$ curl cheat.sh/
 cheat:od 
# To dump a file in octal format:
od <binary-file>
od -o <binary-file>
od -t o2 <binary-file>

# To dump a file in hexadecimal format:
od -x <binary-file>
od -t x2 <binary-file>

# To dump a file in hexadecimal format, with hexadecimal offsets and a space between each byte:
od -A x -t x1 <binary-file>

 tldr:od 
# od
# Display file contents in octal, decimal or hexadecimal format.
# Optionally display the byte offsets and/or printable representation for each line.
# More information: <https://www.gnu.org/software/coreutils/od>.

# Display file using default settings: octal format, 8 bytes per line, byte offsets in octal, and duplicate lines replaced with `*`:
od path/to/file

# Display file in verbose mode, i.e. without replacing duplicate lines with `*`:
od -v path/to/file

# Display file in hexadecimal format (2-byte units), with byte offsets in decimal format:
od --format=x --address-radix=d -v path/to/file

# Display file in hexadecimal format (1-byte units), and 4 bytes per line:
od --format=x1 --width=4 -v path/to/file

# Display file in hexadecimal format along with its character representation, and do not print byte offsets:
od --format=xz --address-radix=n -v path/to/file

# Read only 100 bytes of a file starting from the 500th byte:
od --read-bytes 100 --skip-bytes=500 -v path/to/file

$
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