Deepak Prasad

Install Kali Linux tools on Ubuntu with sudo apt install for nmap, sqlmap, nikto, and other hacking tools in Ubuntu repositories. Use Snap when apt has no package. Katoolin is legacy on modern Ubuntu—use a Kali VM when …

Repair Debian after a power outage using a symptom-first decision tree: fix emergency mode and fstab, run fsck on unmounted ext4, reinstall GRUB on BIOS or UEFI, rebuild initramfs, recover interrupted apt/dpkg, and know …

Install Grafana on Ubuntu 25.04 from the official apt.grafana.com repository or a .deb package: import the GPG key, enable grafana-server, open port 3000, log in as admin, and verify with curl and /api/health.

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.

OpenLDAP vs Active Directory in plain language: LDAP protocol vs directory services, OpenLDAP vs LDAPS, Samba AD vs Microsoft AD, cost, GPO, Kerberos, Linux integration, and when to choose each.

C and C++ interview questions and answers for {year}: C pointers and memory, C++ OOP, RAII, smart pointers, STL, move semantics, coding problems, and systems prep.

TypeScript and interview questions on TypeScript for {year}: types, generics, utility types, narrowing, satisfies, strict mode, React/Node prep with elaborate answers.

Operating system and Linux OS interview questions for {year}: processes, threads, scheduling, virtual memory, deadlocks, synchronization, and systems prep with answers.

Interview questions on React JS for {year}: basic React JS questions, experienced hooks and architecture, scenario-based senior prep, React 19, and live coding answers.

DBMS interview questions, basic dbms interview questions, and common dbms interview questions for {year}: ER model, normalization, ACID, transactions, indexing, SQL vs NoSQL, and scenarios with elaborate answers.

React and React JS interview questions and answers for {year}: hooks, Virtual DOM, state, performance, React 19, Server Components, coding challenges, and senior frontend prep.

Computer networks interview questions and computer networks basic interview questions for {year}: OSI, TCP/IP, DNS, HTTP/TLS, routing, NAT, and troubleshooting with elaborate answers.

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 …

Install gpart on Ubuntu with sudo apt install gpart from universe, run a read-only scan when the MBR or partition table is damaged, use gpart on a live USB, and know how gpart differs from the GParted graphical editor.

Apache Kafka interview questions and answers for {year}: topics, partitions, consumer groups, acks, exactly-once, KRaft, and Java Spring Boot integration for experienced developers.

OOP and OOPs interview questions for {year}: four pillars, encapsulation, inheritance, polymorphism, SOLID, design patterns, Java OOPs specifics, and object-oriented design prep.

Install AWS CLI on Ubuntu with the official v2 Linux installer (recommended), sudo apt install awscli from universe, or the Amazon Snap. Configure with aws configure, verify with aws --version and aws sts …

Install Jellyfin on Ubuntu with the official apt repository on 22.04 and 24.04 LTS, or run jellyfin/jellyfin in Docker on Ubuntu 25.04 where noble-repo packages fail dependency checks. Enable systemd, open port 8096, and …

Install Fastfetch on Ubuntu with sudo apt install fastfetch from universe, or use the official GitHub .deb or tarball for the latest release. Configure presets, replace unmaintained Neofetch, and run fastfetch on login.

Apple does not ship iTunes for Linux. On Ubuntu use Apple Music in a browser, Rhythmbox or Amberol for local libraries, or experiment with legacy iTunes 12.x under Wine—expect instability, no iPhone sync, and …

Install the Google Chrome web browser on Ubuntu by downloading the official amd64 .deb from Google, run sudo apt install ./google-chrome-stable_current_amd64.deb, set Chrome as default, update with apt, and compare …

Django interview questions for experienced professionals in {year}: MVT lifecycle, ORM, migrations, middleware, DRF, security, Celery, async Django, and senior production scenario answers.

Install Joplin on Ubuntu with the official GitHub install script, Snap joplin-desktop, or Flatpak net.cozic.joplin_desktop from Flathub—launch the app, create your first notebook, sync notes, and fix libfuse2 AppImage …

Access Google Drive on Ubuntu through GNOME Online Accounts and the Files app, mount with rclone, use google-drive-ocamlfuse from a legacy PPA, or install the commercial Insync .deb—link your Google account and verify …

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 Redis on Ubuntu with sudo apt install redis-server from universe, or add the official packages.redis.io repo for Redis 8.x. Start redis-server with systemd, test with redis-cli ping, set a password, and harden …

Install OpenSSL on Ubuntu with apt (openssl and libssl-dev), verify with openssl version, understand when the distro package is enough versus building from source, and generate a test TLS key and certificate.