Convert decimal to hexadecimal in UNIX shell script

Question

In a UNIX shell script, what can I use to convert decimal numbers into hexadecimal? I thought od would do the trick, but it\'s not realizing I\'m feeding it ASCII represent

Answer 1

bash-4.2$ printf '%x\n' 4294967295
ffffffff

bash-4.2$ printf -v hex '%x' 4294967295
bash-4.2$ echo $hex
ffffffff