emacs -nw filename.c  ----> opens a file name "filename.c" 
     start typing..... 
  ctrl (control) 
  ctrl-x ctrl-s            saves the file "filename.c" 
  ctrl-x ctrl-c            Quit and go to the prompt 
  ctrl-d                   delete the char where the cursor is at 
  ctrl-k                   yank the current line (delete) 
      after you use ctrl-k and move the cursor to an open space  
      and hit ctrl-y it will paste the last line. 
  ctrl-x 2(n)              this will open two emacs windows 
  ctrl-x 1                 this will bring back to only one window 
  ctrl-x o                 this will move cursor from one emacs window to the                           other 
  ctrl-s                   search a word 
  ctrl-a                   move the cursor to the beginning to the line 
  ctrl-e                   move the cursor to the end of the line 
  Esc shift >              this will move the cursor to the end of the file 
  Esc shift <              this will move the cursor to the beginning of the file 
   
  if you want to cut and paste multiple lines do the following 
    
  move the cursor to where you want to begin 
  then hit ctrl-spacebar this will mark set 
  then hit ctrl-n this will move the cursor down 
  stop where ever you want to then hit ctrl-w . this will yank the whole lines. 
   
  and move the cursor to where ever you want to paste  and use ctrl-y to paste. 
  
  ctrl-p will move the cursor to one line up       
  
  

 
     vi filename.c opens the file 
     i   this will allow you to input text. make sure you hit i to input. 
     a   a is i + appends one space 
     j   Moves cursor down one line, same column.  
     k   Moves cursor up one line, same column.  
     h   Moves cursor back one character.  
     l   Moves cursor forward one character.  
     0   moves to the beginning of the line 
     $   moves to the end of the line    
     Esc stops input mode (no entry is permitted) 
  
     x   Deletes current character.  
     dd  Deletes current line.  
     dw  Deletes the current word.  
     d)  Deletes the rest of the current sentence.  
     D, d$     Deletes from cursor to end of line.  
     P     Puts back text from the previous delete. 
     ZZ  Exits vi and saves changes.  
     :wq  Writes changes to current file and quits edit session.  
     :q!  Quits edit session (no changes made).