Linux User Info - Simple tool to speed up linux system administration.
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#!/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