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Home/ Questions/Q 7567023
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Editorial Team
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Editorial Team
Asked: May 30, 20262026-05-30T14:33:37+00:00 2026-05-30T14:33:37+00:00

I need to pass binary data to a bash program that accepts command line

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I need to pass binary data to a bash program that accepts command line arguments. Is there a way to do this?

It’s a program that accepts one argument:

script arg1

But instead of the string arg1, I’d like to pass some bytes that aren’t good ASCII characters – in particular, the bytes 0x02, 0xc5 and 0xd8.

How do I do this?

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  1. Editorial Team
    Editorial Team
    2026-05-30T14:33:38+00:00Added an answer on May 30, 2026 at 2:33 pm
    script "`printf "\x02\xc5\xd8"`"
    script "`echo -e "\x02\xc5\xd8"`"
    

    test:

    # echo -n "`echo -e "\x02\xc5\xd8"`" | hexdump -C
    00000000  02 c5 d8                                          |...|
    
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