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regex [[ $line =~ [[:space:]]*(a)?b ]] or pattern='[[:space:]]*(a)?b' [[ $line =~ $pattern ]] if if test-commands; then consequent-commands; [elif more-test-commands; then more-consequents;] [else alternate-consequents;] fi if some_comman...

File permissions in Linux are coded symbolically (as letters) r - read w - write x - execute And Numerically: 4 - read 2 - write 1 - execute dir permissions Octal del rename create files dir list read files contents write file conten...

Step 1: Check the Current Status of iptables Before making any changes, it’s a good practice to check the current status of iptables. sudo iptables -L -v This command will list all the current rules set in iptables. Step 2: Flush All iptables Rules To dis...

Introduction Cron is a time-based job scheduling daemon found in Unix-like operating systems, including Linux distributions. Cron runs in the background and operations scheduled with cron, referred to as “cron jobs,” are executed automatically, making cron us...

To add Pi-hole to Nginx Proxy Manager, you can follow these steps: Login to Nginx Proxy Manager: Open your web browser and navigate to your Nginx Proxy Manager dashboard. Add Proxy Host: Click on the "Proxy Hosts" tab on the left sidebar and then cli...

By default the first user's account is an administrative account, so if the UI is prompting you for a password it's probably that person's user password. If the user doesn't remember their password you need to reset it. To do this you need to boot into recover...

Configuring User E-mail Address In a web browser, navigate to the Proxmox web UI and login Select Datacenter > Permissions > Users from the left navigation menus Double click the user to configure Complete the E-mail field on the Edit User form > Click O...

Scraped from https://www.howtogeek.com/1287/reset-your-forgotten-ubuntu-password-in-2-minutes-or-less/   If you've ever forgotten your password, you aren't alone... it's probably one of the most common tech support problems I've encountered over the years ...

Ubuntu has systemd-resolved listening on port 53 by default. In case you want to run your own DNS server, you can't because port 53 is already in use, so you'll get an error similar to this: "listen tcp 0.0.0.0:53: bind: address already in use".This article ...

If you are using docker there is an easier way to reset the password of AdGuardHome. By using an apache docker image instead of installing apache2 on a server: By using this command to call htpasswd from an Apache docker image. docker run httpd:2.4 htpasswd ...

Introduction A .tar.gz file is a compressed archive format commonly used in Linux systems. The format combines multiple files and directories into a single file while reducing their size. It uses tar for archiving and gzip for compression. Knowing how to unz...

Introduction The GNUtar (short for Tape ARchiver) command is the most widely used archiving utility in Linux systems. Available directly in the terminal, the tar command helps create, extract, and list archive contents. The utility is simple and has many hel...

Introduction The find command allows you to search for a specific string of characters using your Linux command-line interface. It is a highly practical tool as it is not limited to file names. You can use it to search a specific location, add options to cont...

Introduction Copying files and directories in Linux is an essential administrative task. Copies are instrumental for backing up important files or transferring them to a different location, for example, a data storage device. The cp command is useful for bas...

This will allow a Jellyfin instance to run in an unprivilidged LXC Container with an iGPU passed into it. Either as an install or in a Docker image. On the Proxmox Host System Find Device Numbers ls -l /dev/dri Find Group Numbers cat /etc/group Add Group...

You can check the Wi-Fi signal strength to find out the connection performance, and in this guide, you'll learn the steps to perform this task on Windows 10. On Windows 10, when you connect a device to the internet to work from home or office using a Wi-Fi ...

Estimated reading time: 1 min Install Qemu guest agent for Debian/Ubuntu In this article, we will help you to install the Qemu guest agent on your virtual private server. This agent is a helper daemon that exchanges information between the quest and ...

Running and managing containers on Linux may sound like a daunting task, and to be fair, it can be. For those of you that want to run containers and do so on a platform that’s easy to get started with, then look no further than Portainer! In this video Jay goe...