How to use the find command to locate files by name, size, or modification time?
The find command is used in Linux or macOS to find files according to file name, size, modification time and other conditions. 1. Search by file name: Use the -name parameter to match the complete or partial file names, support wildcards and regular expressions, and -name ignores case; 2. Search by file size: Locate files by the -size parameter in combination with units (c/k/M/G), such as 100M represents files larger than 100MB; 3. Search by modification time: -mtime (content modification), -atime (access time), and -ctime (status change) can filter files by number of days, supporting combination conditions. Mastering these basic usages can efficiently handle file tasks.
Jun 25, 2025 am 12:19 AM
What is the PATH environment variable and how do you modify it?
ThePATHenvironmentvariabletellstheoperatingsystemwheretolookforexecutableprogramswhenrunningcommandsfromtheterminal.1.Itcontainsalistofdirectoriesseparatedbycolons(onUnix-likesystems)orsemicolons(onWindows).2.Whenyouenteracommand,thesystemsearchesthe
Jun 25, 2025 am 12:14 AM
What are best practices for writing maintainable shell scripts?
Five key points are required to write a maintainable shell script: 1. Declare the interpreter at the beginning and enable the set option to improve robustness; 2. Use meaningful variables and function names to enhance readability; 3. Add comments reasonably and use getopts to process parameters to improve usability; 4. Separate configuration and logic for easy adjustment; 5. Modular functions improve reusability and structural clarity. Each shell script should start with #!/bin/bash or #!/bin/sh, and discover problems early through set-e, set-u and set-opipefail; avoid fuzzy variable names such as a when naming, and it is recommended to use log_file and other names that clearly express the intention; functions such as backup_config() can be added
Jun 25, 2025 am 12:14 AM
What is the difference between CMD and ENTRYPOINT in a Dockerfile?
CMD and ENTRYPOINT are used in Docker to set the default command and fixed entry point when container starts. CMD provides default commands that can be overwritten, suitable for scenarios where flexible running mode is required; ENTRYPOINT executes specific commands regularly, and runtime parameters will be appended thereafter, suitable for ensuring that certain initialization steps or main process are always executed. The two can also be used in combination to take into account flexibility and control. The choice is based on the degree of flexibility or consistency of the desired container behavior.
Jun 25, 2025 am 12:05 AM
Introduction to Linux? and How Does Linux Work?
In this article, we explore what Linux is and some of the attributes and components associated with the Linux operating system. What Is Linux? Linux is an open-source, community-developed operating system with the kernel at its core, alongside other
Jun 24, 2025 am 10:50 AM
Stop Obsessing Over FPS—Why Good-Enough Hardware Is the Future of Gaming
I tried firing up Satisfactory on my Chromebook and the menu was running at 10 to 15 FPS at the lowest possible settings. The graphics really didn’t look all that bad, but the FPS made me say, “This isn’t worth playing.” So, yes, FPS does matter i
Jun 24, 2025 am 10:45 AM
Scrcpy - Control Your Android Device via Linux Desktop
Brief: This guide shows how to install scrcpy an application that helps you connect, display and control an android device from your Linux desktop computer.Scrcpy (pronounced “screen copy“) is a free, open-source, and cross-platform utility used to d
Jun 24, 2025 am 10:37 AM
How to Burn a CD in macOS Monterey / Big Sur
Want to burn a CD on your modern Mac with macOS Monterey or Big Sur using the Music app? It's definitely possible!That's right, you can still burn CDs on your modern Mac, so step out of the shadows and get ready, because we're diving into how to crea
Jun 24, 2025 am 10:35 AM
8 Tips for New MacBook Pro 14″ & 16″ Owners
Get a fancy new MacBook Pro 14″ or 16″ model with the powerful M1 Pro or M1 Max chip? These are feature packed laptops with plenty of oomph, and there are also some unique aspects to the hardware. Let’s take a look at some specific tip
Jun 24, 2025 am 10:27 AM
Remove Dictation Button from Safari Address Bar on iPhone & iPad
You might have noticed a microphone button in the address bar of Safari on iPhone or iPad, and tapping this microphone icon activates dictation, which converts your voice into text.Some users may unintentionally tap the microphone dictation button in
Jun 24, 2025 am 10:23 AM
How to Clear Steam Download Cache on Mac
Do your downloads on Steam keep getting stuck? Or are your installed games not working properly? You can usually fix these issues in no time at all by clearing Steam’s download cache on Mac in the Preferences.The download cache is a hidden folder on
Jun 24, 2025 am 10:22 AM
How to Use 'sleep' Command to Delay Linux Command Execution
Brief: In this guide, we will discuss practical examples of sleep commands. After following this guide, Linux programmers will be able to use the sleep command to write robust shell scripts. Linux programmers and system administrators prefer to write
Jun 24, 2025 am 10:21 AM
20 Screen Command Examples to Manage Linux Terminals
Brief: In this guide, we will discuss some useful examples of the screen command. By the end of this guide, users will be able to work with multiple shell sessions using a single Linux terminal window. As Linux users, we often need to work on long-ru
Jun 24, 2025 am 10:19 AM
6 Deprecated Linux Commands and Alternative Tools for Linux
Linux provides tons of command-line utilities to perform various tasks. However, with the passage of time, some of these tools have become outdated and replaced by other alternative command-line tools. In this guide, we will highlight 6 deprecated Li
Jun 24, 2025 am 10:16 AM
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