nixCraft Linux & Unix Sysadmin/DevOps Tutorial Newsletter

[nixCraft]

Welcome to nixCraft Linux/Unix newsletter for Saturday, 02 May 2020. I hope you will enjoy this version of the newsletter. 

• Debian 10 set up WireGuard VPN server {trending}
  How do I install and set up WireGuard VPN server on a Debian 10 Linux server? How can I configure Debian 10 as the WireGuard VPN server?
   
• Install LXD on Ubuntu 20.04 LTS using apt {trending}
  How can I install LXD pure-container hypervisor on Ubuntu 20.04 LTS Linux to runs unmodified Debian/Ubuntu/CentOS/Fedora/Arch Linux operating systems at incredible speed? How do I set up and use LXD on the Ubuntu Linux server? How do I install LXD on Ubuntu cloud server?
   
• Ubuntu 20.04 update installed packages for security
  I am a developer and using Ubuntu 20.04 LTS Linux server for my projects. I need to update installed packages for security on Ubuntu Linux 20.04 LTS server. How do I update my Ubuntu system using apt command and validate that security patches are applied?
   
• Upgrade Fedora 31 to Fedora 32 using the CLI {trending}
  I want to upgrade the Fedora version 31 to Fedora 32 Linux server using the command line option. How do I upgrade Fedora 31 to 32?
   
• How to sed remove last character from each line
  How can I use sed to delete the last character?
   
• How to install Squid Proxy Server on Ubuntu 20.04 LTS Linux
  How do I install Squid Proxy Server on Ubuntu 20.04 LTS Linux server for web clients? How can I filter out internet traffic for LAN users such as blocking domains, unwanted URLs, office hours for Internet access, and more using Squid running on Ubuntu server?
   
• Ubuntu 20.04 LTS Set Up OpenVPN Server In 5 Minutes {trending}
  I am a new Ubuntu Linux 20.04 LTS server system administrator. How can I set up an OpenVPN Server on an Ubuntu Linux version 20.04 LTS server to shield my browsing activity from bad guys on public Wi-Fi, encrypt all traffic while connecting to 4G LTE network, and more?
   
• Ubuntu install vnstat console network traffic monitor {trending}
  How do I install vnstat is a console-based network traffic monitor on Ubuntu to keep a log of the 5-minute interval, hourly, daily, monthly, and yearly network traffic for the selected interface?
   
• Ubuntu 20.04 set up WireGuard VPN server {trending}
  How can I install and set up WireGuard VPN server on an Ubuntu 20.4 LTS Linux server? How do I configure Ubuntu 20.04 as the WireGuard VPN server?
   
• How To Create a Sudo User on Ubuntu 20.04 LTS {trending}
  How do I create a new user with sudo access on Ubuntu 20.04 LTS Linux server? Can you tell me command to add sudo user on Ubuntu 20.04 Linux server?
   
• Systemd systemctl list all failed units/services on Linux
  Is there is a command to print list all failed units or services when using systemd on Linux? Can you tell me the systemctl command to show failed services on Linux?
   
• How To Configure Firewall with UFW on Ubuntu 20.04 LTS {trending}
  How do I set up and configure firewall with UFW on Ubuntu 20.04 LTS server?
   
• How to save terminal output to a file under Linux/Unix
  How do I save the terminal output to a file when using BASH/KSH/CSH/TCSH under Linux, macOS, *BSD or Unix-like operating systems?
   
• How to Change Hostname on Ubuntu 20.04
  How do I change the hostname on Ubuntu 20.04 LTS Linux system permanently?
   
• Linux Delete Symbolic Link ( Softlink )
  How can I remove symbolic links in Linux?
   
• How to create a user account on Ubuntu Linux
  I have Ubuntu Linux 18.4/20.04 LTS server running on AWS cloud. How do I create a user account on Ubuntu Linux server using the command line? How can I add users on Ubuntu?
   
• Linux Check Disk Space Command To View System Disk Usage
  How do I find out disk space utilization information using Linux command line option?
   
• Linux Shell script to add a user with a password to the system {trending}
  Are you wondering how to add a user with a password using a shell script under Linux? Let us see how to add a new user and set/change a password including chaning the existing Linux user’s password in a Linux shell script.
   
• Linux copy and clone USB stick including partitions command
  I need to copy and clone existing data from a USB stick. How do I clone a bootable USB key/pen drive on Linux? How do I clone a USB stick including partitions on Linux operating system?
   
• Ubuntu Linux view status of my network interfaces card
  Wondering how to view the status of your network interface under Ubuntu Linux and make sure network connectivity exists? Here are several ways to check the status of your network interfaces(NIC)/card.
   
• How To Use grep Command In Linux / UNIX {trending}
  How do I use grep command on Linux or Apple macOS/OS X? How can I use grep command on Unix operating systems? Can you give me a simple examples of the grep command?
   
• How to disable ssh password login on Linux to increase security {trending}
  This page explains to you how to generate an ssh key and disable password authentication on the Linux or Unix-based system.
   
• How to: Linux / UNIX create soft link with ln command
  What is a soft (“symbolic”) link? How do I create a soft link (symbolic link) under UNIX or Linux operating system?
   
• Linux Find Out Which Process Is Listening Upon a Port {trending}
  How do I find out running processes were associated with each open port on Linux? How do I find out what process has open TCP port # 111 or UDP port 7000 under Linux using the CLI?