Category: Linux

Linux Server Managment

How to install curl command on Ubuntu Linux nixCraft Updated Tutorials/Posts

I am a new Ubuntu Linux user. I switched from Apple MacOS/Macbook and I am trying to run the curl command from a shell script but getting the following error:bash: curl: command not foundHow do

Linux Monitor Hard Disks Temperature With hddtemp nixCraft Updated Tutorials/Posts

There is an excellent little utility to monitor hard drive temperature. Most modern computer hard disk including SSD comes with S.M.A.R.T (Self-Monitoring, Analysis, and Reporting Technology). It is a monitoring system for computer hard disks

How to check disk space on Unix servers nixCraft

I recently switched from a Windows server 2016 to a FreeBSD Unix server. I need to check disk space on Unix command line. How do I find out disk space utilization information using the Unix

How to install snapd on Fedora Linux system using dnf command nixCraft Updated Tutorials/Posts

How do I install snapd on Fedora Linux to run and manage snaps?Snaps are nothing but Linux software packages in containers format. They are simple to create and easy to install on Fedora Linux. Many

How to update source tree at /usr/src using svn on FreeBSD nixCraft Updated Tutorials/Posts

I compiled custom FreeBSD kernel for my FreeBSD jail to use vnet. How do I update my FreeBSD /usr/src/ code tree? How can I update source tree at /usr/src on FreeBSD using svn command to

Using the NGINX Plus Ingress Controller for Kubernetes with OpenID Connect Authentication from Azure AD

NGINX Open Source is already the default Ingress resource for Kubernetes, but NGINX Plus provides additional enterprise?grade capabilities, including JWT validation, session persistence, and a large set of metrics. In this blog we show how to

Can I delete /var/cache/apt/archives for Ubuntu/Debian Linux? nixCraft

I noticed that /var/cache/apt/archives/ taking lots of disk space on my AWS EC2 cloud server powered by Debian Linux. Can I delete /var/cache/apt/archives/ folder? Is it safe to remove all files? Do we absolutely necessary

How To Check Swap Usage Size and Utilization in Linux nixCraft Updated Tutorials/Posts

How do I check swap (paging) usage under Linux operating systems using command bash/ksh line options? How do I check swap usage size on Linux operating system?Swap space (also known as paging) is nothing but

How to check open ports in Linux using the CLI nixCraft

I need to list all open ports in Linux cloud server. How do I check open ports in Linux using the CLI? Can you give me the command to check open ports in Linux operating

Running Blockchain Applications in Hyperledger Explorer

Hyperledger Explorer is a powerful utility that allows users to create user-friendly web-based applications. It is a blockchain dashboard and provides the ability to view, invoke, deploy, and query raw blockchain data and network information,

How to set up automatic updates for Ubuntu Linux 18.04 nixCraft

How do I configure automatic updates for Ubuntu Linux 18.04 LTS “Bionic Beaver” server?The Linux server security is indeed an essential task for sysadmins. One of the most fundamental ways to keep the server secure

How to reinstall a package using apt-get on a Debian or Ubuntu Linux nixCraft Updated Tutorials/Posts

I am a new Debian Linux / Ubuntu Linux LTS user. How do I reinstall a package using apt-get command line? Is there an ‘apt-get force reinstall package’ command?The Advanced Packaging Tool (APT) works on

Linux Execute Cron Job After System Reboot nixCraft Updated Tutorials/Posts

I am on Red Hat Enterprise Linux server. Is there is an easy way to run script or command at boot time after fresh reboot command? How can I execute cron job on Linux after

How To Flush Contents Of a Memcached Server Using Command Line nixCraft Updated Tutorials/Posts

I have installed memcached server under Linux, but it is still showing old data. How do I flush the contents of a Memcached instance / server on Linux or Unix-like systems?You can invalidate all existing

Disable SELinux on CentOS 7 / RHEL 7 / Fedora Linux nixCraft

I need to disable SELinux on CentOS 7. How can I disable SELinux from the command line over ssh based session?SELinux is an acronym for Security-Enhanced Linux. It is a Linux kernel security feature for

How To Install Speedtest-cli On a CentOS / RHEL / Fedora Linux To Check Internet Speed nixCraft Updated Tutorials/Posts

I do not want to use Adobe flash based speed testing site due to security concern on my desktop. How do I install Speedtest-cli on a CentOS Linux or Fedora Linux or Red Hat Enterise

Getting Yesterdays or Tomorrows Day With Bash Shell Date Command nixCraft Updated Tutorials/Posts

When invoked without arguments, the date command displays the current date and time. Depending on the options specified, the date would set the date and time or print it in a user-defined format. However, how

How to install LAMP on Debian 10 (Buster) nixCraft

How do I install a LAMP stack on Debian 10 (Buster)?The LAMP is an acronym for software stack that includes Linux, Apache web server, MariaDB database (MySQL drop in replacement), and PHP web scripting language.

How to delete a UFW firewall rule on Ubuntu / Debian Linux nixCraft

How do I remove and delete a UFW firewall rule running on Ubuntu or Debian Linux?UFW is an acronym for an uncomplicated firewall. Securing a network with the uncomplicated firewall is super easy. The Ubuntu

Linux – How To Copy a Folder [ Command Line Option ] nixCraft Updated Tutorials/Posts

I am a new Linux system user. How do I copy a directory or folder under Linux operating system using command line options and bash shell?Introduction: A file is a collection of data items stored