How to find all files larger than 100MB?
To find files larger than 100MB in different operating systems, the specific methods are as follows: 1. In Windows, you can enter size:>100MB through the search box of the File Explorer for searching, or use the PowerShell command Get-ChildItem to cooperate with Where-Object filtering; 2. Linux/macOS uses the find command, such as find/path-typef-size 100M, and can also be further sorted and viewed in combination with ls and sort; 3. Precautions include avoiding search from the root directory, paying attention to unit distinction, handling permission issues, and slow Windows search. These methods cover efficient search methods for mainstream systems.
Jul 14, 2025 am 01:39 AM
How to see which groups a user belongs to?
Use groups or id commands to view user groups in Linux or Unix systems; view them through the Groups part of the user profile in social platforms such as Facebook or LinkedIn; view them through the administrator interface or user profile in collaboration tools such as Slack or Microsoft Teams. Different systems have different methods and are restricted by permissions and privacy settings.
Jul 14, 2025 am 01:28 AM
What is the Linux boot process from power-on to login prompt?
After pressing the power button, the startup process of the Linux system starts with BIOS/UEFI initialization, and then the kernel and initrd are loaded by the bootloader (such as GRUB2), and the kernel is initialized and systemd is started, and the login interface is finally displayed. The specific steps are as follows: 1. BIOS or UEFI execute POST and select the startup device; 2. GRUB2 loads the kernel and initrd; 3. The kernel initializes the hardware and mounts the root file system, and starts systemd; 4. Display text login prompts or graphical display manager according to the run level. The entire process is a complete startup sequence from hardware self-test to user login status.
Jul 14, 2025 am 01:00 AM
What is the difference between a process and a thread?
The core difference between a process and a thread lies in the way resource management and execution. 1. Processes are execution instances of programs, with independent memory space and resources, isolated from each other, improving stability and security; 2. Threads are execution units within the process, sharing memory and resources of the same process, communication is more efficient, but data consistency needs to be handled with caution; 3. Creating processes is expensive and switching is high, while threads are lightweight, creating and switching are faster; 4. Processes are suitable for scenarios that require strong isolation, and threads are suitable for tasks that frequently collaborate. When choosing, the isolation and efficiency requirements should be weighed.
Jul 14, 2025 am 12:52 AM
How to create temporary files securely in a script?
To create a secure temporary file, you need to use the mktemp command, 1. Use tmpfile=$(mktemp) to create a unique file; 2. Use tmpdir=$(mktemp-d) to create a temporary directory; 3. Avoid manually splicing file names or using fixed paths; 4. Set chmod600 to restrict access permissions; 5. Use trap'rm-f"$tmpfile"'EXIT to ensure the cleaning of residual files, thereby preventing permission leakage, file conflicts and attack risks.
Jul 14, 2025 am 12:38 AM
What is a VPN and how does it work?
A VPN is a service that protects data by encrypting internet traffic and routing it to a remote server. Its working principle includes: 1. The data is encrypted on the device; 2. The encrypted data is transmitted to the VPN server through a secure tunnel; 3. The server decrypts the data and sends it to the network; 4. The data responded by the website is returned to the server and encrypted again, and is transmitted back to the device through the tunnel. Reasons for use include: 1. Protect privacy and prevent tracking of ISPs, advertisers and hackers; 2. Provide secure connections under public Wi-Fi; 3. Bypass censorship or geographic restrictions; 4. Support remote work. When choosing, you should pay attention to: 1. Strong encryption standards such as AES-256; 2. No log policy; 3. Multi-country server distribution; 4. Speed and device compatibility; avoid exemption
Jul 14, 2025 am 12:36 AM
How to Install LEMP Stack on Rocky Linux 8
LEMP is a popular stack that comprises open-source software that is collectively used to host and serve web applications, whether in production or any stage along the development cycle. The terminology LEMP is an acronym for Linux, Nginx (pronounced
Jul 13, 2025 am 09:22 AM
How to Install ONLYOFFICE Desktop Editors in Linux
ONLYOFFICE Desktop Editors is an open-source productivity suite that supports Linux, Windows, and macOS platforms. It's freely available under the AGPLv3 license and includes three core applications for editing text documents, spreadsheets, and prese
Jul 13, 2025 am 09:18 AM
How to Verify PGP Signature of Downloaded Software on Linux
When it comes to installing software on a Linux system, the process is typically straightforward. Most of the time, you'll rely on a package manager like apt, dnf, or Pacman to safely install software from your distribution's repositories.However, th
Jul 13, 2025 am 09:16 AM
How to Install and Use ProtonVPN on Desktop Linux
A VPN (Virtual Private Network) is an encrypted tunnel that extends over a public network. It allows users to securely browse and access resources over an internet connection with utmost privacy and confidentiality. [ You might also like: 13 Best VPN
Jul 13, 2025 am 09:12 AM
How to Install PHP 8.0 on Rocky Linux and AlmaLinux
PHP 8.0 officially launched on November 26, 2020, and represents a major upgrade from PHP 7.4. At the time of writing this guide, the most recent stable version is PHP 8.0.8, released on July 1, 2021.This release introduces several key enhancements a
Jul 13, 2025 am 09:11 AM
How to Install LAMP Stack on Rocky Linux 8
LAMP is a popular stack used in development circles for hosting both static and dynamic web applications. It’s an acronym for Linux, Apache, MySQL (or MariaDB) & PHP. Notably, it comprises the Apache web server, MySQL or MariaDB database server,
Jul 13, 2025 am 09:10 AM
How to Install NodeJS 14 / 16 & NPM on Rocky Linux 8
Built on Chrome’s V8 engine, Node.JS is an open-source, event-driven JavaScript runtime environment crafted for building scalable applications and backend APIs. NodeJS is known for being lightweight and efficient due to its non-blocking I/O model and
Jul 13, 2025 am 09:09 AM
How to Install OwnCloud to Create Own Cloud Storage in Linux
Cloud storage stands for a virtualized pool of network storage most commonly hosted by third parties. Cloud storage is a network-based service that physically does not exist but remains somewhere in the cloud. To be more clear, cloud storage means sh
Jul 13, 2025 am 09:08 AM
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