tor-parallel-relay-conn/contrib/osx/addsysuser

#!/bin/sh
#
# Original adduser 05 Feb 2002 by Jon L. Gardner
#
# Modified for Tor installer by Nick Mathewson

if [ "`whoami`" != "root" ]; then
echo "You must be root to execute this script."
exit
fi
if [ "x$3" = "x" ]; then
echo 'Usage: addsysuser <username> "<full name>" <homedir>'
exit 0
fi
username=$1
realname=$2
homedir=$3
# GID 20 is "staff" which is the default. Change it if you want.
gid=`niutil -readprop / /groups/daemon gid`
if [ "x`niutil -list / /users|cut -f2 -d' '|grep $username`" != "x" ]; then
echo The account $username already exists.
exit 0
fi
# home is the local path to the home directory
home=/Users/$username
# defhome is what goes into NetInfo
defhome="/Network/Servers/MyServer/Users"
#echo "Determining next available system uid (please be patient)..."
# Uids over 500 are for system users.
uiddef=`nidump passwd / | cut -d: -f3 | sort -n | grep -v '^[56789]..' |grep -v '^....$' | tail -n 1`
uiddef=`echo $uiddef + 1 |bc`
echo Creating account for $username...
niutil -create / /users/$username
niutil -createprop / /users/$username _writers_tim_passwd $username
niutil -createprop / /users/$username realname $realname
niutil -createprop / /users/$username _writers_passwd $username
niutil -createprop / /users/$username uid $uiddef
#niutil -createprop / /users/$username home_loc "<home_dir><url>afp://afp.server.com/Users/</url><path>$username</path></home_dir>"
niutil -createprop / /users/$username gid $gid
niutil -createprop / /users/$username home $homedir
niutil -createprop / /users/$username name $username
niutil -createprop / /users/$username passwd '*'
niutil -createprop / /users/$username shell /dev/null