Unix outputting hex / raw integers

It's often useful to output something as a hex or raw value

This command comes in handy:

# od -cb

Examples:

# echo "abc" | od -cb

This results in:
0000000    a   b   c  \n
          141 142 143 012
0000004


In the following, ./a.out is an executable in the same directory.

# od ./a.out -cb | head

# od ./a.out

# od -b ./a.out