From mboxrd@z Thu Jan  1 00:00:00 1970
From: Krzysztof Dubowik <kite@interia.pl>
Subject: Re: Change password with usermod
Date: Sat, 10 Mar 2007 12:55:01 +0100
Message-ID: <esu6am$4rg$1@sea.gmane.org>
References: <45F28B94.5020800@gmail.com>
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Hi,

M=C3=A1rio Gamito wrote:
> PASS=3D`mkpasswd secret`
> ID=3D`cat /etc/passwd | grep postgres | cut -f3 -d':'`
> usermod -p $PASS -u $ID
>=20
> This gives me:
> "usermod: user 502 does not exist"

usermod needs a login name rather than the userid and you don't need -u
option:

# usermod -p $PASS postgres

However, I usually user chpasswd to change the password from a script, =
so
your script becomes:

# echo postgres:secret | chpasswd

Hope this helps,
Krzysztof

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