Use this script to import users into an Open Directory domain on OS X Mavericks Server with users in a CSV. The Users.csv file is an example file to show you the structure expected.

import_users.sh

#!/bin/bash

#	Import Users into an Open Directory Domain
#	by Dan Barrett
#	http://yesdevnull.net

#	You may need to change the details below depending on your configuration
#	and settings

#	Arguments:
#	* 	Path to the CSV

#	CSV format should be:
#	+------------+---------+------------+----------+
#	| First Name | Surname | Student ID | Password |
#	+------------+---------+------------+----------+

#	Note: You must ensure that the line endings for the CSV are Unix (or CRLF)
#	and you have an empty line on the last line

#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*

#	This will work if you're running it on the Directory Service Domain, change
#	it if you're running the script on another bound machine
directoryDomain="/LDAPv3/127.0.0.1"
#	Username of a directory administrator
directoryUsername="masterdiradmin"
#	Password for the above directory administrator
directoryPassword="masterpass"

#	Username for an administrator of the server ( aka Local Domain or . )
#	(for local groups like com.apple.access_radius)
serverUsername="serveradmin"
#	Password for the above server administrator
serverPassword="serverpass"

#	Primary Group ID ("Open Directory Users" group on OS X Server is 20)
primaryGroupID="20"
#	NFS Home Directory (leave this as /dev/null if the users are services only)
nfsHomeDirectory="/dev/null"
#	Shell path for the user
userShell="/usr/bin/false"
#	Domain for the email address (e.g. pretendco.com, apple.com)
emailDomain="pretendco.com"

#	List of local groups to add the user to (separate each group with a space)
localGroups=( com.apple.access_radius com.apple.access_afp com.apple.access_addressbook )
#	List of network groups to add the user to (separate each group with a space)
networkGroups=( workgroup )

#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#
#*#*# Anything Below Here Should Not Be Changed #*#*#
#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#

#	This function will get the most recent UniqueID for the directory domain,
#	then increase by 1 for the next user to add
getLastID() {
	getUIDs=`dscl $directoryDomain -list /Users UniqueID`

	UIDArray=`echo -E "$getUIDs" | grep -E -o "[0-9]+$"`

	nextID=`echo "${UIDArray[*]}" | sort -nr | head -n1`

	nextID=$(( $nextID + 1 ))

	echo $nextID
}

#	Iterate through the CSV and obtain these variables
while IFS=, read importFirstName importLastName importID importPassword
	do
		#	Create the shortname from their name and student ID
		#	e.g. John Smith with Student ID of 1337 would be js1337
		#	e.g. Jim Halpert with Student ID of 27144 would be jh27144
		shortname=`echo "${importFirstName:0:1}${importLastName:0:1}$importID" | tr "[:upper:]" "[:lower:]"`

		#	DSCL Magic
		#	Go through and add all these details to the LDAP domain
		`dscl -u $directoryUsername -P $directoryPassword $directoryDomain -create /Users/$shortname`
		`dscl -u $directoryUsername -P $directoryPassword $directoryDomain -create /Users/$shortname UniqueID $( getLastID )`
		`dscl -u $directoryUsername -P $directoryPassword $directoryDomain -create /Users/$shortname FirstName $importFirstName`
		`dscl -u $directoryUsername -P $directoryPassword $directoryDomain -create /Users/$shortname LastName $importLastName`
		`dscl -u $directoryUsername -P $directoryPassword $directoryDomain -create /Users/$shortname RealName "$importFirstName $importLastName"`
		`dscl -u $directoryUsername -P $directoryPassword $directoryDomain -create /Users/$shortname EMailAddress "${shortname}@${emailDomain}"`
		`dscl -u $directoryUsername -P $directoryPassword $directoryDomain -create /Users/$shortname Comment "Student ID: $importID"`
		`dscl -u $directoryUsername -P $directoryPassword $directoryDomain -create /Users/$shortname Keywords "students"`
		`dscl -u $directoryUsername -P $directoryPassword $directoryDomain -create /Users/$shortname PrimaryGroupID 20`
		`dscl -u $directoryUsername -P $directoryPassword $directoryDomain -create /Users/$shortname UserShell $userShell`
		`dscl -u $directoryUsername -P $directoryPassword $directoryDomain -create /Users/$shortname NFSHomeDirectory $nfsHomeDirectory`
		`dscl -u $directoryUsername -P $directoryPassword $directoryDomain -passwd /Users/$shortname "$importPassword"`

		#	Iterate through each local group and add the user to that group
		for localGroup in "${localGroups[@]}"
		do
			`dseditgroup -o edit -u $serverUsername -P $serverPassword -a $shortname -t user $localGroup`
		done
		
		#	Iterate through each network group and add the user to that group
		for networkGroup in "${networkGroups[@]}"
		do
			`dseditgroup -o edit -u $directoryUsername -P $directoryPassword -n $directoryDomain -a $shortname -t user $networkGroup`
		done
		
		echo "`date "+%Y-%m-%d %H:%M:%S"`: Added $importFirstName $importLastName ($shortname) to $directoryDomain."
done < $1

Users.csv