Create file with LF (not CRLF) in windows

ruby-talk
1

Hi,
I have a bunch of files that I want to convert from CRLF to just LF.
How might I do this? I'm testing with the following example file
(steel.rb):

f = File.new("steel", "w")
f.syswrite("steel\ncity");
f.close

I then run this from cygwin and get the following output

Ben Anderson@andersonbd1 /cygdrive/c/ruby
$ ruby steel.rb

Ben Anderson@andersonbd1 /cygdrive/c/ruby
$ cat -v steel
steel^M
city

How might I get rid of the CR and just have ruby use an LF?
Thanks,
Ben

2

I have a bunch of files that I want to convert from CRLF to just LF. How might I do this? I'm testing with the following example file
(steel.rb):

f = File.new("steel", "w")
f.syswrite("steel\ncity");
f.close

Try in "binary" mode.

f = File.new("steel", "wb")

BTW, if you use blocks, you can omit the f.close:

File.new("steel", "wb") do |f|
  f.print("steel\ncity")
end

(See also IO#binmode )

Regards,

Bill

···

From: "Ben Anderson" <benanderson.us@gmail.com>

3

Ben Anderson wrote:

Hi,
I have a bunch of files that I want to convert from CRLF to just LF. How might I do this? I'm testing with the following example file
(steel.rb):

f = File.new("steel", "w")
f.syswrite("steel\ncity");
f.close

I then run this from cygwin and get the following output

Ben Anderson@andersonbd1 /cygdrive/c/ruby
$ ruby steel.rb

Ben Anderson@andersonbd1 /cygdrive/c/ruby
$ cat -v steel
steel^M
city

How might I get rid of the CR and just have ruby use an LF?

Just as in many other languages, use "wb" instead of "w".

···

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John W. Kennedy
"But now is a new thing which is very old--
that the rich make themselves richer and not poorer,
which is the true Gospel, for the poor's sake."
   -- Charles Williams. "Judgement at Chelmsford"

4

yes - there it is. Thanks Bill.

···

On 12/29/05, Bill Kelly <billk@cts.com> wrote:

From: "Ben Anderson" <benanderson.us@gmail.com>
>
> I have a bunch of files that I want to convert from CRLF to just LF.
> How might I do this? I'm testing with the following example file
> (steel.rb):
>
> f = File.new("steel", "w")
> f.syswrite("steel\ncity");
> f.close

Try in "binary" mode.

f = File.new("steel", "wb")

BTW, if you use blocks, you can omit the f.close:

File.new("steel", "wb") do |f|
  f.print("steel\ncity")
end

(See also IO#binmode )

Regards,

Bill

5

Bill Kelly:

File.new("steel", "wb") do |f|
  f.print("steel\ncity")
end

Warning: File::new() does not take block; use File::open() instead.

Malte

6

Perhaps it makes a difference which binary you use, windows vs.
cygwin. I am usign the cygwin Ruby and it did not exhibit the
behavior you mentioned.

Regards,
Jason

···

On 12/29/05, Ben Anderson <benanderson.us@gmail.com> wrote:

yes - there it is. Thanks Bill.

7

Bill Kelly:

File.new("steel", "wb") do |f|
  f.print("steel\ncity")
end

Warning: File::new() does not take block; use File::open() instead.

Ooops! Thanks for catching that! O:-)

Bill

···

From: "Malte Milatz" <malte__@gmx-topmail.de>