在Windows中,对500k行文件执行dos2unix的最佳方法是什么? [英] What's the best way of doing dos2unix on a 500k line file, in Windows?
问题描述
问题全部说明了,我有一个500,000行文件是在Windows框上自动生成过程的一部分,并且被 ^ M 困扰.当它发布时,它需要 * nix 友好,这是最好的方法,是否有方便的代码片段可以帮助我实现这一目标?还是我需要编写一些C#或Java应用程序?
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?
推荐答案
这是Perl的单行代码,取自 http://www.technocage.com/~caskey/dos2unix/
Here is a Perl one-liner, taken from http://www.technocage.com/~caskey/dos2unix/
#!/usr/bin/perl -pi
s/\r\n/\n/;
您可以按以下方式运行它:
You can run it as follows:
perl dos2unix.pl < file.dos > file.unix
或者,您也可以通过这种方式运行它(转换是就地完成的):
Or, you can run it also in this way (the conversion is done in-place):
perl -pi dos2unix.pl file.dos
这是我的(原始)C版本:
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;
}
您应该使用输入和输出重定向来运行它:
You should run it with input and output redirection:
dos2unix.exe < file.dos > file.unix
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