github.com/benhoyt/goawk@v1.8.1/testdata/t.in (about)

     1  BEGIN {
     2  	x["apple"] = 1;
     3  	x["orange"] = 2;
     4  	x["lemon"] = 3;
     5  	for (i in x)
     6  		print i, x[i] | "sort"
     7  	close("sort")
     8  	exit
     9  }