Create User Script

createuser.sh

#!/bin/bash
# This script creates a user account under Mac OS X
usage() {
  echo "  Synopsis"
  echo '    create-user userName userFullName userPassword groupId'
  echo ""
  echo ""
  echo "  Description"
  echo "   Creates a new user with the given params and attributes to the desired group"
}

UName=$1
FullName=$2
Password=$3
GroupId=$4

if [[ $UID -ne 0 ]]; then echo "Please run $0 as root." && exit 1; fi


if [ $# -lt 4 ]; then
  echo "Wrong arguments supplied!"
  usage
  exit 2
fi

# Find out the next available user ID
MAXID=$(dscl . -list /Users UniqueID | awk '{print $2}' | sort -ug | tail -1)
UserId=$((MAXID+1))

# Create the user account
echo "Creating user $UName"
dscl . -create /Users/"$UName"
echo "Setting default shell to /bin/bash"
dscl . -create /Users/"$UName" UserShell /bin/bash
echo "Setting RealName as $FullName"
dscl . -create /Users/"$UName" RealName "$FullName"
echo "Setting UniqueId as $UserId"
dscl . -create /Users/"$UName" UniqueID "$UserId"
echo "Setting PrimaryGroupID as $GroupId"
dscl . -create /Users/"$UName" PrimaryGroupID "$GroupId"
echo "Creating home directory /Users/$UName"
dscl . -create /Users/"$UName" NFSHomeDirectory /Users/"$UName"
createhomedir -c -u "$UName"

echo "Defining user password"
dscl . -passwd /Users/"$UName" "$Password"
if [ $? != 0 ] ; then
  echo "Reverting user creation. Deleting user /Users/$UName"
  dscl . delete /Users/"$UName"
  exit 1
fi

echo ""
echo "Created user #$UserId: $UName ($FullName)"