[SOLVED] [Bash] command output as variable (in GRUB)

[lladlu]

Hello everybody.

I'm trying to make a bash script, that allows me to:
- Start grub-md5-crypt
- Enter a password
- Add the md5-value for that password to /boot/grub/menu.lst automatically

My problem is, that grub-md5-crypt is kinda weird, and gives an output like this:

$ grub-md5-crypt
  Password: (requires user action)
  Retype password: (requires user action)
  [md5-sum]

I would like to just copy the md5-sum, and add it to my menu.lst.

Does anybody know, how to do that? I was thinking about using grep, but haven't had any success yet.
I've noticed, that all md5-sums created by that command starts with $1$, if that should be any help.

[lladlu]

Okay, I figured it out myself:
Using var=$(openssl passwd -1) instead of var=$(grub-md5-crypt) I finally got it to work.

To help others, here's my script to make and add a MD5-encrypted password to /boot/grub/menu.lst:

##!/bin/bash
grub=/boot/grub/menu.lst
var=$(openssl passwd -1)
echo password --md5 $var >> $grub

Executing the above script in a console will work.