Question

Question says it all, I’ve got a 500,000 line file that gets generated as part of an automated build process on a Windows box and it’s riddled with ^M‘s. When it goes out the door it needs to *nix friendly, what’s the best approach here, is there a handy snippet of code that could do this for me? Or do I need to write a little C# or Java app?

Answer 1

Here is a Perl one-liner, taken from http://www.technocage.com/~caskey/dos2unix/

#!/usr/bin/perl -pi s/\r\n/\n/;

You can run it as follows:

perl dos2unix.pl < file.dos > file.unix 

Or, you can run it also in this way (the conversion is done in-place):

perl -pi dos2unix.pl file.dos 

And here is my (naive) C version:

#include <stdio.h>  int main(void) {    int c;    while( (c = fgetc(stdin)) != EOF )       if(c != '\r')          fputc(c, stdout);    return 0; } 

You should run it with input and output redirection:

dos2unix.exe < file.dos > file.unix