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Re: Bug#467378: coreutils: Please include a program to truncate files
From: |
Russell Coker |
Subject: |
Re: Bug#467378: coreutils: Please include a program to truncate files |
Date: |
Tue, 26 Feb 2008 22:32:45 +1100 |
User-agent: |
KMail/1.9.5 |
On Tuesday 26 February 2008 21:03, Pádraig Brady <address@hidden> wrote:
> > That depends on your definition of "works".
> > If you don't mind retaining the first 2GiB of content in
> > a preexisting output file, then it works fine. But the initial
> > truncation is required if you want to be sure it's a big sparse
> > file with nothing but NUL bytes.
> >
> > Try this:
> >
> > echo foo > k
> > dd bs=1 seek=2G of=k < /dev/null
> > head -c4 k
> >
> > and note that it prints "foo\n".
>
> That's how I would expect it to work,
> and is how I'm currently implementing it.
> Given the name "truncate" I think this
> operation should be obvious to users.
What exactly do you mean by "how I expect it to work", do you mean "reducing
the file size" or "removing all content and extending it to size N"? The
latter is not truncation, it's replacement.
- Re: Bug#467378: coreutils: Please include a program to truncate files, Jim Meyering, 2008/02/25
- Re: Bug#467378: coreutils: Please include a program to truncate files, Pádraig Brady, 2008/02/25
- Re: Bug#467378: coreutils: Please include a program to truncate files, Russell Coker, 2008/02/25
- Re: Bug#467378: coreutils: Please include a program to truncate files, Jim Meyering, 2008/02/25
- Re: Bug#467378: coreutils: Please include a program to truncate files, Russell Coker, 2008/02/25
- Re: Bug#467378: coreutils: Please include a program to truncate files, Jim Meyering, 2008/02/25
- Re: Bug#467378: coreutils: Please include a program to truncate files, Paul Eggert, 2008/02/25
- Re: Bug#467378: coreutils: Please include a program to truncate files, Russell Coker, 2008/02/25
- Re: Bug#467378: coreutils: Please include a program to truncate files, Jim Meyering, 2008/02/26
- Re: Bug#467378: coreutils: Please include a program to truncate files, Pádraig Brady, 2008/02/26
- Re: Bug#467378: coreutils: Please include a program to truncate files,
Russell Coker <=
- Re: Bug#467378: coreutils: Please include a program to truncate files, Pádraig Brady, 2008/02/26