an alias to execut ls -lah with colour, and create octal permissions output

ll alias.sh

function ll() {
	if [ "$*" == "" ]
	then
		input=./
	else
		input=$*
	fi
	
    ls "$input" -lah --color | awk '{
		k = 0
		s = 0
		for( i = 0; i <= 8; i++ )
		{
				k += ( ( substr( $1, i+2, 1 ) ~ /[rwxst]/ ) * 2 ^( 8 - i ) )
		}
		j = 4
		for( i = 4; i <= 10; i += 3 )
		{
				s += ( ( substr( $1, i, 1 ) ~ /[stST]/ ) * j )
				j/=2
		}
		if ( k )
		{
				printf( "%0o%0o ", s, k )
		}
		print
    }'
}