SUSE 15 update installed packages for security

Iwould like to update installed packages for security on SUSE 15 (SUSE Linux Enterprise Server) server. How can I update my SUSE 15 system using zypper command?

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OpenBSD Install BASH Shell Package Command

How do I install BASH shell package under OpenBSD operating system? How do I set bash as a default login shell under OpenBSD?

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CentOS Linux 7.7 released and here is how to update it

The CentOS Linux project has released an updated version of its stable Linux distribution CentOS Linux 7.7. You must upgrade to get corrections for security problem as this version made a few adjustments for the severe issue found in CentOS 7.6. CentOS is a Linux distro that is mainly maintained and updated through the work of many users who volunteer their time and effort. It is based upon RHEL 7.7 upstream source code.

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RHEL 8 update installed packages for security

I would like to update installed packages for security on RHEL 8.x (Red Hat Enterprise Linux) server. How can I update my RHEL 8.x system using yum command?

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Linux Kernel 5.3 released and here is how to install it

Linux kernel version 5.3 released. This version includes many improvements including support for AMD Navi GPU, support for new IPv4 addresses in the 0.0.0.0/8 range, the lightweight hypervisor ACRN for embedded IoT devices and much more.

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How to install htop on FreeBSD

I am a new user of FreeBSD operating system. How do I install htop on FreeBSD using the pkg command?

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Use oathtool Linux command line for 2 step verification (2FA/TOTP)

I do not wish to use Google Authenticator or Authy TOTP app that generates 2 step verification (2FA) codes on my iOS/Android phone. Is there any way I can produce 2FA codes from Linux command line for popular sites such as Gmail, Twitter, Facebook, Amazon and more?

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FreeBSD Applying Security Updates Using pkg/freebsd-update

I am a new FreeBSD developer and user. I have root access to my VM running in AWS cloud. How do I update packages and apply security upgrades on FreeBSD? What is the procedure for applying security updates on FreeBSD?

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How to install Spotify application on Linux

How do I install Spotify application on Linux desktop to stream music?

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How to install Spotify application on Linux

How do I install Spotify application on Linux desktop to stream music?

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In comics: Linux celebrates 28th birthday

On 26 August 1991, Linus Torvalds announced hobby project that was supposed to better than Minix operating systems. He said I am doing a free operating system. Just a hobby and won't be big or professional like GNU. Linux turns 28 years old, and we are going to celebrate Linux's birthday by sharing comics in pop culture that made it even more popular.

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Dell announces new Linux XPS 13 developer edition 7390 laptop

Dell recently announced the new XPS 13 developer edition powered by Ubuntu Linux and Intel's 10th generation Comet Lake CPUs. The new device will soon be available in the US, Canada, and European markets. It is good news for both developers and Linux enthusiast who wants Linux laptop with preloaded Ubuntu operating systems. Let us see new Linux XPS 13 developer edition specs and other information.

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BASH Fix Display and Console Garbage and Gibberish on a Linux / Unix / macOS

This article describes how to really clear the terminal screen or reset terminal in Linux or Unix-like system. In other words, you will learn how to clear console garbage and gibberish without exiting the session on your Linux/Unix/macOS/BSD systems.

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How to install htop on RHEL 8 using yum

I am a new user of Red Hat Enterprise Linux 8. How do I install htop on RHEL 8 using the yum command?

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Explain: {,} in cp or mv Bash Shell Commands

I often see commands as follows posted on blog or forums
cp /etc/httpd/httpd.{,.bakup}
OR
mv resume{z,}.doc
What is the purpose of {,} in Linux and Unix shell commands?

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FreeBSD Display Information About The System Hardware

FreeBSD comes with different utilities, which can be used to gather the information as per your needs.Let us see all commands that can display hardware information on the FreeBSD server or desktop.

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How to use yum-cron to automatically update RHEL/CentOS Linux

The yum command line tool is used to install and update software packages under RHEL / CentOS Linux server. I know how to apply updates using yum update command line, but I would like to use cron to update packages where appropriate manually. How do I configure yum to install software patches/updates automatically with cron job?

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Ubuntu Linux Add a User To Group www-data ( Apache Group )

How do I add a user to the Apache group called www-data under Ubuntu or Debian Linux server operating systems using the command line option?

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How To Install EPEL Repo on an RHEL 8.x

How do I install the extra repositories such as Fedora EPEL repo on an Red Hat Enterprise Linux server version 8.x?

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How to Install and Configure latest version of Ansible on Ubuntu Linux

I am a new Ubuntu Linux user. How do I install Ansible on a Ubuntu Linux 16.04/18.04 LTS or 17.10/18.10 desktop control machine?

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Linux Find If Processor (CPU) is 64 bit / 32 bit [long mode ~ lm]

I am a new Linux system user. How do I determine if my CPU is 64bit or not on a Linux operating systems using command line option? How can I check Linux kernel is in 32 bit or 64 bit mode?

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How to add bash auto completion in RHEL 8 (Red Hat Linux)

I set up a new RHEL 8 VM from cloud images, but my auto-completion of bash shell commands are not working. How do I enable autocomplete feature in RHEL 8 (Red Hat Enterprise Linux 8)? How do I write simple bash completion code in RHEL 8?

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List or Check Installed Linux Kernels using command line

How do I list all installed kernel on Linux operating system? How do I find out current kernel version?

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How to install networked HP printer and scanner on Ubuntu Linux

I have HP Officejet Pro printer and scanner. How do I install HP Officejet Pro network printers and scanners on Ubuntu Linux? How can I install HP printer on Ubuntu Linux?

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How to check if port is in use on Linux or Unix

How do I determine if a port is in use under Linux or Unix-like system? How can I verify which ports are listening on Linux server? How do I check if port is in use on Linux operating system using the CLI?

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How to exclude file when using scp command recursively

I need to copy all the *.c files from local laptop named hostA to hostB including all directories. I am using the following scp command but do not know how to exclude specific files (such as *.out):$ scp -r ~/projects/ user@hostB:/home/delta/projects/. How do I tell scp command to exclude particular file or directory at the Linux/Unix command line?

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How To Set up SSH Keys on a Linux / Unix System

I recently read that SSH keys provide a secure way of logging into a Linux and Unix-based server. How do I set up SSH keys on a Linux or Unix based systems? In SSH for Linux/Unix, how do I set up public key authentication?

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How to check CPU temperature on Ubuntu Linux

How do I check CPU temperature in Ubuntu Linux using a command line and GUI tools on my Thinkpad laptop or Desktop computer?

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RHEL / Centos 6 - Install Nginx Using Yum Command

How can I install the latest version of Nginx web server On CentOS Linux 6 or Red Hat Enterprise Linux 6 using the yum command?

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10 Alpine Linux apk Command Examples

I am new Alpine Linux system admin user. How do I use apk command line utility for the package management on Apline Linux server running in cloud or a Linux container? How can I use the apk command for the package management?

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How to install htop on Ubuntu Linux using apt

I like htop output, but it is not installed by default on my Ubuntu cloud server. How do I install htop on Ubuntu Linux 18.04 LTS server?

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Linux / Unix whereis Command Examples

I am a new Linux and Unix-like system command line user. How do I find and locate the binary, source, and manual page files for a given command?

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How to install Ansible on Ubuntu 18.04 for IT automation

How do I install Ansible on Ubuntu 18.04 workstation? How can I set up and test Ansible playbooks using my Ubuntu Linux desktop?

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How to install curl command on Ubuntu Linux

I am trying to run the curl command from a shell script but getting the following error: bash: curl: command not found. How do I fix this on an Ubuntu Linux?

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Linux Monitor Hard Disks Temperature With hddtemp

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 to detect and report on various indicators of reliability, in the hope of anticipating failures.

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How to check disk space on Unix servers

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 command-line option?

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How to install snapd on Fedora Linux system using dnf command

How do I install snapd on Fedora Linux to run and manage snaps?

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How to update source tree at /usr/src using svn on FreeBSD

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 patch and compile kernel again?

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

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 to keep all these files?

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How To Check Swap Usage Size and Utilization in Linux

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?

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How to check open ports in Linux using the CLI

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 system?

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How to set up automatic updates for Ubuntu Linux 18.04

How do I configure automatic updates for Ubuntu Linux 18.04 LTS "Bionic Beaver" server?

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How to reinstall a package using apt-get on a Debian or Ubuntu Linux

I am a new Debian Linux / Ubuntu Linux LTS user. How do I reinstall a package using apt-get command or apt command line? Is there an 'apt-get force reinstall package' command?

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Linux Execute Cron Job After System Reboot

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 system restart?

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How To Flush Contents Of a Memcached Server Using Command Line

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?

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Disable SELinux on CentOS 7 / RHEL 7 / Fedora Linux

I need to disable SELinux on CentOS 7. How can I disable SELinux from the command line over ssh based session?

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

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 Linux (RHEL) for checking the Internet speed?

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Getting Yesterdays or Tomorrows Day With Bash Shell Date Command

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 do you get yesterdays with bash? What about tomorrows day? I have seen many sysadmins writing Perl scripts for calculating relative dates such as yesterdays or tomorrows day. You can use the GNU date command, which is designed to handle relative date calculation such as:

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How to install LAMP on Debian 10 (Buster)

How do I install a LAMP stack on Debian 10 (Buster)?

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

How do I remove and delete a UFW firewall rule running on Ubuntu or Debian Linux?

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