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From: arisawa@ar.aichi-u.ac.jp
Subject: Re: [9fans] Environment variable
Date: Wed,  9 Aug 2006 22:22:03 +0900
To: Fans of the OS Plan 9 from Bell Labs <9fans@cse.psu.edu>
Topicbox-Message-UUID: 9b2633f4-ead1-11e9-9d60-3106f5b1d025


On 2006/08/09, at 21:58, arisawa@ar.aichi-u.ac.jp wrote:

> * Martin Neubauer (m.ne@gmx.net) wrote:
>
>>>
>>> I see what you are trying to accomplish. Probably
>>> b=$"`{cat /env/a}
>>> will do.
>>>
>>
>> And iterating a bit further, I found this doesn't work with out a
>> temp:
>> tmp=`{cat /env/a}
>> b=$"tmp
>>
>
> term% a=()
> term% xd -c /env/c
> 0000000   a  l  i  c  e 00
> 0000006
> term% c=''		# null string
> term% cp /env/c /env/a
> term% xd -c /env/a
> 0000000  00
> 0000001
> term% b=$`{cat /env/a}
> rc: variable name not singleton!
> term% b=$"`{cat /env/a}
> rc: variable name not singleton!
> term%
> term%
> term% t=`{cat /env/a}
> term% xd -c /env/t
> 0000000
> 0000000
> term% b=$t
> term% xd -c /env/t
> 0000000
> 0000000
> term% b=$"t
> term% xd -c /env/t
> 0000000
> 0000000
> term%
>
> NG!
>
>

Oh! That works!
It is so hot tonight that I did incorrect experiment.
Sorry!