MPlayer is largely unmaintained; mpv is the actively developed fork that replaced it. Most MPlayer subtitle commands work in mpv with minor syntax adjustments. This guide covers both. External Subtitle Files Handling Character Encoding Chinese subtitle files often display as garbage when the player guesses the encoding wrong. Specify the correct codepage explicitly. For an…
When you open a Windows file in Vim (or Neovim), you’ll often see ^M characters at the end of lines. These are carriage returns (\r) from Windows line endings (CRLF), which don’t display properly on Unix-like systems that expect LF-only line endings. Quick Fix The fastest way to remove these characters is with a substitution…
Fedora 中文字体的显示一直是个常见问题，特别是在英文环境中。通过合理的字体配置，可以获得清晰舒适的中文显示效果。本文介绍的方案使用开源字体，这些字体在 Fedora 的标准仓库中都可以获得。 快速配置 如果你只想快速完成配置，运行以下命令： sudo dnf install cjkuni-ukai-fonts cjkuni-uming-fonts sudo wget https://raw.githubusercontent.com/zma/config_files/master/others/local.conf \ -O /etc/fonts/local.conf 这会安装文鼎楷体和文鼎明体，并配置字体渲染优先级。注销后重新登录即可生效。 推荐字体包 Fedora 仓库中提供了多个中文字体包： 基础中文字体： # 文鼎明体 — 适合正文阅读，清晰度高 sudo dnf install cjkuni-uming-fonts # 文鼎楷体 — 适合标题和打印 sudo dnf install cjkuni-ukai-fonts Google Noto 字体（推荐）： # Noto Sans CJK — 现代、清晰、覆盖全面 sudo dnf install google-noto-sans-cjk-fonts # Noto Serif CJK…
Git and SSH integrate seamlessly for version control infrastructure. An SSH-based Git server works well for small teams where all members are trusted and have administrator-level access to all repositories. This approach is straightforward to deploy, but lacks fine-grained access control. For teams that need role-based repository access or audit trails, consider dedicated tools like…
Installing NVIDIA drivers on Fedora is straightforward when using RPM Fusion repositories. This guide covers modern Fedora releases (39+) using DNF package management. Prerequisites Before starting, determine which driver your GPU requires. Check the NVIDIA driver download page or use this command to identify your GPU: lspci | grep -i nvidia For newer GPUs (Maxwell…
ISO images are sector-by-sector copies of optical media stored as binary files. They’re useful for archiving DVDs or creating portable copies without keeping physical disks around. On Linux, several tools can accomplish this—dd is the simplest, but modern alternatives offer better features. Using dd to Create an ISO Image The most straightforward approach uses dd:…
Compiz Fusion is a lightweight 3D window manager and compositing system that can replace your standard window manager. While it’s rarely the default choice on modern Fedora installations, it remains available for users who want its visual effects and functionality. Note: Compiz development has slowed significantly. Most Fedora users today use Wayland-based desktops (GNOME, KDE…
DNS lookups can be a bottleneck in Firefox browsing performance. Here are practical methods to optimize DNS resolution and related network behavior. Disable IPv6 (if not needed) If your network doesn’t use IPv6, disabling it can eliminate unnecessary lookup delays. In Firefox, navigate to about:config and set these preferences: network.dns.disableIPv6 → true This prevents Firefox…
The default number of loop devices on most Linux systems is 8, which is often insufficient for scenarios like running multiple virtual machines with loop device-backed storage, containerized environments, or disk image management. If you need more than the default allocation, you’ll need to increase max_loop. First, check your current loop device count: losetup -f…
To connect to HKUST’s sMobileNet wireless network via NetworkManager, you’ll need to configure WPA2 Enterprise authentication with PEAP. This guide covers the required settings. Network Settings Configure the following parameters in NetworkManager: Basic Settings: SSID: sMobileNet Wireless security: WPA & WPA2 Enterprise Authentication method: Protected EAP (PEAP) Authentication Details: Anonymous identity: (leave empty) PEAP version:…
Xen remains a robust hypervisor for production environments—AWS EC2, Citrix Hypervisor, and many hosting providers still rely on it. However, KVM has become the default for most Linux distributions due to simpler management and better integration with standard tooling. For new deployments on standard Linux, evaluate KVM with libvirt or container solutions like Docker and…
Configuring proper Chinese character rendering in Fedora requires attention to font selection and system settings. This guide covers configuration for contemporary Fedora/RHEL systems where you run an English locale but need reliable Chinese character display. Font Selection You have several solid open-source options for Chinese fonts. Each has different characteristics suited to different use cases….
Customizing your desktop environment to match macOS aesthetics remains popular on Linux, though the approach differs significantly from GNOME 2 era configurations. Modern desktop environments like GNOME (40+) and KDE Plasma (5/6) use different theming systems, but achieving an Apple-inspired look is still straightforward. Current Desktop Environment Options GNOME 40+ uses CSS-based theming and GTK…
Converting audio tracks from video files is useful for extracting soundtracks, creating audio-only versions for podcasts, or generating files optimized for audio playback. While MPlayer was historically used for this task, ffmpeg is now the standard tool—it’s actively maintained, more efficient, and handles both extraction and encoding in one step. Installation Install ffmpeg on your…
Free virtualization on Linux has multiple solid options. While VMware Player is still available, QEMU combined with libvirt has become the standard approach for most sysadmins. This guide covers creating VM disk images and configurations that work across multiple hypervisors. Creating Virtual Disk Images The first step is creating a virtual disk. QEMU’s qemu-img tool…
Modern GNOME uses dconf as its configuration backend, replacing the older GConf system. Whether you’re managing a single workstation or deploying across multiple systems, understanding dconf and gsettings is essential for customizing GNOME environments efficiently. Understanding the Configuration Stack GNOME’s configuration hierarchy works like this: dconf — the low-level database storing all settings gsettings —…
Mounting an ISO on Linux requires a loop device. Modern systems support this directly with mount: sudo mount -o loop /path/to/image.iso /mnt/mount-point Or use the -t iso9660 option for explicit filesystem specification: sudo mount -t iso9660 -o loop /path/to/image.iso /mnt/mount-point To unmount: sudo umount /mnt/mount-point For temporary mounts that don’t require persistence across reboots, consider…
Crontab controls what runs and when. Each crontab entry has this format: .—————- minute (0-59) | .————- hour (0-23) | | .———- day of month (1-31) | | | .——- month (1-12) OR jan,feb,mar,apr … | | | | .—- day of week (0-6) (Sunday=0 or 7) OR sun,mon,tue … | | | | |…
File compression is a routine task in Linux administration. You’ll encounter several tools, each with different tradeoffs between compression ratio, speed, and compatibility. This guide covers the most common compression formats: gzip, bzip2, 7z, xz, and zip. The examples below assume you’re compressing a directory called dir. Each tool supports compression level options — you…
MapReduce remains a foundational programming model for processing large-scale distributed datasets, though its role has evolved alongside modern data processing frameworks. Hadoop implementations and other MapReduce systems require objective performance evaluation to guide infrastructure decisions and optimization efforts. PUMA (Princeton University MapReduce Benchmark) is a comprehensive benchmark suite developed by Faraz Ahmad and colleagues to…