HP printers work reasonably well on Linux, though the setup process varies depending on whether you have a network printer or a USB-connected device. Here’s what you need to know. Install HPLIP HPLIP (HP Linux Imaging and Printing) is the main driver package for HP printers. Install it along with the GUI configuration tool: sudo…
When you need to completely wipe a USB drive on Windows, you have several reliable options. Choose based on your security requirements: Disk Management for quick reformatting, DiskPart for automation, or secure erasure tools if the drive contained sensitive data. Using Windows Disk Management The simplest built-in approach: Connect the USB drive Open Disk Management…
UDP packet loss on Linux commonly stems from undersized kernel buffers. When packets arrive faster than the application can process them, the kernel drops excess datagrams silently. Unlike TCP, UDP offers no retransmission, so these losses are permanent. Proper buffer tuning is essential for DNS servers, NTP, monitoring systems, video streaming, and any high-throughput UDP…
When processing text files or command output, non-printable ASCII characters corrupt formatting, break parsing, or create unexpected behavior. You need the right tool for your specific case — whether you’re stripping control characters, handling UTF-8, or cleaning up embedded escape sequences. Understanding Printable ASCII The standard printable ASCII range includes: Tab (hex 09) Line Feed…
Eclipse CDT has evolved to handle CMake projects effectively. The key is understanding which approach fits your workflow — native CMake integration (recommended for 2023+ versions) or generating build files. Native CMake Integration (Recommended) Eclipse CDT 2023 and later include robust native CMake support. This is the simplest approach for new projects or when you…
IBus daemon restarts aren’t always straightforward in GNOME, especially since menu options have been removed. You’ll need to kill the daemon and start a fresh one. Quick restart Kill the current IBus daemon: pkill -o ibus-daemon The -o flag terminates only the oldest process, which is typically the main daemon (not child processes). IBus usually…
Emacs handles line ending conversions through its buffer coding system. Whether you’re converting CRLF (DOS/Windows) to LF (Unix) or the reverse, the process is straightforward. DOS to Unix (CRLF to LF) Open the file in Emacs and run: M-x set-buffer-file-coding-system RET undecided-unix Or use the keyboard shortcut: C-x RET f undecided-unix Then save the file:…
The simplest approach is to select text and run untabify: M-x untabify This replaces all tabs in the selected region with spaces, preserving column alignment. If no region is active, Emacs prompts you to define one. Convert the Entire Buffer Select all content, then run untabify: C-x h M-x untabify C-x h selects the whole…
Aggregating multiple RSS feeds into a single source is essential for monitoring diverse content — whether tracking news, blogs, project updates, or monitoring systems. Here are the practical approaches with working examples for 2026. Self-Hosted Feed Readers Miniflux is the modern standard for self-hosted feed aggregation. Written in Go, it’s lightweight, actively maintained, and provides…
IEEE requires a specific format for web citations, and BibTeX handles this cleanly with the @online entry type. Here’s how to get it right. IEEE Web Citation Format IEEE specifies this pattern for online sources: [#] Initial(s). Surname, “Title [Online]. Available: URL. Accessed: Month Day, Year.” A complete example looks like: [1] J. Jones, “Networks…
When debugging a program or understanding what it actually touches on your filesystem, you need to see which files it opens. Two tools do this well: strace traces system calls in real time, while lsof inspects a running process without the overhead. Using strace to capture file operations The simplest approach is to run strace…
The split command is the standard tool for breaking large text files into smaller chunks on Linux. Here’s the basic syntax: split -l 1024 content.txt splitted-content.txt- This creates output files named splitted-content.txt-aa, splitted-content.txt-ab, and so on, with each containing 1024 lines. Understanding output naming By default, split appends two-character suffixes starting with aa. The naming…
Memory leak detection is critical for C program reliability. Several tools work at different stages of development—compile time, runtime, and production scenarios. Your choice depends on performance tolerance, integration needs, and how much detail you require. AddressSanitizer (ASan) AddressSanitizer is the first tool to reach for in 2026. It’s compiler-integrated, fast, and catches a broader…
If you’re running a dual-boot system with Windows, you’ll need to configure which operating system loads by default. The method depends on your Windows version and whether you’re using legacy BIOS or UEFI firmware. Windows 7 and Vista: System Properties Method For Windows 7 systems using the traditional boot manager: Open Control Panel and navigate…
Fedora upgrades are straightforward with dnf system-upgrade, the standard tool for network-based distribution upgrades. This replaces the older fedup tool and handles everything from downloading packages to managing the upgrade environment. Pre-Upgrade Checklist Before starting any upgrade: Update your current system: sudo dnf upgrade Back up critical data — especially /etc, home directories, and application…
Exit codes are how programs communicate success or failure to the shell and parent processes. Understanding them is essential for writing reliable scripts and debugging applications. Linux and Windows handle these differently, so knowing both conventions matters if you work across platforms. Linux Exit Codes On Linux, the convention is simple: 0 means success, 1–255…
Bash doesn’t have a goto statement, and that’s intentional. The language is designed to encourage cleaner control flow patterns that are easier to debug and maintain. When you feel the urge to jump around in your script, there’s almost always a better approach. Functions and Early Return The cleanest pattern is extracting logic into functions…
Writing effective paper reviews is essential work in academic fields like information retrieval, machine learning, systems research, and most technical disciplines. Whether you’re reviewing for a conference, journal, or internal research group, the goal is the same: provide constructive, specific feedback that helps authors improve their work and helps decision-makers assess contribution. What Makes a…
A4-sized PDFs—particularly technical papers and academic documents—render poorly on Kindle devices. The small fonts become nearly unreadable, and Amazon’s “Send to Kindle” feature often destroys formatting in the process. You need a tool designed specifically for this workflow. Why Standard Conversion Fails Amazon’s email-to-Kindle conversion assumes reflowable text content. Technical papers with multi-column layouts, equations,…
When your OCaml program crashes with Fatal error: Exception “Stack_overflow” but doesn’t tell you where the problem originated, you need to enable backtrace reporting. The process is straightforward but requires recompilation. Enable Debug Symbols and Backtraces First, recompile your program with the -g flag to include debug information: ocamlopt -g -o myprogram myprogram.ml If you’re…