bitutils
This is a collection of scripts which make working with binary numbers a bit easier.
bin
converts its argument (or standard input) to binary.hex
converts its argument (or standard input) to hexadecimal.bitrule
displays a ruler below its standard input.
Example
shellsession
$ bin 12345 | bitrule
0b11000000111001
'|'''|'''|'''|
12 8 4 0