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bidirectional pipe by Spawn on UNIX [message #16874]

Sun, 22 August 1999 00:00

Ivo Labbe
Messages: 2
Registered: August 1999

Junior Member

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Hello,
While writing to an piped shell process from IDL in an unix environment
goes fine, I seem to be unable to read from it. Type conversion errors
all over the place. I'm obviously doing something wrong and IDL help is
not explicit on the subject. What is the preferred way to read the output
from a spawned piped child process?
Ivo
<pre>-- 
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      "We are all in the gutter, but some of us are looking at the stars"

Ivo Labbe
Leiden Observatory
Room : 558     &nb sp;     &nb sp;     &nb sp;     &nb sp;    Email: ivo@strw.leidenuniv.nl
Phone: (+31) (0)715275805    &nbs p;     &nbs p;  WWW  : <A HREF="http://www.strw.leidenuniv.nl/~ivo">http://www.strw.leidenuniv.nl/~ivo</A>

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Re: bidirectional pipe by Spawn on UNIX [message #16906 is a reply to message #16874]

Tue, 24 August 1999 00:00

John D. Sample
Messages: 11
Registered: August 1999

Junior Member

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Are you using READU?  It must be an unformatted read.  Then, the variable that gets read into, should be assigned the proper type before the read.   In my very limited experience...that is. 
 
Chip 
 
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In article <37BFF575.B3BB20A4@strw.leidenuniv.nl>, Ivo Labbe <ivo@strw.leidenuniv.nl> wrote: 
 
 
<BLOCKQUOTE>Hello, 
 
While writing to an piped shell process from IDL in an unix environment goes fine, I seem to be unable to read from it. Type conversion errors all over the place. I'm obviously doing something wrong and IDL help is not explicit on the subject. What is the preferred way to read the output from a spawned piped child process? 
 
Ivo -- 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~ 
       "We are all in the gutter, but some of us are looking at the stars" 
 
Ivo Labbe 
Leiden Observatory 
Room : 558                                Email: ivo@strw.leidenuniv.nl 
Phone: (+31) (0)715275805               WWW  : http://www.strw.leidenuniv.nl/~ivo 
 
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