Change root password from shell-script

[Jordi Espasa Clofent]

HI all,

?Is there any way t change the root password using a shell-script (aka
non-interactive mod as passwd uses)?

I've used pw in FreeBSD and chpasswd in Debian GNU/Linux to do it, bit
I've not found a way/command to do it with my OpenBSD boxes.

At present my approach will be install except from ports and use it to
get my goal.

[Gregory Edigarov]

On Wed, 27 Jan 2010 17:05:17 +0100

Post by Jordi Espasa Clofent
HI all,
?Is there any way t change the root password using a shell-script
(aka non-interactive mod as passwd uses)?
I've used pw in FreeBSD and chpasswd in Debian GNU/Linux to do it,
bit I've not found a way/command to do it with my OpenBSD boxes.
At present my approach will be install except from ports and use it
to get my goal.

Have you looked at man usermod? -p flag in particular.

[Jordi Espasa Clofent]

Post by Gregory Edigarov
Have you looked at man usermod? -p flag in particular.

Shame on me, indeed. It has been a game:

#!/bin/sh
PASSWORD=$(echo "my_new_password" | encrypt -b 6)
usermod -p $PASSWORD root

Thanks.

[Paul Branston]

Post by Jordi Espasa Clofent

Post by Gregory Edigarov
Have you looked at man usermod? -p flag in particular.

#!/bin/sh
PASSWORD=$(echo "my_new_password" | encrypt -b 6)
usermod -p $PASSWORD root

A little more generic in case there is no usermod -p

PASSWORD=$(echo "my_new_password" | encrypt -b 6)
perl -p -i.bk -e 's/^root:.*?:/root:$PASSWORD:/' /etc/shadow

[Brynet]

Post by Paul Branston
A little more generic in case there is no usermod -p
PASSWORD=$(echo "my_new_password" | encrypt -b 6)
perl -p -i.bk -e 's/^root:.*?:/root:$PASSWORD:/' /etc/shadow

Wow,

Question: are you even using OpenBSD?

-Bryan.

[Chris Dukes]

Post by Paul Branston

Post by Jordi Espasa Clofent

Post by Gregory Edigarov
Have you looked at man usermod? -p flag in particular.

#!/bin/sh
PASSWORD=$(echo "my_new_password" | encrypt -b 6)
usermod -p $PASSWORD root

A little more generic in case there is no usermod -p
PASSWORD=$(echo "my_new_password" | encrypt -b 6)
perl -p -i.bk -e 's/^root:.*?:/root:$PASSWORD:/' /etc/shadow

Breaks on AIX :-). Breaks with NIS and LDAP as well :-).

I've always had the pipe dream of there being a chpasswd(8)
on *BSD like there is on current AIX and Linux distros.
But usually there isn't that much headache using something like usermod.

[Julian Leyh]

Post by Paul Branston
A little more generic in case there is no usermod -p
PASSWORD=$(echo "my_new_password" | encrypt -b 6)
perl -p -i.bk -e 's/^root:.*?:/root:$PASSWORD:/' /etc/shadow

/etc/shadow: no such file