From: arisawa@ar.aichi-u.ac.jp
To: Fans of the OS Plan 9 from Bell Labs <9fans@cse.psu.edu>
Subject: [9fans] echo -n
Date: Mon, 20 Nov 2006 17:40:24 +0900 [thread overview]
Message-ID: <F0327090-D611-46AC-A6D6-CD89B2D07CB9@ar.aichi-u.ac.jp> (raw)
Hello,
I have a question:
echo -n
writes 0 length byte to stdout.
Is this intentional specification?
If it is, what is intended for the specification?
Output to pipe by a rc script such as
echo -n $foo
can close the pipe if $foo is empty.
Therefore we are obliged to write
if(~ $foo ?*)
echo -n $foo
Kenji Arisawa
next reply other threads:[~2006-11-20 8:40 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-11-20 8:40 arisawa [this message]
2006-11-20 9:45 ` Martin Neubauer
2006-11-20 10:42 ` lucio
2006-11-20 17:35 ` maht
2006-11-20 12:46 ` Russ Cox
2006-11-20 14:41 ` John Stalker
2006-11-20 14:59 ` Dave Lukes
2006-11-20 14:59 ` Axel Belinfante
2006-11-20 15:34 ` ron minnich
2006-11-20 15:43 ` erik quanstrom
2006-11-20 16:37 ` Joel Salomon
2006-11-20 18:49 ` Russ Cox
2006-11-20 19:16 ` Francisco J Ballesteros
2006-11-20 19:57 ` Joel Salomon
2006-11-20 20:18 ` Federico Benavento
2006-11-20 20:38 ` Russ Cox
2006-11-20 21:00 ` Joel Salomon
2006-11-20 21:05 ` Francisco J Ballesteros
2006-11-20 21:55 ` Russ Cox
2006-11-20 22:11 ` Francisco J Ballesteros
2006-11-20 22:24 ` Martin Neubauer
2006-11-20 23:14 ` Gorka guardiola
2006-11-20 23:22 ` Francisco J Ballesteros
2006-11-20 23:57 ` Gorka guardiola
2006-11-21 3:24 ` lucio
2006-11-20 19:32 ` Joel Salomon
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