Category: Linux

Linux Server Managment

Linux Find Out Graphics Card Installed In My System

I am a new Linux system user. I am using Ubuntu Linux. I do not want to open up the computer hardware to just see the make and model of the graphics card in a system. How do I find...

/ April 17, 2019

How do I check if a port is in use on Linux?

I am a new Linux system user. I need to find out which process is listening on a port on Linux using the command line. How do you find out which process is listening on a port on Linux operating...

/ April 17, 2019

How to change the ssh port on Linux or Unix server nixCraft Updated Tutorials/Posts

I am a new Linux/Unix server admin. How do I change the SSH Port for my Linux or Unix server using command line option? You can easily change the SSH Port for Your Linux or Unix server. The ssh port...

/ March 20, 2019

How do I know if my Linux is 32 bit or 64 bit? nixCraft

I need to find out if my Linux server is running on 32-bit or 64-bit system. How do I know if my Linux is 32 bit or 64 bit? To check if your Linux server is running a 32-bit or...

/ December 18, 2018

How to update LXD container Ubuntu image from 16.04 to 18.04 nixCraft

I run my app inside Ubuntu Linux 16.04 LTS lxd Linux container. To upgrade Ubuntu 16.04 to 18.04 LTS container, I run do-release-upgrade command, but I am getting the error message that read as “Must be connected to a terminal.”...

/ December 15, 2018

5 Tips To Speed Up Linux Software Raid Rebuilding And Re-syncing nixCraft Updated Tutorials/Posts

It is no secret that I am a pretty big fan of excellent Linux Software RAID. Creating, assembling and rebuilding small array is fine. But, things started to get nasty when you try to rebuild or re-sync large size array....

/ December 15, 2018

Linux / UNIX: Check If File Is Empty Or Not Using Shell Script nixCraft Updated Tutorials/Posts

How do I check if a file is empty or not using bash or ksh shell script under a UNIX / Linux / macOS / OS X / BSD family of operating systems? How do I check if a file...

/ December 13, 2018

How to setup a UFW firewall on Ubuntu 16.04 LTS server nixCraft Updated Tutorials/Posts

How do I setup a firewall with UFW (uncomplicated firewall) on an Ubuntu Linux 16.04 LTS server to restrict traffic on my personal web-server that hosts my pictures and blogs for my family members?UFW is an acronym for uncomplicated firewall....

/ December 8, 2018

How to find out Raspberry Pi GPU and ARM CPU temperature on Linux nixCraft Updated Tutorials/Posts

I am using a Raspberry PI 2/3 credit size computer. How do I find out my Raspberry PI GPU or CPU temperature from Linux operating system command line option? How do I monitor the core temperature of my Raspberry Pi...

/ December 8, 2018

Bash get exit code of command on a Linux / Unix nixCraft

I am a new Linux system user. How do I get the exit code of a command? How do I get the exit code or status of Linux or Unix shell command and store it into a shell variable?Introduction –...

/ December 4, 2018

Bash read file names from a text file and take action nixCraft

I need to read a list of file names from a text file named input.txt and take action each file name. How do I read file names from a text file and say run /bin/foo command on each file? How...

/ December 4, 2018

How to set up a firewall using FirewallD on RHEL 8 nixCraft

I am a new Red Hat Enterprise Linux sysadmin. How do I set up a firewall using FirwallD on RHEL 8? Introduction – A Linux firewall used to protect your workstation or server from unwanted traffic. You can set up...

/ December 3, 2018

How to install and use Nginx on OpenSUSE Linux server nixCraft

How do I install and configure the latest version of Nginx web server on OpenSUSE Linux server using the CLI and host a static site?Introduction – Nginx [engine x] is free and open source high-performance web server. It also acts...

/ December 2, 2018

FreeBSD Install wget Utility To Download Files From Internet nixCraft Updated Tutorials/Posts

How do I install wget the non-interactive network downloader under FreeBSD operating systems? How do I install wget on FreeBSD 8.x/9.x/10.x/11.x/12.x? You can use any one of the following method to install GNU Wget non-interactive program on a FreeBSD operating...

/ December 2, 2018