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Full Discussion: Extracting data from a shell output?
Top Forums Shell Programming and Scripting Extracting data from a shell output? Post 302282810 by TECK on Monday 2nd of February 2009 12:24:11 AM
Old 02-02-2009
Thanks a lot guys!
This is what I have so far:
Code:
result=$($indexer delta | awk '/^total.*docs/ {printf "docs=%d size=%d", $2, $4; exit}')
eval $result
echo $docs

Output:
1953887

Is there a more compact way to write the $result line or to incorporate the eval into it? I'm new at shell scripting, thank you for understanding...

Ideally, I would like to have a function that does the job, because I want to use it for different indexes (ie. alpha, beta, delta, etc.):
Code:
indexer="/usr/bin/indexer"
function fetch_indexinfo()
{
	result=$($indexer $0 | awk '/^total.*docs/ {printf "docs=%d size=%d", $2, $4; exit}')
	eval $result
}

Not sure how write the function, honestly. I plan to use it this way:
Code:
fetch_indexinfo delta
echo $docs
echo $size

The function will execute the command, then grab for the outputted text the values I'm interested (like it does it now with the direct command).
 

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LEARN ABOUT DEBIAN

dualcoax

dualcoax(1)						      General Commands Manual						       dualcoax(1)

NAME

       dualcoax - determine impedance of a coaxial structure with two concentric dielectrics.

SYNOPSIS

       dualcoax D1 D2 D3 Er1 Er2

DESCRIPTION

       dualcoax computes the impedaance of a dualcoaxial cable, with two concentric dielectrics, given the outside diameter of the inner conductor
       D1, the outside diameter of the inner dielectric D2, the outside diameter of the outer dielectric (which is also the inside diameter of the
       outer conductor) D3, as well as the relative permttivity of the inner dielectric Er1 and the outer dielectric Er2.

FILES

       dualcoax does not read/write any files.

SEE ALSO

       atlc(1)
       coax(1)
       create_bmp_for_circ_in_circ(1)
       create_bmp_for_circ_in_rect(1)
       create_bmp_for_microstrip_coupler(1)
       create_bmp_for_rect_cen_in_rect(1)
       create_bmp_for_rect_cen_in_rect_coupler(1)
       create_bmp_for_rect_in_circ(1)
       create_bmp_for_rect_in_rect(1)
       create_bmp_for_stripline_coupler(1)
       create_bmp_for_symmetrical_stripline(1)
       design_coupler(1)
       find_optimal_dimensions_for_microstrip_coupler(1)
       readbin(1)

       http://atlc.sourceforge.net	- Home page
       http://sourceforge.net/projects/atlc   - Download area
       /usr/local/share/atlc/docs/html-docs/index.html	- HTML docs
       /usr/local/share/atlc/docs/qex-december-1996/atlc.pdf - theory paper
       /usr/local/share/atlc/examples	 - examples

Dr. David Kirkby					     atlc-4.6.0 28th Oct 2003						       dualcoax(1)
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