PIPE/REDIRECT TEST:
openssl rsautl -verify -inkey pub.pem -pubin -raw -hexdump < test.txt
Loading 'screen' into random state - done
0000 - 7c de b4 59 3c 4a 53 e6-83 d2 59 dc 12 b8 84 f8   |..Y<JS...Y.....
0010 - 31 02 51 0c 27 eb 30 5a-b9 18 c4 3d b0 fc bf 55   1.Q.'.0Z...=...U
0020 - 04 02 7d 73 2b 75 8a bd-95 3a b4 d1 ea 89 fb c5   ..}s+u...:......
0030 - 26 75 ec dd dc 02 47 70-3c 22 17 89 2d 56 2b 0c   &u....Gp<"..-V+.
0040 - 83 15 ad 3c 81 b0 c0 99-17 d5 2f 5d 69 5e 71 2c   ...<....../]i^q,
0050 - 09 ee c3 b5 8d ef 6c 3c-76 e3 3b 03 c6 11 ad 60   ......l<v.;....`
0060 - e6 a9 ae 17 53 ea f7 0e-4e 0a 0a c6 d2 43 6d 5b   ....S...N....Cm[
0070 - ed f5 3b 58 ff 65 a6 08-38 64 93 0f a7 24 66 6b   ..;X.e..8d...$fk
0080 - 0f cb db a1 ea e2 c5 b7-ec 49 e6 b3 b3 18 ae 8b   .........I......
0090 - 17 33 ab 9e 79 13 44 b1-9d 7f 55 06 16 05 63 b3   .3..y.D...U...c.
00a0 - 70 4a a5 e3 81 5e 9e 08-43 6e 3c 0d 05 c8 23 c2   pJ...^..Cn<...#.
00b0 - 63 26 9a f7 6c 0c c7 6c-97 f0 07 bf 48 4e ed ec   c&..l..l....HN..
00c0 - c8 12 b1 6a a1 c6 c2 b0-cc e9 d0 68 18 0f 07 ab   ...j.......h....
00d0 - 1e d5 b6 25 ec da 53 85-18 78 7b 55 1a a5 76 fd   ...%..S..x{U..v.
00e0 - 56 67 d1 22 33 61 c9 98-80 37 4c 16 2d 36 da ee   Vg."3a...7L.-6..
00f0 - 93 f9 17 16 c4 33 12 fb-2d 1a e5 61 03 07 2f be   .....3..-..a../.

FILE TEST:
openssl rsautl -verify -inkey pub.pem -pubin -raw -hexdump -in test.txt
Loading 'screen' into random state - done
0000 - 00 01 ff ff ff ff ff ff-ff ff ff ff ff ff ff ff   ................
0010 - ff ff ff ff ff ff ff ff-ff ff ff ff ff ff ff ff   ................
0020 - ff ff ff ff ff ff ff ff-ff ff ff ff ff ff ff ff   ................
0030 - ff ff ff ff ff ff ff ff-ff ff ff ff ff ff ff ff   ................
0040 - ff ff ff ff ff ff ff ff-ff ff ff ff ff ff ff ff   ................
0050 - ff ff ff ff ff ff ff ff-ff ff ff ff ff ff ff ff   ................
0060 - ff ff ff ff ff ff ff ff-ff ff ff ff ff ff ff ff   ................
0070 - ff ff ff ff ff ff ff ff-ff ff ff ff ff ff ff ff   ................
0080 - ff ff ff ff ff ff ff ff-ff ff ff ff ff ff ff ff   ................
0090 - ff ff ff ff ff ff ff ff-ff ff ff ff ff ff ff ff   ................
00a0 - ff ff ff ff ff ff ff ff-ff ff ff ff ff ff ff ff   ................
00b0 - ff ff ff ff ff ff ff ff-ff ff ff ff ff ff ff ff   ................
00c0 - ff ff ff ff ff ff ff 00-31 3a 41 6c 69 65 6e 2e   ........1:Change
00d0 - 31 39 37 39 2e 57 53 2e-44 56 44 52 69 70 2e 58   d.for.privacy.co
00e0 - 76 69 44 2e 69 4e 54 2d-45 77 44 70 3a 67 72 70   cerns.lalala:grp
00f0 - 2e 72 65 71 5f 67 65 74-2e 72 65 70 61 63 6b 0a   .req_get.repack.