There are two modes of 'vi' - the visual mode and the 'ex' (line mode) environment. By using the colon you are telling vi to switch to the line mode command environment used by 'ex' or 'ed'.
Yes - you have to explicitly tell VI to go to insert mode.
Vi (pronounced vee-eye), the standard screen-oriented editor provided with Unix operating systems, is the ``visual'' mode of the Ex line editor. Both Vi and Ex commands can be issued from within Vi. Source-The Internet.
At least three modes : input mode, command mode, and 'ex' mode.
the text is inputed in vi editor by pressing the i key, that mean get the insert permission into vi editor
The 'vi' editor is a text editor; it can edit anything that is displayable ASCII text. You can edit a password in the password file using 'vi' (not recommended).
You don't. The 'tar' command has nothing to do with the 'vi' editor; it creates an archive files and the vi editor modifies the content of a file.
vi file name
Command mode, and input mode. You switch between them using the ESC key.The two modes of 'vi' are input mode, and command mode. In input mode all you can do is insert text, and in command mode you can make editing changes to existing text (by issuing commands).Switching between the modes is accomplished by pressing the ESC (escape) key.
FromCommand Mode :set nu Display line numbers
I dont know what "iv" is but if you mead "vi" then... type vi "name of the file" to enter the editing mode then type "i" to start typing. when you are done editing type :wq to write then exit vi.
Your question is uncleear; every time you start the 'vi' editor you get another process.
'vi' is the standard text editor for Unix. You use it to edit content of a text file.