Shell Script | 2DayGeek

How to lock & unlock multiple users in Linux

February 23, 2021February 24, 2021 - by 2daygeek - 4 Comments.

‘usermod’ & ‘passwd’ commands are used to lock or unlock one user account at a time, but you may need to write some small shell scripts to perform this action …

Bash Script / Kill User Session / Shell Script

How to kill all user sessions using shell script in Linux?

January 18, 2021January 24, 2021 - by Magesh Maruthamuthu - 3 Comments.

System administrator task can be automated in various ways in Linux. It drastically reduces the human efforts and saves reasonable time which can be utilized for other productive tasks. shell …

Ethernet / Linux / Linux Commands / Network Interface Card / NIC / Shell Script

How to check Network Interface details in Linux

April 21, 2020March 31, 2021 - by Magesh Maruthamuthu - Leave a Comment

Server primary interface would be configured as part of the server build activity, but sometimes you may need to configure an additional network interface in Linux for several reasons. An …

Bash Script / Linux / Linux Commands / Shell Script / User Management

How to check user password expiration date in Linux

March 18, 2020June 14, 2021 - by Magesh Maruthamuthu - Leave a Comment

If you enabled a password policy on Linux, the password must be changed before it expires, otherwise you will be notified to change the password upon login until the password …

Bash Script / Linux / Linux Commands / Password Policy / Shell Script / User Management

Bash Script to Send eMail With a List of User Accounts Expiring in “X” Days

January 9, 2020January 20, 2021 - by Magesh Maruthamuthu - Leave a Comment

The password enforcement policy is common to all operating systems and applications. If you want to implement a password enforcement policy on Linux, go to the following article. The password …

Bash Script / Linux / Linux Commands / Shell Script / System Diagnostic Tool / System Performance Monitoring Tools

How to check long running high CPU and memory consumption processes on linux

January 6, 2020January 20, 2021 - by Magesh Maruthamuthu - Leave a Comment

In the past, we have written three different articles to identify this using Linux commands. You can access them immediately by going to the relevant URLs below. How to Find …

Bash Script / Linux Commands / Shell Script

Bash Script to Monitor CPU, Memory and Swap usage on Multiple Linux System With eMail Alert

December 16, 2019January 20, 2021 - by Magesh Maruthamuthu - 2 Comments.

You have a small infrastructure and want to check multiple system performance simultaneously for some reason. This script will help you to create a report for you. You can use …

Bash Script / Linux Commands / Shell Script / User Management

Bash Script to Check Successful and Failed User Login Attempts on Linux

December 2, 2019February 8, 2020 - by Magesh Maruthamuthu - Leave a Comment

One of the typical tasks of Linux administrators is to check successful and failed login attempts in the Linux system. This ensures that there are no illegal attempts at the …

Bash Script / Linux Advanced Commands / Linux Commands / Shell Script

Bash Script to View System Information on Linux Every Time You Log into Shell

November 20, 2019November 22, 2019 - by Magesh Maruthamuthu - 1 Comment

There are several commands in Linux to obtain system information such as processor information, manufacturer name, and serial number, etc,. You may need to run several commands to collect this …

Bash Script / FAQ / Linux Basic / Linux Commands / Shell Script

How to quickly check if a website is up or down

November 15, 2019May 19, 2021 - by Magesh Maruthamuthu - Leave a Comment

Linux users can easily test a websites availability from the command line by obtaining the status codes from the web server. The below HTTP response status codes will tell you …