= Convert hexadecimal dump to binary =
The command '''xxd''' with the '''-r''' option can do that.

Sample usage:
{{{#!highlight sh
nano test.hex #fill it with 41 41 41 42 31 31 33 0D 0A and save
xxd -r -p test.hex | hexdump -C # to view the conversion
xxd -r -p test.hex test.bin # store the conversion
}}}