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Forum: Shell Programming and Scripting 01-06-2012

AWK filter from file and print

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awk 'NR==FNR{a[$2]=$1;next}$1 in a {print a[$1],...

awk 'NR==FNR{a[$2]=$1;next}$1 in a {print a[$1], $0}' FS=":" OFS=: filter.dat data.dat >! out.dat

Forum: Shell Programming and Scripting 01-06-2012

AWK filter from file and print

3,606

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Note that vgersh99's code assume that $2 of the...

Note that vgersh99's code assume that $2 of the filter file are all distincts...

(which is currently the case in the given example, but if your real filter file is bigger, you should then check...

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