Experimental Physics and
Industrial Control System

Brian McAllister wrote:
> 
> >>> On 5/27/2002 at 16:29:19 EDT, Vitaliy Ziskin wrote:
> 
>   > I try do the following :
> 
>   > caput channelName.VAL -1
> 
>   > and get the following:
> 
>   > caput: invalid option -- 1
>   > Old : channelName.VAL           0.00
> 
>   > What's going on?
> 
> You're on GNU/Linux.
> 
> ...
>
> The work-around is to put
> 
>     setenv POSIXLY_CORRECT
> 
> in your shell startup.
> 

Another work-around is to put the negative value in quotes,
with a space between the opening quote and the minus sign,
like so:

caput channelName.VAL " -123"

This keeps unfriendly parsers away from your argument.  :-)

-- 

William L. Cruise                             [email protected]
Electronics System Supervisor                   FAX:    808 885-7288
Canada-France-Hawaii Telescope                  Voice:  808 885-3121
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Kamuela, HI   96743

Replies:

Re: error in caput ("caputting negative numbers") Matthieu Bec

References:

Re: error in caput ("caputting negative numbers") Brian McAllister

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