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From: arisawa@ar.aichi-u.ac.jp
To: Fans of the OS Plan 9 from Bell Labs <9fans@cse.psu.edu>
Subject: Re: [9fans] Environment variable
Date: Wed,  9 Aug 2006 21:04:32 +0900	[thread overview]
Message-ID: <96B9C0FD-D1B1-4374-B247-1DCE7109C75C@ar.aichi-u.ac.jp> (raw)
In-Reply-To: <20060809113942.GC5077@shodan.homeunix.net>


On 2006/08/09, at 20:39, Martin Neubauer wrote:
> Well, now I have tried. It doesn't do the trick.
> b=`{cat /env/a}^''
> gives a warning if a is an empty string but works otherwise.
> b=$`{basename /env/a}
> is the cleanest solution, I think.

The solution is same as
b=$a
this works if a is already a shell variable.

Try
c=''	# null string
a=()
b=()
cp /env/c /env/a
then exec
b=$`{basename /env/a}



  reply	other threads:[~2006-08-09 12:04 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-08-04  9:37 [9fans] vmware? Anssi Porttikivi
2006-08-04  9:47 ` Lluís Batlle i Rossell
2006-08-04 15:15   ` Richard Bilson
2006-08-04 15:44     ` erik quanstrom
2006-08-07 22:14       ` Richard Bilson
2006-08-07 23:50         ` Federico Benavento
2006-08-04 19:03     ` Gorka guardiola
2006-08-09 10:00       ` [9fans] Environment variable arisawa
2006-08-09 11:03         ` Martin Neubauer
2006-08-09 11:16           ` arisawa
2006-08-09 11:27             ` Martin Neubauer
2006-08-09 11:36               ` arisawa
2006-08-09 11:39               ` Martin Neubauer
2006-08-09 12:04                 ` arisawa [this message]
2006-08-09 12:26                   ` Martin Neubauer
2006-08-09 12:39                     ` Martin Neubauer
2006-08-09 12:58                       ` arisawa
2006-08-09 13:22                         ` arisawa
2006-08-09 13:30                         ` Martin Neubauer
2006-08-10  2:15                         ` erik quanstrom
2006-08-09 12:03               ` [9fans] editor, man/less, dns setup, screen setup bituman
2006-08-09 12:08                 ` Martin Neubauer
2006-08-09 12:08                 ` Robert Raschke
2006-08-19  0:45                   ` Rodolfo (kix)
2006-08-10  2:09         ` [9fans] Environment variable erik quanstrom

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