Linux Tutorials and Command Line Guides - Page 15

Install XCP-ng guest tools on Ubuntu with apt install xe-guest-utilities or the guest-tools ISO from Xen Orchestra; enable xe-daemon, verify management agent detection, and use the ISO when apt lags behind XCP-ng.

Install qbittorrent-nox on Ubuntu from the official PPA or universe repo, accept the legal notice, log in to the Web UI, run it under a dedicated user with the bundled systemd template, open the firewall safely, and fix …

Install Telegram Desktop on Ubuntu with Snap, the official tsetup Linux tarball from desktop.telegram.org, or Flatpak: verify version 6.9.3, launch from the app menu, update with snap refresh, and uninstall cleanly.

Install Steam on Ubuntu with Valve official steam_latest.deb (recommended), sudo apt install steam-installer from multiverse, Snap, or Flatpak. Enable i386 multiarch, install GPU drivers, bootstrap the client on first …

List installed packages on Ubuntu with apt list --installed, dpkg -l, snap list, and apt-mark showmanual. Search one package, count totals, export a list for another machine, and check upgradable packages.

Install qBittorrent on Ubuntu with sudo apt install qbittorrent from universe, the official qbittorrent-stable PPA, or Flathub. Compare GUI vs qbittorrent-nox, avoid outdated Snap builds, accept the legal notice, and …

Install MusicBrainz Picard on Ubuntu from universe apt, the official MetaBrainz Snap, or the MusicBrainz stable PPA: verify with picard -V, tag your first album, and uninstall cleanly.

Install Visual Studio Code on Ubuntu from the official packages.microsoft.com APT repo, a direct .deb download, or Snap: add the Microsoft signing key, install code 1.126, launch with code, and install VS Code Insiders …

Install Plex Media Server on Ubuntu from the official repo.plex.tv APT repository or a .deb download, start plexmediaserver with systemctl, open port 32400, complete setup at http://127.0.0.1:32400/web, and fix plex user …

Install MongoDB 8.0 Community on Ubuntu from the official mongodb-org repo with gpg keyring (jammy/noble/focal), start mongod with systemctl, connect with mongosh, install shell-only for Atlas, and fix libssl1.1, AVX, …

Install Terminator on Ubuntu with sudo apt install terminator from universe (2.1.4 on 25.04), verify with which terminator and dpkg, set the default x-terminal-emulator, split panes with Ctrl+Shift+O/E, and fix DISPLAY …

Install OpenCV on Ubuntu with sudo apt install libopencv-dev python3-opencv (4.10.0 on 25.04), verify with import cv2 and pkg-config opencv4, use pip opencv-python in a venv for newer wheels, or build from source when …

Install Minecraft Java Edition on Ubuntu from the official Minecraft.deb (launcher 2.1.3), openjdk-21-jre-headless, or the Minecraft.tar.gz binary: sign in with a Microsoft account, launch minecraft-launcher, and …

Turn Ubuntu into a NAS server with Samba for SMB/CIFS shares and NFS for Linux clients: install packages, create /srv/nas storage, add smb.conf shares, export NFS to your LAN, open the firewall, and verify with smbclient …

A practical must-have Ubuntu apps list for desktop users: what ships by default, a one-shot apt starter bundle, and curated picks for media, security, dev tools, and gaming on Ubuntu 25.04—with apt, Snap, and Flatpak …

Mount a network drive on Ubuntu over SMB/CIFS or NFS: install cifs-utils, create a mount point, use credentials safely, add fstab entries with _netdev, browse shares in the Files app, and unmount cleanly.

Install Velociraptor on Ubuntu 25.04: download the linux-amd64 binary, generate server.config.yaml, build the Debian server package, enable velociraptor_server, add a GUI admin user, open port 8000 for clients, and …

Remove LibreOffice from Ubuntu with apt purge or the libreoffice* wildcard, autoremove UNO and URE dependencies, delete ~/.config/libreoffice, uninstall from App Center, and confirm no dpkg or desktop leftovers remain.

Free disk space on Ubuntu with apt clean and autoremove, journalctl vacuum, BleachBit previews, and the Ubuntu Cleaner PPA; find large caches with du and Baobab before you delete anything.

Install xoscope on Ubuntu from the universe apt package or build 2.3 from source; enable universe, pull GTK and ALSA dev libraries, work around SourceForge 404 and COMEDI API changes, launch the sound-card oscilloscope, …

Install Modoboa on Ubuntu with the official installer: DNS (MX, SPF, DKIM, DMARC, PTR), Let's Encrypt SSL, domains and mailboxes, webmail and Thunderbird setup, port 25 checks, and common troubleshooting.

Install OnlyOffice Desktop Editors on Ubuntu from the official download.onlyoffice.com APT repo, a direct .deb, Snap, or Flatpak: import the GPG key, install onlyoffice-desktopeditors 9.4, launch desktopeditors, and …

Linux rm has no built-in undo and does not use Trash by default, but you can sometimes recover deleted files—stop writes to the disk first, then try backups, open file handles via /proc, carving tools like Foremost and …

Learn how to build an RPM package in Linux using rpmbuild. Create the rpmbuild directory structure, write a SPEC file, build RPM from source, create RPM from scratch, and verify the package.

Learn how to install fonts in Linux using the command line and GUI. Install TTF and OTF fonts for the current user or system-wide, update font cache, verify with fc-list, and uninstall fonts.

Understand various terminologies with linux memory management, dirty page, swapping, inactive, active memory, Translation Lookaside Buffers (TLB), page cache

Step-by-Step Tutorial to configure hugepages in red hat and centos 7/8 linux using vm nr_hugepages in /etc/sysctl.conf. Also configure hugepages pool using hugeadm

Learn how to check Transparent HugePages in Linux, verify if THP is enabled or disabled, understand AnonHugePages vs static hugepages, and find per-process THP usage.

Compare HugePages (static HugeTLB) and Transparent HugePages in Linux: what each is, when to use or disable them, how to check and configure them, how Kubernetes exposes hugepages-2Mi and hugepages-1Gi, and how to …

Even though containers are valuable in the current software development trends, realizing containerized deployments in organizations is not easy. This article