Solved Bash with echo convert word to bin, hex and oct?

[blumenwesen]

conversion:
word="hello world"

to binary:
results="01101000 01100101 01101100 01101100 01101111 00100000 01110111 01101111 01110010 01101100 01100100"

to hexadecimal:
results="0x68 0x65 0x6c 0x6c 0x6f 0x20 0x77 0x6f 0x72 0x6c 0x64"

to octal:
results="150 145 154 154 157 40 167 157 162 154 144"

example code:

str="hello world"
for ((z=0; z<${#str}; z+=2))
    do
        echo -e "%s"$((${str:$z:1}&1))) # BIN
        echo -e "%02x"${str:$z:2}  # HEX
        echo -e "%3o"${str:$z:2} # OCT
done

Thanks for help

 

[blumenwesen]

ok, if it doesn't work with echo and sed or awk, does anyone know how it works with printf?

I have searched in the net but found no way encrypt word to binary and decrypt back.

I know python is the easiest way, but in last time so many libraries have been changed and 2.7 was before always more sympathetic for me.

 

[covacat]

if you can do hex binary is easy
just sed 4 bits to one hex digit and viceversa
or

#!/bin/sh
b2h()
{
case $1 in
 "0000") echo 0;;
 "0001") echo 1;;
 "0010") echo 2;;
 "0011") echo 3;;
 "0100") echo 4;;
 "0101") echo 5;;
 "0110") echo 6;;
 "0111") echo 7;;
 "1000") echo 8;;
 "1001") echo 9;;
 "1010") echo A;;
 "1011") echo B;;
 "1100") echo C;;
 "1101") echo D;;
 "1110") echo E;;
 "1111") echo F;;
esac;
}
results="01101000 01100101 01101100 01101100 01101111 00100000 01110111 01101111 01110010 01101100 01100100"
for byte in $results
do
l=${byte#????}
h=${byte%????}
eval hh=$(b2h $h)
eval hl=$(b2h $l)
echo -n "0x$hh$hl "
done
echo

 

[blumenwesen]

ok thanks, and can I convert a letter not with echo?

printf "%02x" \'"yz"
echo -e "%02x" \'"yz"

 

[covacat]

#!/usr/local/bin/bash
charCode()
{
local i j c
[ "$1" = "'" ] && echo 0x27 && return
for i in  1 2 3 4 5 6 7 8
 do
 for j in 0 1 2 3 4 5 6 7 8 9 a b c d e f
  do
   [ "$i$j" == 27 ] && continue
   eval c=\'$(echo -e \\x$i$j)\'
   [ "$c" = "$1" ] && echo 0x$i$j && return
  done
 done
}

charCode A
charCode c
charCode @
charCode "'"
charCode '"'

you can make a faster one using binary search not linear like this

 

[blumenwesen]

Wow this is a nice solution, thank you very much.

 

[blumenwesen]

I tried to convert numbers also but don't know how to change the script.