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Df Command in Linux - How is works ?

This article covers how to use the df command in Linux. You can use the df command when you need to know how much space is available on a particular file system or to see an overview of mounted files systems.

If you want to display all the file system, use -a option:

df -a


Options for df command includes:

  • -a, –all : includes pseudo, duplicate and inaccessible file systems.
  • -B, –block-size=SIZE : scales sizes by SIZE before printing them.
  • -h, –human-readable : print sizes in power of 1024.
  • -H, –si: print sizes in power of 1000.
  • -i, –inodes : list inode information instead of block usage.
  • -l, –local : limit listing to local file systems.
  • -P, –portability : use POSIX output format.
  • –sync : invoke sync before getting usage info.
  • –total : elide all entries insignificant to available space, and produce grand total.
  • -t, –type=TYPE : limit listing to file systems of type TYPE.
  • -T, –print-type : print file system type.

Install NtopNG on Linux Mint 20 - Step by Step Process ?

This article covers easy steps to install the NtopNG utility on your Linux Mint 20 system. Once it is installed on your system, you can start using it for network traffic monitoring after configuring it according to the specifications of your machine.

To check whether NtopNG is installed or not, run the command:

$ systemctl status ntopng

To start NtopNG service, execute the command:

$ systemctl start ntopng

Top 6 Best Open-Source Firewalls

This article covers the best-rated and most reviewed Open Source firewall software for Linux. Open Source Firewall is best known for protecting the network from a threat by filtering the inbound and outbound traffic and ensure network security.

Top 7 Best Free SSL Certificate Services

This article covers a detailed review of the leading SSL certificate provision services in the market. Many SSL certificate providers offer brilliant security and privacy-related services but at a hefty cost. However, in this article, we discuss the SSL certificate providers that offer their World Wide Web protection services either for free or offer free trials so that users can acquaint themselves with the services to make the best decisions for their products, or their organizations. Let's Encrypt and SSL For Free offer free SSL certification for all, whereas Comodo, Cloudfare, HubSpot, GeoTrust, and GoDaddy offer free trials varying between the free trial periods ranging from 14 days for up to 30 days.

Website security is a top concern for site owners and visitors alike. If your site isn't secure, people won’t feel safe browsing, purchasing, making clicks, or entering any information on your pages.

Install Siege Benchmarking Tool on Ubuntu 20.04 - Step by Step Process ?

This article covers how to install Siege benchmarking tool on Ubuntu Linux System using two methods: using the APT and the tar.gz package. Siege allows you to test a web server with n number of users t number of times. Siege offers three modes of operation: Regression, internet simulation, and brute force.

Once the Siege is installed, you can verify the installed version of Siege using the following command:

$ siege --version

Install Adobe Acrobat Reader in Ubuntu 20.04 - Step by Step Process ?

This article covers how to install and use Adobe acrobat reader to view PDF files on your Ubuntu 20.04 system.

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