Category: Linux
Welcome to the category page. Here, you can find all of our posts we published over the years for a given category. On this page, posts in that particular category are listed in chronological order, from the newest posts at the top to the oldest posts at the bottom.
- Total number of categories: 25
- Available categories:
Linux 30
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How to find the Ubuntu Netboot ISO in 2024
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In the world of Ubuntu installations, the Netboot ISO, also known as the
Continue reading →mini.iso, holds a special place. Although the last official version was released for Ubuntu 18.04 “Bionic Beaver”, the need for such a minimal installation option has not diminished. In this article, we will delve into how to find the Netboot ISO for Ubuntu. We’ll also explore the reasons why you might need this ISO and provide step-by-step instructions on how to download it. -
How to adjust audio volume in OpenWRT and make it permanent
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Ever tried connecting your audio system to a Wi-Fi router running OpenWRT only to find that volume is to low? If you’ve found yourself in this situation, you’re not alone. It’s a frustrating issue, but the good news is that the fix is actually quite simple. Tweaking the volume settings on your Wi-Fi router running OpenWRT will enhance your audio experience. Whether it’s for a more immersive music session or just to get that extra bit of audio clarity, adjusting the volume settings can make a significant difference. In this guide, we’ll explore how to increase the default audio volume from 33% to 60% and ensure that this change remains permanent, even after a reboot.
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How to fix: UFW blocking Internet access on devices connected to Proxy with WireGuard
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Ever tried combining a transparent proxy with a WireGuard VPN client, aiming to secure all local traffic through a remote VPS, only to find that enabling UFW (Uncomplicated Firewall) breaks Internet connectivity? If you’ve found yourself in this situation, you’re not alone. This article unpacks the complexities and offers a simple solution, often overlooked in UFW’s default settings.
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How to fix: No Internet access from WireGuard client and inability to ping server's IP
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Have you ever set up a WireGuard VPN on a local machine and a remote VPS, only to find out that the local machine can’t access the Internet, even though the VPS can? On top of that, neither can ping each other’s IPs? It’s a frustrating issue, but the good news is that the fix is actually quite simple. This article will guide you through the surprisingly easy solution to this irritating problem, which turns out to be a minor setting misconfiguration.
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Securing your home server: Obtaining an SSL certificate for servers not exposed to the Internet
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You’ve set up a nifty home server, perfect for hosting your internal dashboards, file storage, or even your personal blog. There’s just one hiccup—your server isn’t accessible from the Internet. How then do you secure it with an SSL certificate? Fear not! I’ve found myself in a similar situation, and I’ve got a surefire solution for you. In this article, we’ll explore how to use Certbot and the DNS challenge method to get an SSL certificate for a home server that’s not publicly accessible.
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How to properly install Certbot and Certbot-DNS-Cloudflare on Ubuntu and similar OSs
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In the era of cybersecurity, SSL certificates serve as the cornerstone of web security, ensuring encrypted communication between servers and clients. Certbot simplifies this by automating the acquisition and deployment of SSL certificates, while its plugin, Certbot-DNS-Cloudflare, streamlines the DNS validation process for domains managed through Cloudflare. From this article, you will learn how to properly install Certbot and the Certbot-DNS-Cloudflare plugin on Ubuntu and similar operating systems.
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Resolving 'sudo apt update' Errors with the Proxmox Enterprise Repository
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If you’ve been using Proxmox, either the Virtual Environment (PVE) or the Backup Server (PBS), and you don’t have a valid subscription, you’ll consistently encounter a particular error message when attempting a system update using
Continue reading →sudo apt update. This error usually points its fingers at thehttps://enterprise.proxmox.comrepository. Fret not! This guide aims to help you understand this message and provide a way to work around it, especially if you’re using Proxmox without a subscription. -
How to update YouTube-DL to latest version
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YouTube-DL is a fantastic CLI (command-line interface) tool for your daily life and/or work that allows you to download video/audio from YouTube.com and other video hosting websites. I thought that it is updated in the same way as all other parts of the system; using the
Continue reading →sudo apt-get updateand thensudo apt-get upgrade. But when I visited the YouTube-DL’s repository yesterday, I saw that there is a new version available when I use the outdated one. So how do I update my copy ofyoutube-dl? In this tutorial, you’ll learn how to update your copy ofyoutube-dlto the latest released version. -
How to fix: ‘python’: No such file or directory
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Recently, when attempting to use a
Continue reading →youtube-dltool in the Terminal app, I saw an error message saying/usr/bin/env: ‘python’: No such file or directory. In this tutorial, you will learn how to fix the error that leads to this error message. -
Increasing the upload_max_filesize
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The default upload file size for php (and, consequently, for WordPress) is 2 MB, which is a problem if you want to upload a files that’s bigger. Follow these steps if you get this message:
The uploaded file exceeds the upload_max_filesize directive in php.ini
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Upgrading the SVN working copy to new version
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Today I upgraded the Subversion on my computer from 1.6 to 1.7 version. Subversion version 1.7 has a new repository structure and requires to upgrade all existing working copies.
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Antivirus on a Linux machine
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How to, on a Linux machine, using the ClamAV, detect malicious code (trojans, viruses, malware & other malicious threats).
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SSL Certificate automatically by a BASH script
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To quickly and easily create a self-signed SSL certificate for Web servers Apache and Nginx I wrote a little script in “BASH”.
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Full controlling the ASUS router via command line
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How to full controlling the ASUS router with original firmware via a command line by the Telnet access protocol.
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Due to the DoS attack router stops working
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How to fix the issue if, in the logs of the router, you see the message about a DoS attacks and then your ASUS router is down until you reboot it.
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Enable Telnet on the ASUS RT-N12E/LX router
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How to, in the original firmware, on the router Asus RT-N12E/LX, enable the Telnet access protocol, even if the firmware is not supported this function.
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Secure copying files via SSH
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How to, from the terminal, securely transfer data between a local host and a remote host or between two remote hosts.
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Convert many disk image formats to ISO9660 from Terminal
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There are many formats of disk images which is not possible to mount with standard Linux tools. But, with “Iat” tool, we can convert it to ISO format and then mount it with
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Find and delete the zero size files and empty directories
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How to, in the terminal, using the
Continue reading →findutility, find and optionally delete all zero bytes/size/length files and empty directories in the specified directory including subdirectories. -
Find and remove duplicate files from the terminal
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If you have a lot of media files (photo, music etc), then most likely you also have a lot of duplicate files. In this article I’ll show you how to find and remove duplicate files, from the terminal, by using
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Setup Wi-Fi Adapter and Configure Wireless Interface
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I’ll show an example of how to configure a connection to a wireless network from the console of the Debian system by using Wi-Fi Adapter “ASUS USB-N10 Nano” (
Continue reading →ID: 0b05:17ba,Driver: rtl8192cu). -
Connect Raspberry Pi to the WiFi network
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By default the Raspberry Pi uses DHCP to configure its network interfaces, including, on the model B, the built-in ethernet port. In this post I’ll cover how you can set up your Raspberry Pi to automatically connect to your wireless network and obtain a static IP or configure WPA2 using wpa_supplicant. All you need is a WiFi dongle.
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How to fix: ping: unknown host ***.com
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How to fix the issue if you see the message about the host is unknown when attempting to ping a domain name.
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How to fix: Host key verification failed
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When attempting to connect using SSH, the connection may be automatically rejected with the following error:
Host key verification failed
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AFP and Bonjour under Linux
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For quite some time I use my Linux machine as a file and backup server (Mac File Server and Time Machine Volume) for all Mac’s in my network which is accessible from the Finder in Mac OS X.
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BASH aliases
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You can create shortened commands by using aliases. Aliases are very convenient to use for frequently used commands.
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Recursively replace spaces with underscores in file and directory names
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A safe solution to recursively replace spaces with underscores in file and directory names starting from the current directory.
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Creating public/private key authentication for SSH
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If you use ssh to connect to the remote host, one way to ensure the security of the connection is the use of public/private SSH key, because password is not passed across the network and the system is resistant to attacks by “brute force”.
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Clean Linux
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The junk gobbles up our disk space and drags down our Linux machine. From this article you will learn how to clean up junk files and thereby speed up your Linux machine by using the terminal app.
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The graphics in the console Ubuntu
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In the version of Ubuntu 7.10 and above - framebuffer is turned off by default. To enable it we will conduct described below.
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