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 # This filter requires one command line option of form -vN=n# where n must be a decimal number.## Repeat each input line containing $$ n times, replacing $$ with 0...n-1.# Replace each $# with n, and each $* with a single $. BEGIN {	n = N + 0}{	if (/\$\$/) { rep = n } else { rep = 1 }	for (i = 0; i < rep; ++i) {		tmp = $0		gsub(/\$\$/, i, tmp)		gsub(/\$\#/, n, tmp)		gsub(/\$\*/, "$", tmp)		print tmp	}}

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