diff --git a/lui_checkpoint_fw.sh b/lui_checkpoint_fw.sh
new file mode 100644
index 0000000..7565ba0
--- /dev/null
+++ b/lui_checkpoint_fw.sh
@@ -0,0 +1,168 @@
+#!/bin/bash
+# LUI for RedHat Linux / CheckPoint Firewall - Version 2.11
+#
+# Description: This script searches and organizes information about users on RedHat systems. It is written to make administration easier and for better transparency.
+#
+# Note: LUI has been tested on most CheckPoint firewalls (before 2015).
+#
+# Author: s1x
+# License: GNU AFFERO GENERAL PUBLIC LICENSE - Version 3, 19 November 2007
+#
+# Copyright (C) 2015 s1x, pgp key 0xF673700F
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published
+# by the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ 
+
+function help {
+  echo '''
+     Linux User Info v2.1
+
+        -h This help message.
+        -i User information, use as "-i user".
+        -x eXtended information.
+        -a List all users.
+        -l List all users with locked password.
+        -u List all users with unlocked password.
+        -n List users with nologin shell.
+
+        You can user multiple arguments too, eg. "sh lui_checkpoint_fw.sh -l -u"
+'''
+}
+
+function user_info {
+  data=$(grep ^$OPTARG: /etc/passwd)
+  if [ -z "$data" ]
+    then
+      echo "User not found in /etc/passwd."
+      exit ;
+  fi
+  user=$(echo $data | cut -d: -f1 | head -1)
+  comment=$(grep ^$user /etc/passwd | cut -d: -f5)
+  if [ -z "$comment" ]
+    then
+      comment="-"
+  fi
+  home=$(echo $data | cut -d: -f6)
+  if [ -z "$home" ]
+    then
+      home="-"
+  fi
+  homepriv=$(ls -ld $home)
+  if [ -z "$homepriv" ]
+    then
+      homepriv="Home directory does not exist."
+  fi
+  pass=$(passwd -S root)
+  groups=$(grep "^$user:" /etc/group | rev | cut -d: -f1 | rev)
+  if [ -z "$groups" ]
+    then
+      groups="-"
+  fi
+  shell=$(echo $data | cut -d: -f7)
+  group=$(echo $data | cut -d: -f3)
+  ID=$(echo $data | cut -d: -f4)
+
+  echo
+  echo "User name:      $user"
+  echo "Comment:        $comment"
+  echo "Password:       $pass"
+  echo "Home dir:       $home"
+  echo "Home perm:      $homepriv"
+  echo "Groups:         $groups"
+  echo "Login shell:    $shell"
+  echo "User ID:        $ID"
+  echo "Group ID:       $group"
+  echo
+}
+
+function eXtended {
+#Experimental function!
+  echo
+  echo "User information"
+  echo "----------------"
+  user_info
+  chage -l $user | tr -d '\t'
+  echo
+  echo
+  echo "Login information"
+  echo -e "----------------- \n"
+  echo "Last four logins:"
+  last | grep $user | tail -4
+  echo
+  fails=$(pam_tally2 --user root | sed -n '1!p' | rev | tr -s ' ' | rev | cut -d ' ' -f 2)
+  echo "Numer of current failed logins: " $fails
+  echo "(Couter reset with pam_tally2.)"
+  echo
+  fail_list=$(grep sshd.\*Failed /var/log/secure | grep $user)
+  if [ ! -z "$fail_list" ]
+    then
+      echo "Last six login fails:"
+      grep sshd.\*Failed /var/log/secure | grep $user | tail -6
+  fi
+  echo
+}
+
+function all_users {
+  min_uid=$(grep "^UID_MIN" /etc/login.defs | tr -s ' ' | cut -d' ' -f2)
+  echo "System users / Under UID $min_uid"
+  echo "---------------------------------"
+  awk -F':' -v "minuid=$min_uid" '{ if ( $3 < minuid ) print $0 }' /etc/passwd
+  echo
+  echo "Normal users / Below UID $min_uid"
+  echo "---------------------------------"
+  awk -F':' -v "minuid=$min_uid" '{ if ( $3 >= minuid ) print $0 }' /etc/passwd
+}
+
+function locked_users {
+  echo "Locked users:"
+  cat /etc/passwd | cut -d : -f 1 | awk '{ system("passwd -S " $0) }' | grep "locked"
+  echo
+}
+
+function unlocked_users {
+  echo "Unlocked users:"
+  cat /etc/passwd | cut -d : -f 1 | awk '{ system("passwd -S " $0) }' | grep -v "locked."
+  echo
+}
+
+function nologin_users {
+  echo "Users with nologin:"
+   grep /nologin /etc/passwd
+  echo
+}
+
+
+while getopts ":hi:x:alun" opt;
+  do
+case $opt in
+      h) help ;;
+      i) user_info ;;
+      x) eXtended ;;
+      a) all_users ;;
+      l) locked_users ;;
+      u) unlocked_users ;;
+      n) nologin_users ;;
+     \?)
+         echo "Invalid option."
+         exit 1 ;;
+      :)
+        echo "Option -$OPTARG requires an argument."
+
+    esac
+done
+
+if [ -z "$1" ]
+  then
+    help
+fi
diff --git a/lui_debian.sh b/lui_debian.sh
new file mode 100755
index 0000000..92f2532
--- /dev/null
+++ b/lui_debian.sh
@@ -0,0 +1,166 @@
+#!/bin/bash
+# LUI for Debian - Version 2.1.6b
+#
+# Description: This script searches and organizes information about users on Debian systems. It is written to make administration easier and for better transparency.
+#
+# Note: this program has been tested on Debian 7 and Debian 8.
+#
+# Author: s1x
+# License: GNU AFFERO GENERAL PUBLIC LICENSE - Version 3, 19 November 2007
+#
+# Copyright (C) 2015 s1x, pgp key 0xF673700F
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published
+# by the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+function help {
+  echo '''
+    Linux User Info
+
+        -h This help message.
+        -i User information, use as "-i user".
+        -x eXtended information.
+        -a List all users.
+        -l List all users with locked password.
+        -u List all users with unlocked password.
+        -n List users with nologin shell.
+
+        You can use multiple arguments too, eg. "./lui_deb.sh -l -u"
+  '''
+}
+
+function user_info {
+  data=$(grep ^$OPTARG: /etc/passwd)
+  if [ -z "$data" ]
+    then
+      echo "User not found in /etc/passwd."
+      exit ;
+  fi
+  user=$(echo $data | cut -d: -f1)
+  comment=$(grep ^$user /etc/passwd | cut -d: -f5)
+  if [ -z "$comment" ]
+    then
+      comment="-"
+  fi
+  home=$(echo $data | cut -d: -f6)
+  if [ -z "$home" ]
+    then
+      home="-"
+  fi
+  homepriv=$(ls -ld $home | awk {'print $1,$3,$4'})
+  if [ -z "$homepriv" ]
+    then
+      homepriv="Home directory does not exist."
+  fi
+  pass=$(passwd -S $OPTARG | cut -d' ' -f2-)
+  groups=$(groups $user | cut -d: -f2)
+  if [ -z "$groups" ]
+    then
+      groups="-"
+  fi
+  shell=$(echo $data | cut -d: -f7)
+  groupid=$(echo $data | cut -d: -f3)
+  ID=$(echo $data | cut -d: -f4)
+
+  echo
+  echo "User name:   $user"
+  echo "Comment:     $comment"
+  echo "Password:    $pass"
+  echo "Home dir:    $home"
+  echo "Home perm:   $homepriv"
+  echo "Groups:     $groups"
+  echo "Login shell: $shell"
+  echo "User ID:     $ID"
+  echo "Group ID:    $groupid"
+  echo
+}
+
+function eXtended {
+#Experimental function!
+  echo
+  echo "User information"
+  echo "----------------"
+  user_info
+  chage -l $user | tr -d '\t'
+  echo
+  echo
+  echo "Login information"
+  echo -e "----------------- \n"
+  echo "Last four logins:"
+  last | grep $user | tail -4 | tr -s ' '
+  echo
+  fails=$(pam_tally --user $user | rev | cut -d ' ' -f1 | rev)
+  echo "Numer of failed logins: " $fails
+  echo
+  fail_list=$(grep sshd.\*Failed /var/log/auth.log | grep $user)
+  if [ ! -z "$fail_list" ]
+    then
+      echo "Last six login fails:"
+      grep sshd.\*Failed /var/log/auth.log | grep $user | tail -6
+  fi
+}
+
+function all_users {
+  min_uid=$(grep "^UID_MIN" /etc/login.defs | tr -s ' ' | cut -d' ' -f2)
+  echo "System users / Under UID $min_uid"
+  echo "---------------------------------"
+  awk -F':' -v "minuid=$min_uid" '{ if ( $3 < minuid ) print $0 }' /etc/passwd
+  grep nobody /etc/passwd
+   echo
+  echo "Normal users / Below UID $min_uid"
+  echo "---------------------------------"
+  awk -F':' -v "minuid=$min_uid" '{ if ( $3 >= minuid ) print $0 }' /etc/passwd | grep -v ^nobody:
+  echo
+}
+
+function locked_users {
+  echo "Locked users:"
+  cat /etc/passwd | cut -d : -f 1 | awk '{ system("passwd -S " $0) }' | grep -e "\sL\s"
+  echo
+}
+
+function unlocked_users {
+  echo "Unlocked users:"
+  cat /etc/passwd | cut -d : -f 1 | awk '{ system("passwd -S " $0) }' | grep -v -e "\sL\s"
+  echo
+}
+
+function nologin_users {
+  echo "Users with nologin:"
+  cat /etc/passwd | grep /nologin
+  echo
+}
+
+
+while getopts ":hi:x:alun" opt;
+  do
+    case $opt in
+      h) help ;;
+      i) user_info ;;
+      x) eXtended ;;
+      a) all_users ;;
+      l) locked_users ;;
+      u) unlocked_users ;;
+      n) nologin_users ;;
+     \?)
+         echo "Invalid option." 
+         exit 1 ;;
+      :)
+        echo "Option -$OPTARG requires an argument." ;;
+    esac
+  done
+
+if [ -z "$1" ]
+  then
+    help
+fi
diff --git a/lui_redhat.sh b/lui_redhat.sh
new file mode 100644
index 0000000..6ce0f97
--- /dev/null
+++ b/lui_redhat.sh
@@ -0,0 +1,168 @@
+#!/bin/bash
+# LUI for RedHat Enterprise Linux - Version 2.1.7b
+#
+# Description: This script searches and organizes information about users on RedHat systems. It is written to make administration easier and for better transparency.
+#
+# Note: this program has been tested on RedHat 6, RedHat 7, CentOS 7 and Fedora 20.
+#
+# Author: s1x
+# License: GNU AFFERO GENERAL PUBLIC LICENSE - Version 3, 19 November 2007
+#
+# Copyright (C) 2015 s1x, pgp key 0xF673700F
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published
+# by the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+function help {
+  echo '''
+     Linux User Info v2.1.7b
+
+        -h This help message.
+        -i User information, use as "-i user".
+        -x eXtended information.
+        -a List all users.
+        -l List all users with locked password.
+        -u List all users with unlocked password.
+        -n List users with nologin shell.
+
+        You can user multiple arguments too, eg. "./lui_rhl.sh -l -u"
+'''
+}
+
+function user_info {
+  data=$(grep ^$OPTARG: /etc/passwd)
+  if [ -z "$data" ]
+    then
+      echo "User not found in /etc/passwd."
+      exit ;
+  fi
+  user=$(echo $data | cut -d: -f1 | head -1)
+  comment=$(grep ^$user /etc/passwd | cut -d: -f5)
+  if [ -z "$comment" ]
+    then
+      comment="-"
+  fi
+  home=$(echo $data | cut -d: -f6)
+  if [ -z "$home" ]
+    then
+      home="-"
+  fi
+  homepriv=$(ls -ld $home | awk {'print $1,$3,$4'})
+  if [ -z "$homepriv" ]
+    then
+      homepriv="Home directory does not exist."
+  fi
+  pass=$(passwd -S $OPTARG | awk {'print $8,$9,$10,$11'} | sed -e 's/(//' -e 's/)//')
+  groups=$(grep "^$user:" /etc/group | rev | cut -d: -f1 | rev)
+  if [ -z "$groups" ]
+    then
+      groups="-"
+  fi
+  shell=$(echo $data | cut -d: -f7)
+  group=$(echo $data | cut -d: -f3)
+  ID=$(echo $data | cut -d: -f4)
+
+  echo
+  echo "User name:      $user"
+  echo "Comment:        $comment"
+  echo "Password:       $pass"
+  echo "Home dir:       $home"
+  echo "Home perm:      $homepriv"
+  echo "Groups:         $groups"
+  echo "Login shell:    $shell"
+  echo "User ID:        $ID"
+  echo "Group ID:       $group"
+  echo
+}
+
+function eXtended {
+#Experimental function!
+  echo
+  echo "User information"
+  echo "----------------"
+  user_info
+  chage -l $user | tr -d '\t'
+  echo
+  echo
+  echo "Login information"
+  echo -e "----------------- \n"
+  echo "Last four logins:"
+  last | grep $user | tail -4
+  echo
+  fails=$(pam_tally2 --user root | sed -n '1!p' | rev | tr -s ' ' | rev | cut -d ' ' -f 2)
+  echo "Numer of current failed logins: " $fails
+  echo "(Couter reset with pam_tally2.)"
+  echo
+  fail_list=$(grep sshd.\*Failed /var/log/secure | grep $user)
+  if [ ! -z "$fail_list" ]
+    then
+      echo "Last six login fails:"
+      grep sshd.\*Failed /var/log/secure | grep $user | tail -6
+  fi
+  echo
+}
+
+function all_users {
+  min_uid=$(grep "^UID_MIN" /etc/login.defs | tr -s ' ' | cut -d' ' -f2)
+  echo "System users / Under UID $min_uid"
+  echo "---------------------------------"
+  awk -F':' -v "minuid=$min_uid" '{ if ( $3 < minuid ) print $0 }' /etc/passwd
+  echo
+  echo "Normal users / Below UID $min_uid"
+  echo "---------------------------------"
+  awk -F':' -v "minuid=$min_uid" '{ if ( $3 >= minuid ) print $0 }' /etc/passwd
+}
+
+function locked_users {
+  echo "Locked users:"
+  cat /etc/passwd | cut -d : -f 1 | awk '{ system("passwd -S " $0) }' | grep "locked"
+  echo
+}
+
+function unlocked_users {
+  echo "Unlocked users:"
+  cat /etc/passwd | cut -d : -f 1 | awk '{ system("passwd -S " $0) }' | grep -v "locked."
+  echo
+}
+
+function nologin_users {
+  echo "Users with nologin:"
+   grep /nologin /etc/passwd
+  echo
+}
+
+
+while getopts ":hi:x:alun" opt;
+  do
+case $opt in
+      h) help ;;
+      i) user_info ;;
+      x) eXtended ;;
+      a) all_users ;;
+      l) locked_users ;;
+      u) unlocked_users ;;
+      n) nologin_users ;;
+     \?)
+         echo "Invalid option."
+         exit 1 ;;
+      :)
+        echo "Option -$OPTARG requires an argument."
+
+    esac
+done
+
+if [ -z "$1" ]
+  then
+    help
+fi
diff --git a/lui_ubuntu.sh b/lui_ubuntu.sh
new file mode 100644
index 0000000..6d56092
--- /dev/null
+++ b/lui_ubuntu.sh
@@ -0,0 +1,169 @@
+#!/bin/bash
+# LUI for Ubuntu - Version 2.1.6b
+#
+# Description: This script searches and organizes information about users on Ubuntu systems. It is written to make administration easier and for better transparency.
+#
+# Note: this program has been tested on Ubuntu 13.
+#
+# Author: s1x
+# License: GNU AFFERO GENERAL PUBLIC LICENSE - Version 3, 19 November 2007
+#   
+# Copyright (C) 2015 s1x, pgp key 0xF673700F
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published
+# by the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License 
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+
+help () {
+  echo '''
+    Linux User Info v2.1.6b
+
+        -h This help message.
+        -i User information, use as "-i user".
+        -x eXtended information.
+        -a List all users.
+        -l List all users with locked password.
+        -u List all users with unlocked password.
+        -n List users with nologin shell.
+
+        You can use multiple arguments too, eg. "./lui_ubu.sh -l -u"
+  '''
+  }
+
+user_info () {
+  data=$(grep ^$OPTARG: /etc/passwd)
+  if [ -z "$data" ]
+    then
+      echo "User not found in /etc/passwd."
+      exit ;
+  fi
+  user=$(echo $data | cut -d: -f1)
+  comment=$(grep ^$user /etc/passwd | cut -d: -f5)
+  if [ -z "$comment" ]
+    then
+      comment="-"
+  fi
+  home=$(echo $data | cut -d: -f6)
+  if [ -z "$home" ]
+    then
+      home="-"
+  fi
+  homepriv=$(ls -ld $home | awk {'print $1,$3,$4'})
+  if [ -z "$homepriv" ]
+    then
+      homepriv="Home directory does not exist."
+  fi
+  pass=$(passwd -S $OPTARG | cut -d' ' -f2-)
+  groups=$(grep $user /etc/group | cut -d: -f 1 | grep -v $user | paste -sd ' ')
+  if [ -z "$groups" ]
+    then
+      groups="-"
+  fi
+  shell=$(echo $data | cut -d: -f7)
+  group=$(echo $data | cut -d: -f3)
+  ID=$(echo $data | cut -d: -f4)
+
+  echo
+  echo "User name:   $user"
+  echo "Comment:     $comment"
+  echo "Password:    $pass"
+  echo "Home dir:    $home"
+  echo "Home perm:   $homepriv"
+  echo "Groups:      $groups"
+  echo "Login shell: $shell"
+  echo "User ID:     $ID"
+  echo "Group ID:    $group"
+  echo
+}
+
+eXtended () {
+#Experimental function!
+  echo
+  echo "User information"
+  echo "----------------"
+  user_info
+  chage -l $user | tr -d '\t'
+  echo
+  echo
+  echo "Login information"
+  echo "-----------------"
+  echo
+  echo "Last four logins:"
+  last | grep $user | tail -4 | tr -s ' '
+  echo
+  fails=$(pam_tally --user $user | rev | cut -d ' ' -f1 | rev)
+  echo "Numer of failed logins: " $fails
+  echo
+  fail_list=$(grep sshd.\*Failed /var/log/auth.log | grep $user)
+  if [ ! -z "$fail_list" ]
+    then
+      echo "Last six login fails:"
+      grep sshd.\*Failed /var/log/auth.log | grep $user | tail -6
+  fi
+}
+
+all_users () {
+  min_uid=$(grep "^UID_MIN" /etc/login.defs | tr -s ' ' | cut -d' ' -f2)
+  echo "System users / Under UID $min_uid"
+  echo "---------------------------------"
+  awk -F':' -v "minuid=$min_uid" '{ if ( $3 < minuid ) print $0 }' /etc/passwd
+  grep nobody /etc/passwd
+   echo
+  echo "Normal users / Below UID $min_uid"
+  echo "---------------------------------"
+  awk -F':' -v "minuid=$min_uid" '{ if ( $3 >= minuid ) print $0 }' /etc/passwd | grep -v ^nobody:
+  echo
+}
+
+locked_users () {
+  echo "Locked users:"
+  cat /etc/passwd | cut -d : -f 1 | awk '{ system("passwd -S " $0) }' | grep -e "\sL\s"
+  echo
+}
+
+unlocked_users () {
+  echo "Unlocked users:"
+  cat /etc/passwd | cut -d : -f 1 | awk '{ system("passwd -S " $0) }' | grep -v -e "\sL\s"
+  echo
+}
+
+nologin_users () {
+  echo "Users with nologin:"
+  grep /nologin /etc/passwd
+  echo
+}
+
+
+while getopts ":hi:x:alun" opt;
+  do
+    case $opt in
+      h) help ;;
+      i) user_info ;;
+      x) eXtended ;;
+      a) all_users ;;
+      l) locked_users ;;
+      u) unlocked_users ;;
+      n) nologin_users ;;
+     \?)
+         echo "Invalid option."
+         exit 1 ;;
+      :)
+        echo "Option -$OPTARG requires an argument." ;;
+    esac
+  done
+
+if [ -z "$1" ]
+  then
+    help
+fi