BASH - Convert textfile containing binary numbers into a binary file

Question

I have a long text file that looks something like this:

00000000
00001110
00010001
00010000
00001110
00000001
00010001
00001110
...and so on...

I'd like to take this data that is represented in ASCII and write it to a binary file. That is, i do NOT want to convert ASCII to binary, but rather take the actual 1s and 0s and put them in a binary file The purpose of this is so that my EPROM programmer can read the file. I've heard that ob and hexdump are useful in this case but I never really understood how they worked.

If it's to any help I also have the data in hex form:

00 0E 11 10 0E 01 11 0E

How do I do this using a shell script?

I think you need to use a language like perl or PHP. I can't think of a way to generate binary data in pure bash. — Barmar
– Barmar, Commented Aug 28, 2014 at 23:41

William Pursell · Accepted Answer · 2014-08-29 00:19:31Z

1

Something like perl -ne 'print pack "B*", $_' input should get you most of the way there.

answered Aug 29, 2014 at 0:19

William Pursell

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1 Comment

DarkVio Over a year ago

This is perfect! Thanks! cat file.text | tr -d "\n" | perl -ne 'print pack "B*", $_' > file.bin

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