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From: Chris Elvidge <chris@mshome.net>
Newsgroups: comp.graphics.apps.gnuplot
Subject: Re: command from inside gnuplot
Date: Tue, 7 Nov 2023 10:16:27 +0000
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Xref: csiph.com comp.graphics.apps.gnuplot:4550

On 07/11/2023 09:24, Jörg Buchholz wrote:
> Hi,
> 
> i have a problem to use a system command from inside gnuplot.
> 
> sed -i 's/^\xef\xbb\xbf//' ./process-2023-11-02-13-04-40.csv
> 
> works at the terminal
> 
> 
> system "sed -i 's/^\xef\xbb\xbf//' ./process-2023-11-02-13-04-40.csv"
> and
> system(sprintf("sed -i 's/^\xef\xbb\xbf//' 
> ./process-2023-11-02-13-04-40.csv"))

Shouldn't that be just:
system("sed -i 's/^\xef\xbb\xbf//' ./process-2023-11-02-13-04-40.csv")
After all, sprintf isn't a system command and you're not expecting any 
output.

> 
> in a gnuplot script do not work, but gnuplot shows me
> 
> GPVAL_SYSTEM_ERRNO = 0
> GPVAL_SYSTEM_ERRMSG = "Success"
> 
> 
> as a test I try
> 
> system "cp ./process-2023-11-02-13-04-40.csv 
> ./process-2023-11-02-13-04-40.test"
> 
> this works, the file process-2023-11-02-13-04-40.test was created.
> 
> 
> what's wrong?
> 
> Jörg



-- 
Chris Elvidge, England
RUDOLPH'S RED NOSE IS NOT ALCOHOL-RELATED