Help with addgroup and adduser

[Jeff Mutonho]

I'm trying to configure open-xchange and the instructions (at
http://wiki.open-xchange.com/wiki/index.php?title=Open_Xchange_Installation)
say I should do the following :

& addgroup --system open-xchange
& adduser --system --home /opt/open-xchange --no-create-home
--disabled-password --ingroup open-xchange open-xchange
& chmod 750 /var/log/open-xchange
& chown open-xchange: /var/log/open-xchange

What I did is :
# groupadd -r open-xchange

#useradd -r -d /opt/open-xchange/ -M -g open-xchange  -----> FAILED

with usage message "Usage: useradd [options] LOGIN"

What am I missing?


"Don't take the name of root in vain."

Jeff  Mutonho
Cape Town
South Africa

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