Tiny Bash Functions to Convert Between Numeric Representations

I have these functions in my aliases file. They make it easy to convert between hex, binary and decimal representations of numbers. You might find it useful.

Just add these to your aliases file (imported from ~/.bashrc):

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function h2d { echo "obase=10; ibase=16; $( echo "$*" | sed -e 's/0x//g' -e 's/$[a-z]$/\u\1/g' )" | bc; }
function h2b { echo "obase=2; ibase=16; $( echo "$*" | sed -e 's/0x//g' -e 's/$[a-z]$/\u\1/g' )" | bc; }
function b2d { echo "obase=10; ibase=2; "$*"" | bc; }
function b2h { echo "0x$(echo "obase=16; ibase=2;"$*"" | bc)"; }
function d2b { echo "obase=2; ibase=10; "$*"" | bc; }
function d2h { echo "0x$(echo "obase=16; ibase=10; "$*"" | bc)"; }

Now you should be able to use it like this:

h2d 0xff

The output will be 255 in this case.

h2b is for “hex to binary”, the others are similar (h: hex, b: binary, d: decimal)

Enjoy

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Tags: Bash, Command Line Interface, Tools

Friday, June 12th, 2009 Bash

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My name is Amir Watad. I have a BSc. in biomedical engineering from The Biomedical Engineering school , Technion , Israel, and am currently studying for a BSc. in electrical engineering at The Electrical Engineering school , Technion , Israel.
I work at the verification dept. in Mellanox Technologies Ltd.
I love Linux, the Command Line and the OpenSource Community.
I used to write Poems (Arabic) when I was able to find time for this.

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