On May 4, 2015, at 5:07 PM, Eric Smith <spacewar at gmail.com> wrote: With python 2.7 installed, the following program, which I call hex2oct.py, will do it: #!/usr/bin/python2 # Copyright 2015 Eric Smith <spacewar at gmail.com> # Released under Creative Commons BY-SA 4.0 International Public License # https://creativecommons.org/licenses/by-sa/4.0/legalcode import fileinput,re,sys r = re.compile('[0-9A-F]+', re.I) for line in fileinput.input(): while len(line): m = r.search(line) if m: sys.stdout.write(line[:m.start()]) sys.stdout.write("%03o" % int(m.group(),16)) line = line[m.end():] else: sys.stdout.write(line) line = '' Just put that in a file and chmod it to be executable. Change the path in the first line to the location of your python executable. (Alternatively, put "python" or the full path to the python executable on the command line before then name of this program.) By default It takes data from standard input, or you can specify one or more filenames on the command line to be processed sequentially. From standard input, enter as many lines of input as you like, then an end-of-file (control-D on Unix and derivatives, control-Z on Windows, though I haven't tested it on Windows). Exit by an empty line with an end-of-file. Any non-hexadecimal data before, between, or after hexadecimal numbers is preserved, so you can have commas, tabs, etc. in the input and get them back in the output. Hexadecimal values larger than FF will likely yield undesired results. The program could be easily modified to ignore them, complain about them, or automatically split up sequences of more than 2 hex digits.

On May 4, 2015, at 5:58 PM, Don North <north at alum.mit.edu> wrote: On 5/3/2015 9:31 PM, Philip Lord wrote: Here is a perl one-liner that does what you want: perl -n -e 'print join(" ",map(sprintf("%03o",hex($_)),split(" ")))."\n";' Example: ~[514] perl -n -e 'print join(" ",map(sprintf("%03o",hex($_)),split(" ")))."\n";' 1 2 3 de ad be 001 002 003 336 255 276 I typed the red line as input data, the program output the blue line. You can also use standard unix file indirection or piping as well on the program line. Don

On May 4, 2015, at 7:54 PM, Don North <north at alum.mit.edu> wrote: On 5/4/2015 12:23 AM, Philip Lord wrote: There are two ways to resolve this. First, you just put the command line I gave you into a shell script file (call it conv.sh): #!/bin/bash perl -n -e 'print join(" ",map(sprintf("%03o",hex($_)),split(" ")))."\n";' Then just type './conv.sh' on the command line to run in interactive mode, or './conv.sh < test.dat' to source data from a file test.dat. Or, second, to turn the perl one-liner into a real perl program, it needs to be this (call it conv.pl): #!/usr/bin/perl while (<>) { print join(" ",map(sprintf("%03o",hex($_)),split(" ")))."\n"; } exit; then you can run this in the same way as above, except type './conv.pl' or './conv.pl < test.dat' Don

On May 5, 2015, at 2:07 PM, Ian S. King <isking at uw.edu> wrote: But now he has Perl on his computer. Eww. On Mon, May 4, 2015 at 1:12 AM, Philip Lord <philip at neoncluster.com> wrote: -- Ian S. King, MSIS, MSCS, Ph.D. Candidate The Information School <http://ischool.uw.edu> Archivist, Voices From the Rwanda Tribunal <http://tribunalvoices.org> Value Sensitive Design Research Lab <http://vsdesign.org> University of Washington There is an old Vulcan saying: "Only Nixon could go to China."

Perl is teh awsome!