Grep Hex Colour Codes from file

grephexcolourcode

#!/bin/bash
#get hex codes in form #fff and #ffffff

#checks to see if not - especially needed on #fff matches
#FIXME: - currently prints trailing character
if [[ ! -a $1 ]]; then
	echo File not found
	exit 1
fi
sed ':a;N;$!ba;s/\n/ /g' "$1" | grep -o '\#[0-9a-fA-F]\{3\}[^0-9a-fA-F]' | sed 's/[^0-9a-fA-F#]//g' | sort -u
sed ':a;N;$!ba;s/\n/ /g' "$1" | grep -o '\#[0-9a-fA-F]\{6\}[^0-9a-fA-F]' | sed 's/[^0-9a-fA-F#]//g' | sort -u
exit