awkで配列のカラムを消す時は delete ary[index] です 実際のところ BEGIN { PROCINFO["sorted_in"] = "@ind_str_asc" ary[3] = "j" ary[1] = "t" ary[2] = "a" ary[0] = "b" delete ary[2] for (i in ary) print i, ary[i] } #>> 0 b #>> 1 t #>> 3 j 参考…