From: Marco Patzer <homerow@lavabit.com>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: Read output of external command
Date: Sun, 14 Apr 2013 12:06:13 +0200 [thread overview]
Message-ID: <20130414100613.GW5709@homerow> (raw)
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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
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
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next reply other threads:[~2013-04-14 10:06 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-14 10:06 Marco Patzer [this message]
2013-04-14 11:27 ` Hans Hagen
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