You type "vi filenameyouwanttoedit" on the command line.
I recommend getting a book for more details. We certainly can't teach you everything there is to know about vi here.
vi
Shift-g / capital G
You don't Shell files/programs are not compiled. If you want to run a process through 'vi' then use the ':!' 'ex' command to shell out and execute it.
At the command prompt, type 'man [command]' (removing the brackets and substituting the command for which you need information).
cp.
For Unix/Linux, use the command 'cd /' For Windows, you can also use the same command or 'cd \'
k is not a standard command in Linux.
For Linux, use the 'mv' command, which is a rename
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.
mount
The c99 command is a wrapper program that actually calls 'cc'. This is the standard c compiler for Linux. Since other Unix based systems use a c99 command to call the compiler with the 1999 standards there is a similar command to do the same thing under Linux.
You want to do that from command line? Create folder DATA with mkdir DATA. (You should have permissions to create it) If you want to create an empty file, just say touch DATA/myfile.txt Or you can use the vi editor to write to the file (vi will open the file if it exists else will create that file for you), just type vi DATA/myfile.txt You may need to learn some vi keys before you try that. On Linux, try vimtutor! And just in case you think it is boring to type DATA/something... do CD DATA after creating the directory (folder) . Enjoy :)