What is Let’s Encrypt?
About Let’s Encrypt: Let’s Encrypt is an open source certificate authority (CA) that offers free SSL certificates for the domains. It can automatically generate, install, and renew SSL certificates for an account. Let’s…
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SSH Command
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How to open a file using the “vi” text editor ?
INTRODUCTION: The vi editor (visual editor) is a screen editor which is available on the almost all Unix systems. Once you have learned vi, you will find that it is a fast and…
How to search for a string in a specific file?
Grep Command: The grep command, which means a global regular expression print, it remains amongst the most versatile commands in a Linux terminal environment. String : A string is a contiguous sequence of values,…
What command is used to edit the file in SSH?
The Pico (Pine composer) is a text editor for the Unix and Unix-based computer systems. This has been designed by the Office of the Computing and Communications at the University of Washington and…
How to list currently logged-in users and their location?
A system administrator should know who is on the system at any particular time. We can find the list of users currently logged in the system and their geographical locations through SSH command…