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Hello All, I am a PERL newbie, and come from a hardware background. My question is with regards concatenating binary data in PERL. I am reading a 32-bit value (4 bytes) from a binary file. I would like to concatenate one bit in front of the value (new value will be 33 bits!) I have tried different variations of using pack, but either I don't think I understand pack command correctly, or B, PERL doesn't like my use of a 33 bit data. How should I fix this? Here is sample of what I am doing

open (PARSER_FILE, $inputfile) or die "Couldn't open $inputfile for reading"; binmode(PARSER_FILE); open (OUT_FILE, ">", $outputfile) or die "Couldn't open $outputfile for writing"; binmode(OUT_FILE); read(PARSER_FILE, $buff, 4) . . print OUT_FILE pack(b33, 1, $buff);

In reply to PERL Binary Data Handling by ashes3d

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