A few tricks using vi for increased? productivity:
Global Search and Replace
:% s#changefrom#changeto#g
Delete from the cursor to the end of the line:
D
Replace from here to the end of line:
C
Delete All Remaining Lines in a File, (from here to the end of the file delete)
:.,$d
Return to the Command-Line Temporarily (in case you forgot to backup the file?)
!ls
!cp myfile mybackupfile
Change Word
cw
Repeat the Last Action
.
