how to remove ctrl+M character from makefiles?

[bajajv]

Hi,
I am using windows and cygwin. I have hundreds of makefiles in my project folder, but the problem is that these makefiles contain a ctrl+M character when I open them in cygwin bash vim editor. Because of this I am not able to build any of my makefiles.
Is there any command which could remove this character from all the makefiles in a folder?
Otherwise, in a c program, how can I search for the ctrl+M character..

[Banfa]

In C you can just search for the character value 26. How are ctrl-M characters getting into your files anyway?

[donbock]

Control-M is CR in ASCII encoding.

Different platforms have different conventions for end-of-line termination of text files.

• UNIX: LF
• Windows: CR+LF
• MacOS: CR

Most likely your make files were created on a Windows machine but you are now trying to use them on a UNIX machine. You may have a pair of utilities already installed: dos2unix and unix2dos. These utilities translate end-of-line sequences in text files.

By the way, printf("\n"); emits the platform-specific end-of-line sequence.

[bajajv]

Control-M is CR in ASCII encoding.

Different platforms have different conventions for end-of-line termination of text files.

• UNIX: LF
• Windows: CR+LF
• MacOS: CR

Most likely your make files were created on a Windows machine but you are now trying to use them on a UNIX machine. You may have a pair of utilities already installed: dos2unix and unix2dos. These utilities translate end-of-line sequences in text files.

By the way, printf("\n"); emits the platform-specific end-of-line sequence.

Well yes, I was using windows files in unix.

But downloaded the code again with unix format option selected in cvs, so no problem now.

dos2unix and unix2dos were not available in the bash I am using.

[mac11]

see here for vim tips if you don't have dos2unix/unix2dos:

http://vim.wikia.com/wiki/File_format

[Oralloy]

There is a vi/vim sequence, which I often use to remove the extraneous carriage returns in individual files.

:%s/^V^M//g

where ^V and ^M are <ctrl-V> and <ctrl-M>, respectively.

And yes, I realize that this solution is not viable for bulk file processing, although you might be able to use sed for that.

[Banfa]

That's what I like about vim, the commands are so intuitive :D

And yes I do see that it is actually a RegEx

[Oralloy]

Not only intuitive after 30 years of use, but they were mnemonic from the start, which is why I still love and use vi. *grin*