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+====== FreeIPA Report Host Groups Empty ======
+**General Information**
+Report Host Groups that don't have any members.
+**Checklist**
+  * Distro(s): Enterprise Linux 6/7
+  * Other: [[http://www.unixmen.com/configure-freeipa-server-centos-7/|FreeIPA Server Installed]] (script runs there)
+----
+====== The Script ======
+<code bash report-hostgroups-empty.sh>
+#!/bin/bash
+# Name: report-hostgroups-empty.sh
+# Description: Report Host Groups that don't have any members
+# Last Modified: 2018-05-31
+# Recent Changes:-Initial release
+###############################################################################################
+##### Customize These Variables #####
+# IPA admin user
+admin_user="admin"
+##### End of Customize Variables #####
+#=====================================
+# Functions; Main starts after
+#=====================================
+function show_usage
+{
+  echo -e "\n==== Report: Empty Host Groups ===="
+  echo -e "\nDescription: Report host groups that don't have any members."
+  echo -e "\n--Usage--"
+  echo -e "./report-hostgroups-empty.sh [OPTIONS]"
+  echo -e "\n-OPTIONS-"
+  echo -e "-h                    => Display usage."
+  echo -e "-v                    => Verbose; extra status output."
+  echo -e "\n--Other Requirements--"
+  echo -e "-> FreeIPA admin access."
+  echo -e
+}
+#=======================
+# Get Script Arguments
+#=======================
+# Reset POSIX variable in case it has been used previously in this shell
+OPTIND=1
+# By default, do not output verbose
+verbose_mode="no"
+while getopts "hv" opt; do
+  case "${opt}" in
+    h) # -h (help) argument
+      show_usage
+      exit 0
+    ;;
+    v) # -v (verbose) argument
+      verbose_mode="yes"
+    ;;
+    *) # invalid argument
+      show_usage
+      exit 0
+    ;;
+  esac
+done
+#===================
+# Pre-checks: Make sure we have good options set
+#===================
+# See if we have a kerberos ticket, if not, prompt login
+/usr/bin/klist -s
+if [[ $? -ne 0 ]]; then
+  echo ">>No kerberos ticket found for (${admin_user}), login as ${admin_user} now:"
+  /usr/bin/kinit ${admin_user}
+  echo
+fi
+#===================
+# Main starts here
+#===================
+echo -e "======================================================"
+echo -e "####========= Report: Empty Host Groups ==========####"
+echo -e "======================================================"
+echo
+echo -e "This script will report all host groups that don't have any members."
+if [[ ${verbose_mode} == "yes" ]]; then
+  echo -e "Verbose: Yes"
+else
+  echo -e "Verbose: No"
+fi
+echo -e "=>Continue?[y/n]:\c"
+read run_script
+if [[ ${run_script} != "y" ]]; then
+  echo -e "\n>>Will not run the script. Exiting..."
+  exit 1
+fi
+# Get all host groups
+echo -e ">> Getting all host groups."
+all_hostgroups="$(ipa hostgroup-find --sizelimit=0 | awk '/Host-group/ {print $2}')"
+# Initialize lists to nothing
+hostgroup_nomembers=""
+hostgroup_error=""
+echo -e ">> Checking ($(echo ${all_hostgroups} | wc -w)) hostgroups for members\c"
+if [[ ${verbose_mode} == "yes" ]]; then
+  # Extra newline required if verbose messages (due to \c above)
+  echo
+fi
+# Loop through all hostgroups, add ones with no members to the list
+for hostgroup in ${all_hostgroups}; do
+  if [[ ${verbose_mode} == "yes" ]]; then
+    echo "--> Hostgroup: ${hostgroup}"
+  else
+    # Not verbose, output a single '.' per hostgroup search
+    echo -e ".\c"
+  fi
+  ipa hostgroup-show ${hostgroup} | grep 'Member hosts' &> /dev/null
+  return_code="$?"
+  if [[ ${return_code} == "0" ]]; then
+    # Members found
+    if [[ ${verbose_mode} == "yes" ]]; then
+      echo "---Members found."
+    else
+      # Do nothing ':' (equivalent to Python's 'pass')
+      :
+    fi
+  elif [[ ${return_code} == "1" ]]; then
+    # No members found
+    if [[ ${verbose_mode} == "yes" ]]; then
+      echo "---No members. (${hostgroup})"
+    fi
+    hostgroup_nomembers+="${hostgroup} "
+  else
+    # Some other error occurred
+    if [[ ${verbose_mode} == "yes" ]]; then
+      echo "---Warning: Some other error occurred. (${hostgroup})"
+    fi
+    hostgroup_error+="${hostgroup} "
+  fi
+done
+if [[ ${verbose_mode} == "no" ]]; then
+  # Extra space required if not verbose because of no newlines for '.' status output
+  echo -e "[Done]"
+fi
+echo -e "\n-------------------------------------"
+echo -e "---- Host Groups with No Members ----"
+echo -e "-------------------------------------"
+echo -e "\n>> Host Groups with No Members: $(echo ${hostgroup_nomembers} | wc -w)"
+for hostgroup in ${hostgroup_nomembers}; do
+  echo -e "${hostgroup}"
+done
+echo -e "\n>> Host Groups that had some type of grep search error: $(echo ${hostgroup_error} | wc -w)"
+for hostgroup in ${hostgroup_error}; do
+  echo -e "${hostgroup}"
+done
+echo -e "\n=========================================="
+echo -e "=- Report: Empty Host Groups Completed. -="
+echo -e "=========================================="
+</code>
+----