how to delete ^M

UNIX for Advanced & Expert Users
1

Hi,
I have a file copied from Windows in which there are many ^M, how can I delete them in VI editor ?
Many thanks.

2 
dos2unix <filename>
3

thank you, but how in VI editor ?
Regards.

4

when in vi:

:%s/^M$//

Note: you can get "^M" pressing CTRL+V and next CTRL+M

5

many thanks.

6

cat filename |col -b > newfile works as well

7 
:%s/{CTRL+V}{CTRL+M}//{Enter}

should work too.

I find it easier to just keep a couple shell aliases around

alias unix2dos="perl -i -pe 's/\r//g'"
alias dos2unix="perl -i -pe 's/\n/\r\n/'"

Hope this helps!

8

That's the method I use.

9

Interesting to note that on the way back to dos, you can reverse the process without problem (:%s/$/^V^M/). It's all good. Another interesting insert you may find useful is ^L for form-breaks, but we used that before when "pr" was the normal way to feed the lpd. Now it seems all is a GUI world and WYSIWYG. Much to my own shame I have forgotten most everything I knew about troff/nroff and stick to my Mac editor and even Word when forced by circumstances.

S.

10

and if your vi is really vim then

:set fileformat=unix
will do the trick

:set fileformat=dos
will pop it back