password-test.sh

# lets create a password first:

chrisadams@brie[~]
[1:11]:openssl passwd -1 fred
$1$/1w0JaZM$IaBQcL34WrpY0MTGB2wYq/
$1$/1w0J..........................

# and now, if we select the first 8 characters (our salt, $1$/1w0J) 
# we should be able to recombine it with the the password to 
# get back our initial hash:

chrisadams@brie[~]
[1:11]:openssl passwd -1 -salt $1$/1w0J fred

$1$$/1w0J$HGg4kh9PkoPWxIHJcc05V/

# ....
1st hash: $1$/1w0JaZM$IaBQcL34WrpY0MTGB2wYq/
2nd hash: $1$$/1w0J$HGg4kh9PkoPWxIHJcc05V/

# D'oh!