Shell Programming and Scripting

echo "ibase=16;obase=2;AF6D"|bc

echo "AF6D" | perl -ne 'printf "%016b\n", hex($_)'

echo "ibase=16 ; obase=2 ; AF6D" | bc

echo "AF6D" | awk 'BEGIN {
	FS=""
	a["f"]="1111"
	a["e"]="1110"
	a["d"]="1101"
	a["c"]="1100"
	a["b"]="1011"
	a["a"]="1010"
	a["9"]="1001"
	a["8"]="1000"
	a["7"]="0111"
	a["6"]="0110"
	a["5"]="0101"
	a["4"]="0100"
	a["3"]="0011"
	a["2"]="0010"
	a["1"]="0001"
	a["0"]="0000"
	}
	{
	for (i=1;i<=NF;i++) printf a[tolower($i)]
	print ""
	}'
1010111101101101

echo "AF6D" | awk --non-decimal-data ' {
for(i=lshift(1,15);i;i=rshift(i,1))
printf "%d%s", (and(("0x"$1)+0,i) > 0), ++c%4==0?" ":"";
printf"\n"; }'
1010 1111 0110 1101

echo "ibase=16 ; obase=2 ; AF6D" | bc

typeset -Z16 binval=`echo "ibase=16 ; obase=2 ; 7F6D" | bc`
echo $binval

VALUE=$((0xAF6D))
BITS=32
for ((i=BITS-1;i>=0;i--)); do printf "%d" $(( (VALUE>>i)%2 )); done; printf "\n"
00000000000000001010111101101101