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

xd() {
    printf "hex> "
    while read i
    do
        printf "dec  $(( 0x${i} ))\n\nhex> "
    done
}
dx() {
    printf "dec> "
    while read i
    do
        printf 'hex  %x\n\ndec> ' $i
    done
}