is working on
another terminal and by another user you have to terminate it or kill it from
another user using another terminal
How to do like running ping command on terminal [TTY 1] on user [gourav]
Tty1 #ping 192.168.100.10
Reply
###########################
Reply
###########################
Tty2 root
Login:
root
Passwd:
] #ps –U gourav_____________ [here
ps: - process, -U: -- user, & gourav: is like any user name]
3248: ping
This
type is how a code shown for the process which is in
working on tty1 on gourav
Now to terminate the process on
gourav user on tty1
]
#kill [code]
Like ]
#kill 3248
Then process of ping is terminated
on the gourav user on terminal tty1
_____________________________________________________________________________________________
2…
To change the NAME on the place of [OK] and [FAILED] when
boot up or shutdown
] # vi /etc/init.d/functions
_________ this is the file that contains the information about that open the file
and go to
The
line 396, insert mode and then edit it by nay name or something you want.
Line: 396
Insert
mode
Edit or modify
Then save and exit
:wq!
Ok
--------------------------------------------------------------------------------------------------------------------------------------------
To change the name before login
Open a file and edit in the last of the file
] #vi /etc/issue_______________
____________________________________________________________________________________________
To change the [motd] massage of the day
] # vi /etc/motd___________________ then write any massage
here for display when login
Like
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
:wq!
To change the MACHINE NAME _______________________
]
# hostname [name]
]
# hostname gourav
