From: Hans Hagen <pragma@wxs.nl>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: Re: Read output of external command
Date: Sun, 14 Apr 2013 13:27:40 +0200 [thread overview]
Message-ID: <516A92AC.5070901@wxs.nl> (raw)
In-Reply-To: <20130414100613.GW5709@homerow>
On 4/14/2013 12:06 PM, Marco Patzer wrote:
> Hi,
>
> I need to read the standard output of an external command. This is
> what I came up with:
>
> \starttext
> \startluacode
> f = io.popen "ls"
> context(f:read "*a")
> \stopluacode
> \stoptext
context(os.resultof("ls"))
> It works with luajittex, plain lua5.1 and lua5.2, but it fails with
> a current luatex:
>
> ! LuaTeX error [string "\directlua "]:3: attempt to index global 'f' (a nil value)
> stack traceback:
> [string "\directlua "]:3: in main chunk.
>
> Why does this fail in luatex but works in lua5.2 ? What is the
> correct way to obtain the output of a command?
>
>
> Marco
>
>
>
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to the Wiki!
>
> maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
> webpage : http://www.pragma-ade.nl / http://tex.aanhet.net
> archive : http://foundry.supelec.fr/projects/contextrev/
> wiki : http://contextgarden.net
> ___________________________________________________________________________________
>
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___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage : http://www.pragma-ade.nl / http://tex.aanhet.net
archive : http://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
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prev parent reply other threads:[~2013-04-14 11:27 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-14 10:06 Marco Patzer
2013-04-14 11:27 ` Hans Hagen [this message]
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