files/common/sbin/shuf


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#!/usr/bin/awk -f
BEGIN{
    srand() # seed by time
    srand(seed+srand()) # allow additional external seed
}
{ lines[++d]=$0 }
END{
    while (d > 0) {
	if (e==d) {break}
	r = int(1 + rand() * d)
	print lines[r]
	lines[r] = lines[d]
	delete lines[d]
	--d
    }
}