Bash : echo binary output

Question

for a script i must create a file and add a line (only numeric) to this. But this should be in binary mode, but I havent found a solution.

My actually commands:

SIZE=200
touch quota
echo $SIZE >> quota

How can do this in binary mode?

That still means bupkis given that echo is generally for text. — Ignacio Vazquez-Abrams
– Ignacio Vazquez-Abrams, Commented Aug 7, 2013 at 11:43
I guess its a duplicate : stackoverflow.com/questions/9955020/… — blackSmith
– blackSmith, Commented Aug 7, 2013 at 11:51

konsolebox · Accepted Answer · 2013-08-07 11:42:07Z

1

Perhaps you need to use the -n option?

echo -n "$SIZE" >> quota

Or maybe you need the binary representation it but this is only limited to 8 bits or 255.

echo -ne "$(printf '\\x%x' 200)" >> quota

Also make sure that you really need to use >> and not > as >> appends data to existing files, not overwrite it.

answered Aug 7, 2013 at 11:42

konsolebox

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