Not sure that's really right either... maybe it corrects the error for
you though.

The easiest way to make a proper crypted password is either to use
usermod, passwd, as normal and then copy from /etc/shadow, or use mkpasswd.

Here's a proper example with salt and a proper algorithm:
# mkpasswd -m SHA-256 -s <<< "hi"
$5$aiIZoKuCb81Ki$tBcSFQfyetVkJ03TXX5ftw/XJD27Qt5pTABGz7gdUM/

Here is the obsolete insecure md5 algorithm as you have used before. You
can see here the "$1$..." means it is md5, and is the proper way to
format it unlike in the simple output you have with ".... | md5sum" used.
# mkpasswd -m md5 -s <<< "hi"
$1$SFSi8luS$jzco491ys2fylaH8ILLpC.

See man 3 crypt for the details on the format and what it all means.

To install mkpasswd, install the "whois" package.

On 10/23/2015 09:38 PM, aitor_czr wrote:
> Yes... you are right, Klaus.
>
> El 23/10/15 09:20, Klaus Hartnegg <hartnegg@???> escribió:
>> Maybe you need instead this
>>
>> echo -n "XXXXXX" | md5sum
>> c0a7ae7d513f4beb2bc203d6f339f1b5 -
>