I'm new to Ruby and was wondering how to sort a text file?
With UNIX scripts, I just use "cat input.txt | sort > output.txt".
···
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Posted via http://www.ruby-forum.com/.
open("output.txt"){|f| f.write IO::readlines("input.txt").sort}
-a
···
On Fri, 6 Jan 2006, Danny Abc wrote:
I'm new to Ruby and was wondering how to sort a text file?
With UNIX scripts, I just use "cat input.txt | sort > output.txt".
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ara [dot] t [dot] howard [at] noaa [dot] gov
all happiness comes from the desire for others to be happy. all misery
comes from the desire for oneself to be happy.
-- bodhicaryavatara
===============================================================================
Danny Abc wrote:
I'm new to Ruby and was wondering how to sort a text file?
With UNIX scripts, I just use "cat input.txt | sort > output.txt".
ruby -e 'puts ARGF.sort' input1.txt input2.txt input3.txt
Danny Abc wrote:
I'm new to Ruby and was wondering how to sort a text file?
With UNIX scripts, I just use "cat input.txt | sort > output.txt".
You are entitled to the "useless cat award". 
Any reason why you don't
just do
"sort input.txt > output.txt"?
robert
I'm new to Ruby and was wondering how to sort a text file?
> With UNIX scripts, I just use "cat input.txt | sort > output.txt".
Why not sort <input.txt >output.txt?
That cat is totally superfluous.
'Andreas
···
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Wherever I lay my .emacs, there's my $HOME.
Danny Abc wrote:
I'm new to Ruby and was wondering how to sort a text file?
With UNIX scripts, I just use "cat input.txt | sort > output.txt".
--
Posted via http://www.ruby-forum.com/.
Why can't I just let these things go?
i use:
$ sort -o outfile.txt infile.txt
No pipes, and you can use the same file name if you don't want to keep
both files.
Alternatively, sticking with the command-line thing, how about:
cat input.txt | ruby -e 'puts $stdin.sort' > output.txt
···
On Thu, 05 Jan 2006 21:28:08 -0000, <ara.t.howard@noaa.gov> wrote:
On Fri, 6 Jan 2006, Danny Abc wrote:
I'm new to Ruby and was wondering how to sort a text file?
With UNIX scripts, I just use "cat input.txt | sort > output.txt".
open("output.txt"){|f| f.write IO::readlines("input.txt").sort}
-a
--
Ross Bamford - rosco@roscopeco.remove.co.uk
Robert Klemme wrote:
Danny Abc wrote:
I'm new to Ruby and was wondering how to sort a text file?
With UNIX scripts, I just use "cat input.txt | sort > output.txt".
You are entitled to the "useless cat award".
My neighbor's cat won that already.
> Any reason why you don't
just do
"sort input.txt > output.txt"?
Regarding his original question, I think if he has large files to
sort, he might be well off just using the Unix sort utility. If he
has complex logic, of course, he can still control it all in Ruby.
I haven't tested it, but I can't help expecting that on a large
file, system("sort...") would be the efficient way.
Hal
Well, cat does not write its arguments so you are pretty sure it is
the input argument whatever command you put next in the pipeline.
Plus there was a shell once where input redirection did not work and
one replaced it with cat and |. At least that is how I learned to use
useless cats extensively.
Anyway, cats are nice 
Thanks
Michal
···
On 1/6/06, Robert Klemme <bob.news@gmx.net> wrote:
Danny Abc wrote:
> I'm new to Ruby and was wondering how to sort a text file?
>
> With UNIX scripts, I just use "cat input.txt | sort > output.txt".You are entitled to the "useless cat award".
Any reason why you don't
just do
"sort input.txt > output.txt"?
--
Support the freedom of music!
Maybe it's a weird genre .. but weird is *not* illegal.
Maybe next time they will send a special forces commando
to your picnic .. because they think you are weird.
www.music-versus-guns.org http://en.policejnistat.cz
You don't need that input redirect. Input takes a filename as an
argument, so you can simply do this:
sort input.txt > output.txt
···
On Sat, Jan 07, 2006 at 11:23:00PM +0900, Andreas Eder wrote:
> I'm new to Ruby and was wondering how to sort a text file?
> With UNIX scripts, I just use "cat input.txt | sort > output.txt".Why not sort <input.txt >output.txt?
That cat is totally superfluous.
--
Chad Perrin [ CCD CopyWrite | http://ccd.apotheon.org ]
"Real ugliness is not harsh-looking syntax, but having to
build programs out of the wrong concepts." - Paul Graham
Hal Fulton wrote:
Robert Klemme wrote:
Danny Abc wrote:
I'm new to Ruby and was wondering how to sort a text file?
With UNIX scripts, I just use "cat input.txt | sort > output.txt".
You are entitled to the "useless cat award".
My neighbor's cat won that already.
Oh, on what basis? Does it catch no mice?
> Any reason why you don't
just do
"sort input.txt > output.txt"?Regarding his original question, I think if he has large files to
sort, he might be well off just using the Unix sort utility. If he
has complex logic, of course, he can still control it all in Ruby.
+1
I haven't tested it, but I can't help expecting that on a large
file, system("sort...") would be the efficient way.
+1
robert
Michal Suchanek wrote:
Danny Abc wrote:
I'm new to Ruby and was wondering how to sort a text file?
With UNIX scripts, I just use "cat input.txt | sort > output.txt".
You are entitled to the "useless cat award".
don't just do
"sort input.txt > output.txt"?Well, cat does not write its arguments so you are pretty sure it is
the input argument whatever command you put next in the pipeline.
I'm sorry, what do you mean by that? Do you mean to say that cat only
reads and so there is no danger of overwriting a file? Unix command line
tools that acutally write to a file named on the command line are rather
seldom; there are quite a few that use an option for that. Never occurred
to me that this extra level of security was needed.
Plus there was a shell once where input redirection did not work and
one replaced it with cat and |. At least that is how I learned to use
useless cats extensively.
You don't need a shell without redirection - sort sorts the files named on
its command line. I doubt it ever behaved differently.
Anyway, cats are nice
Certainly! See http://www.flickr.com/photos/99776024@N00/sets/1697461/
Kind regards
robert
···
On 1/6/06, Robert Klemme <bob.news@gmx.net> wrote:
~ ryan ~
···
On Jan 6, 2006, at 8:52 AM, Robert Klemme wrote:
Anyway, cats are nice
Certainly! See http://www.flickr.com/photos/99776024@N00/sets/1697461/
J. Ryan Sobol wrote:
Uh, oh, need to upload a picture of our "Tyron in the Sink".
robert
···
~ ryan ~
On Jan 6, 2006, at 8:52 AM, Robert Klemme wrote:
Anyway, cats are nice
Certainly! See http://www.flickr.com/photos/99776024@N00/sets/
1697461/
Has the venerable tradition of Friday cat blogging made its way into
ruby-talk? 
Robert Klemme wrote:
···
J. Ryan Sobol wrote:
Uh, oh, need to upload a picture of our "Tyron in the Sink".
robert
~ ryan ~
On Jan 6, 2006, at 8:52 AM, Robert Klemme wrote:
Anyway, cats are nice
Certainly! See http://www.flickr.com/photos/99776024@N00/sets/
1697461/
--
vjoel : Joel VanderWerf : path berkeley edu : 510 665 3407