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Old 03-26-2009, 02:43 PM   #1
Geneset
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Registered: Jan 2007
Location: Athlone, ROI
Distribution: Ubuntu Hardy Desktop, Solaris 10, Workstation 2008 x64
Posts: 75

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Question pipe gnuplot + while read does not behave as expected


Hi folks, hope your all well.

I'm piping the output from gnuplot and want to log each line of output separatly. This is what i have so far

Code:
gnuplot $CMD 2>&1 | while read line; do 
    log $line
done
Looks simple right? I'm assuming that read parses newlines

Problem is the log is like this
Code:
${log prefix stuff}: FIRST LINE OF ERROR
NEXT LINE OF ERROR
NEXT LINE OF ERROR
...
etc etc and so forth.

Anyone have any genius idea I completely missed?

Regards
G

:Edit
Should have said that the logging function works fine in about 200 other places im using it. Throw it a string and it records it and prints it the way its supposed to.

Last edited by Geneset; 03-26-2009 at 02:44 PM. Reason: Update
 
Old 03-29-2009, 03:23 PM   #2
MrUmunhum
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Registered: May 2006
Location: Mt Umunhum, CA, USA
Distribution: Debian/ Fedora
Posts: 413

Rep: Reputation: 33
Quote:
Originally Posted by Geneset View Post
Problem is the log is like this
Code:
${log prefix stuff}: FIRST LINE OF ERROR
NEXT LINE OF ERROR
NEXT LINE OF ERROR
...
What did you expect to see? Something like this?
Code:
${log prefix stuff}: 
FIRST LINE OF ERROR
NEXT LINE OF ERROR
NEXT LINE OF ERROR
...
What OS are you running?
 
  


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gnuplot, loop, pipe, read, while


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