From: Roman Perepelitsa <roman.perepelitsa@gmail.com>
To: dominik.vogt@gmx.de, Zsh Users <zsh-users@zsh.org>
Subject: Re: Append newline to many files
Date: Sun, 25 Sep 2022 15:30:12 +0200 [thread overview]
Message-ID: <CAN=4vMryQFVz4kckKqVtT=L-nXFrY_i7X-67RywLPYF7XDF-Hw@mail.gmail.com> (raw)
In-Reply-To: <YzBVdjtkqpXnGkvK@gmx.de>
On Sun, Sep 25, 2022 at 3:21 PM Dominik Vogt <dominik.vogt@gmx.de> wrote:
>
> Assume there are thousands of text files that are not terminated
> with a newline. I want to concatenate them all, but add the
> missing newline between files.
>
> This works but takes ten times as much time as "cat foo.*".
>
> for i in foo.*; do cat "$i"; echo; done > out
>
> I can't really think of a fast yet simple solution.
This should work:
print >lf
files=(foo.*)
lf=(lf)
cat -- ${files:^^lf}
rm lf
Roman.
next prev parent reply other threads:[~2022-09-25 13:31 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-25 13:19 Dominik Vogt
2022-09-25 13:30 ` Roman Perepelitsa [this message]
2022-09-26 8:11 ` zzapper
2022-09-26 8:51 ` Dominik Vogt
2022-09-26 19:39 ` Mikael Magnusson
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