Bash Script For Monitoring Linux Systems And Servers ~ ServerComputing

Its a simple Bash script to check, test and monitor basic system performance, services, resources, etc. With this Bash script, you can do the 11 tasks listed below. Also feel free to edit the script as needed.

View the hostname of the system
View system date and time
Check the free memory
Check Hard disk free space
Check status of some regular services (you may need to edit the script to add your own services and daemons)
View system ip address information
Check internet connection by pinging to the domain "google.com"
Check the system uptime
List all the currently logged in users (including remote SSH logins)
Review system processes and CPU load
Schedule a shutdown

Creating Bash script
[root@server ~] vi basic_info
#Now add all the below text(green in colour) to the file

#!/bin/bash

clear

menu=

time=

echo "=========== =========== ========="
echo "WELCOME TO MACHINE INFO SCRIPT"
echo "=========== =========== ========="

echo "1: View the hostname of this machine"

echo "2: View system date and time"

echo "3: Check free RAM space"

echo "4: Check Hard disk free space"

echo "5: Check status of regular services"

echo "6: View system ipaddress information"

echo "7: Check internet connection (ping to Google)"

echo "8: Check how long system is running"

echo "9: List the current logged in users information"

echo "10: Review system process and cpu"

echo "11: Schedule a shutdown"

echo "0: Exit from Script"

until [ "$menu" = "0" ]; do

echo -n "enter menu selection>"

read menu

if [ "$menu" = "0" ]; then

echo "Bye, Exiting Script...." $exit

case $menu in

1 ) hostname ;;

2 ) date ;;

3 ) free -m ;;

4 ) df -h ;;

5 ) service postfix status

service dovecot status

service squid status

service smb status

service openvpn status

service vsftpd status

service httpd status

service dhcpd status

service named status ;;

6 ) ifconfig ;;

7 ) ping google.com ;;

8 ) uptime ;;

9 ) w ;;

10 ) top ;;

11 ) echo -n "enter the shutdown time in 24hr format(eg: 14:45)>"

read time

echo " Your linux machine will shutdown at $time"

shutdown -h $time ;;

esac

done
#Now save the file and exit from the editor

Set execute permission
[root@server ~] chmod 755 basic_info

Run the Script and do tasks
[root@server ~] ./basic_info