Remove ^M charecters in all files

Shell Programming and Scripting
1

Hi,

I wish to remove special charecters at the end of each line "^M" from all files under a folder and sub-folders.

I do not seem to have dos2unix or Perl and my OS is Linux mymachine 2.6.32-431.5.1.el6.x86_64 #1 SMP Fri Jan 10 04:11:43 IST 2014 x86_64 x86_64 x86_64 GNU/Linux

2

Hello mohtashims,

Following may help you in same.

tr -d '\r' < Input_file >Output_file

Thanks,
R. Singh

3

This may work on a single file .... my requirement is that the command should traverse all directories and sub-directories for all files and remove the special characters.

4

Are these files being delivered by FTP? Perhaps you could force the sending option to ASCII to see if that helps prevent this in the first place.

Kind regards,
Robin

5

I zipped the folder with all files on Windows & used WinScp with SFTP and SCP protocols to upload them to Linux where i see these specil characters. Any guesses ?

6

Try (using GNU sed) :

find /path/to/folder -type f -exec sed -i 's/\r$//' {} +
1 Like
7

This works as champ !!

8

Careful, it will just go ahead and modify any file underneath that directory...
I made a small modification in post #6, which should speed up the command..

10

if is just 1 file you can just use vi itself and remove it.

:%s/^M//g

then to input the control character with the letter m use left hand depress the ctrl key button then other hand type vm

do not type in the the carrot key ^