I am trying to append a non printable character (FileSeparator/FS/0x1c) onto an ascii string and then inspect the contents of the string for debugging purposes. I think I am screwed up on the "how to inspect the contents of an ASCII string in hex) side. 

my $string = pack('a*','123456');
foreach (my $i=0; $i<length($string); $i++) { printf("%02x ", substr($
+string,$i,1)); }
print "\n";

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the result is: 01 02 03 04 05 06 the expectation was: 31 32 33 34 35 36 continuing, let's add the FS character to the string: 
$string .= pack('a', 0x1c);
foreach (my $i=0; $i<length($string); $i++) { printf("%02x ", substr($
+string,$i,1)); }
print "\n";

[download]
the result is: 01 02 03 04 05 06 02 the expectation was: 31 32 33 34 35 36 1c (Further explanation: this is for use with serial communications of for sending into sockets) Thanks!!

In reply to concatenate a non-printable character onto an ascii string and inspect the content by holandes777

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