Read Command Output in Vim

In order to insert output of a command while in Vim
editor. Just give following command.

:r !any_command

Replace any_command with the command you want to use.


 22
 23 

Suppose we want insert date at line number 23,
goto line number 23, by pressing
G23
Then type following command
:r !date

 22
 23 Sat May  9 20:15:56 IST 2009

Convert DOS EOL (End of Line) to Linux EOL

This is useful when you do not have dos2unix command.
You can determine whether a file is having DOS End of Line.

$ od -c dos_file.txt | grep "\\\r" | wc -l
If you see any output other than 0, then this file
is having \r\n as new line (i.e DOS EOL).

1. Suppose you want to convert EOL of dos_file.txt . Open this
file using vim as:

$ vim dos_file.txt

2. If ^M (Ctrl-M) character is at end of every line, then this file
is in DOS format. We have to remove this ^M from the end
of line. Therefore, go to Edit mode by pressing Esc (Escape
button).

3. Type
:%s/^M$//g

And viola!, you will find that all ^M has gone from end of line.

4. Now, save the file and exit.

PS. In order to type ^M on screen, you should press Ctrl-v Ctrl-m
Otherwise this method will not work.

Alternatively, you can use sed to remove ^M from end of line, given
as following:

$ sed 's/^M$//g' dos_file.txt > temp
$ mv temp dos_file.txt