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Senthil Kumar

A Linux Consultant, living in India. He loves very much to write about Linux, Open Source, Computers and Internet. Apart from that, He'd like to review Internet tools and web services.
Restrict Sftp Users Home Using Chroot Jail

How to Restrict SFTP Users to Home Directories Using chroot Jail

13 Comments

In this tutorial, we will be discussing how to restrict SFTP users to their home directories or specific directories. It means the user can only access his/her respective home directory, not the entire file

Compress and Optimize Images in Linux

How to Optimize and Compress JPEG or PNG Images in Linux Commandline

35 Comments

You have a lot of images, and want to optimize and compress the images without losing its original quality before uploading them to any cloud or local storages? There are plenty of GUI applications

Find Largest Files and Directories Size in Linux

How to Find Out Top Directories and Files (Disk Space) in Linux

20 Comments

As a Linux administrator, you must periodically check which files and folders are consuming more disk space. It is very necessary to find the unnecessary junks and free up them from your hard disk.

Block SSH and FTP Access Using IPtables/FirewallD

How to Block SSH and FTP Access to Specific IP and Network Range in Linux

10 Comments

Typically we all use SSH and FTP services often to access the remote servers and virtual private servers. As a Linux administrator, you must aware about how to block SSH and FTP access to

Rsync Files Over SSH Non-standard Port

How to Sync Files/Directories Using Rsync with Non-standard SSH Port

6 Comments

Today, we will be discussing about how to sync files using rsync with non-standard SSH port. You might wonder why do we need to use non-standard SSH port? It is because of security reasons.

Check Linux System is 32-bit or 64-bit

5 Command Line Ways to Find Out Linux System is 32-bit or 64-bit

11 Comments

This tutorial describes how to find out whether your Linux system’s OS is 32-bit or 64-bit. This will be helpful if you wanted to download or install an application in your Linux system. As

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Linux Server Monitoring Tools

20 Netstat Commands for Linux Network Management

Linfo – Shows Linux Server Health Status in Real-Time

How to Install Nagios 4 in Ubuntu and Debian

How to Monitor Apache Performance using Netdata on CentOS 7

Netdata – A Real-Time Performance Monitoring Tool for Linux Systems

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Learn Linux Tricks & Tips

How to Encrypt and Decrypt Files and Directories Using Tar and OpenSSL

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Understanding Shutdown, Poweroff, Halt and Reboot Commands in Linux

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