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Full Discussion: Passing variable to awk
Top Forums Shell Programming and Scripting Passing variable to awk Post 302529328 by matteo86 on Thursday 9th of June 2011 05:12:31 AM
Old 06-09-2011
Passing variable to awk

Hi,
I'm new with this stuff, but I hope you can help me.

This is what I'm trying to do:

for id in $var; do

awk '{if ($1 == $id) print $2}' merg_data.dat > neigh.tmp


done


I need that for every "id", awk search the first column of the file merg_data.dat which contains "id" and print the second column to the file neigh.tmp

The problem is that writing $id in the awk command seems not working ...

Suggestions?
 

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GSL-HISTOGRAM(1)					      General Commands Manual						  GSL-HISTOGRAM(1)

NAME
gsl-histogram - compute histogram of data on stdin SYNOPSYS
gsl-histogram xmin xmax [n] DESCRIPTION
gsl-histogram is a demonstration program for the GNU Scientific Library. It takes three arguments, specifying the upper and lower bounds of the histogram and the number of bins. It then reads numbers from `stdin', one line at a time, and adds them to the histogram. When there is no more data to read it prints out the accumulated histogram using gsl_histogram_fprintf. If n is unspecified then bins of inte- ger width are used. EXAMPLE
Here is an example. We generate 10000 random samples from a Cauchy distribution with a width of 30 and histogram them over the range -100 to 100, using 200 bins. gsl-randist 0 10000 cauchy 30 | gsl-histogram -100 100 200 > histogram.dat A plot of the resulting histogram will show the familiar shape of the Cauchy distribution with fluctuations caused by the finite sample size. awk '{print $1, $3 ; print $2, $3}' histogram.dat | graph -T X SEE ALSO
gsl(3), gsl-randist(1). AUTHOR
gsl-histogram was written by Brian Gough. Copyright 1996-2000; for copying conditions see the GNU General Public Licence. This manual page was added by the Dirk Eddelbuettel <edd@debian.org>, the Debian GNU/Linux maintainer for GSL. GNU
GSL-HISTOGRAM(1)
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