They wanted you to write a program that reads a file and displays the content in the shown format. The general format quite common and useful for inspecting non-text files.

Each row represents 16 bytes of the file.
The 1st column is the offset within the file, in hex.
The 2nd, 3rd, 4th and 5th column each represent 4 bytes of the file, in hex.
The last column is the ASCII representation of the same 16 bytes. Nonprintable characters are shown as ..

Update: A solution: 

00000000: 75736520 73747269 63743B0D 0A757365 use strict;..use
00000010: 20776172 6E696E67 733B0D0A 0D0A6C6F  warnings;....lo
00000020: 63616C20 242F203D 205C3136 3B0D0A62 cal $/ = \16;..b
00000030: 696E6D6F 64652853 5444494E 293B0D0A inmode(STDIN);..
00000040: 0D0A6D79 20246F66 66736574 203D2030 ..my $offset = 0
00000050: 3B0D0A0D 0A776869 6C652028 3C535444 ;....while (<STD
00000060: 494E3E29 207B0D0A 2020206D 79202462 IN>) {..   my $b
00000070: 79746573 203D2024 5F3B0D0A 20202024 ytes = $_;..   $
00000080: 62797465 73203D7E 20732F28 2E292F73 bytes =~ s/(.)/s
00000090: 7072696E 74662827 25303258 272C206F printf('%02X', o
000000A0: 72642824 3129292F 7365673B 0D0A2020 rd($1))/seg;..
000000B0: 20246279 74657320 3D206A6F 696E2027  $bytes = join '
000000C0: 20272C20 6D617020 2F2E7B31 2C387D2F  ', map /.{1,8}/
000000D0: 672C2024 62797465 733B0D0A 0D0A2020 g, $bytes;....
000000E0: 206D7920 24636861 7273203D 20245F3B  my $chars = $_;
000000F0: 0D0A2020 20246368 61727320 3D7E2073 ..   $chars =~ s
00000100: 2F5B5E5B 3A707269 6E743A5D 5D2F2E2F /[^[:print:]]/./
00000110: 673B0D0A 0D0A2020 20707269 6E746628 g;....   printf(
00000120: 22253038 583A2025 2D333573 2025735C "%08X: %-35s %s\
00000130: 6E222C20 246F6666 7365742C 20246279 n", $offset, $by
00000140: 7465732C 20246368 61727329 3B0D0A0D tes, $chars);...
00000150: 0A202020 246F6666 73657420 2B3D2031 .   $offset += 1
00000160: 363B0D0A 7D0D0A                     6;..}..

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In reply to Re: What is this question asking? by ikegami
in thread What is this question asking? by Herkum

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