command vi -w /etc/aliases is not opening in VIM editor
 

gives the following message

VIM - Vi IMproved
~
~ version 7.2.148
~ by Bram Moolenaar et al.
~ Modified by <bugzilla@redhat.com>
~ Vim is open source and freely distributable
~
~ Become a registered Vim user!
~ type :help register<Enter> for information
~
~ type :q<Enter> to exit
~ type :help<Enter> or <F1> for on-line help
~ type :help version7<Enter> for version info

vi --help said that:

Forget the option, just do

vim (Or vi) /etc/aliases

(vi is prob symlinked to vim)

Thank you

Thank you :)

Please explain detail about alaises concept
 

Vi /etc/alaises why we use this.... how to use .please explain in detail

Hello saravanan.25ece,

It is not a good idea to use an old thread. If you have any query you can create a new thread with a proper tittle.

For your answer

go to this link
http://dictionary.reference.com/browse/alias

now once you understand the meaning this is used in mail server like postfix to give an alias name entry for any existing user on your machine.

I hope that clears your doubt.