How to schedule a recurring task using cron?
To set up periodic tasks using Linux cron, first open the crontab editor and enter the command crontab-e (use sudocrontab-e for system-level tasks); secondly, master the five-segment cron expression, such as 306* means to execute tasks at 6:30 every day; then optionally set environment variables and logging to avoid execution problems, such as defining SHELL, PATH and LOGFILE, and redirecting the output to the log; finally view the task through crontab-l and clear the task through crontab-r. If the task is not executed, you can view the system log to troubleshoot problems.
Jun 20, 2025 am 12:14 AM
How to check if a specific port is open and listening?
To confirm whether a specific port is open and listen, 1. Use sudonetstat-tuln|grep: or sudoss-tuln|grep: on Linux/macOS; 2. Run netstat-an|findstr: on Windows; 3. Check that the remote host can use telnet or nc-zv to test the connection, and if successful, the port will be open. These methods can effectively determine the listening status of local or remote ports.
Jun 20, 2025 am 12:06 AM
How to Compress a Video on Mac
Video files take up more space on average than music, photos, documents, and almost any other type of file you might keep on your Mac. In an era of 4K screens and smartphone cameras, these file sizes allow us to enjoy i
Jun 19, 2025 am 11:01 AM
How to Install OpenSSH Server from Source in Linux
OpenSSH is a free and open source, full implementation of the SSH protocol 2.0, which provides a number of tools for securely accessing and managing remote computer systems, and managing authentication keys, such as ssh (a secure replacement for teln
Jun 19, 2025 am 10:50 AM
iOS 15.7.1 & iPadOS 15.7.1 Released with Security Updates
Apple has released updates for iPhone and iPad users who continue to run the iOS 15 and iPadOS 15 operating systems. The updates are versioned as iOS 15.7.1 and iPadOS 15.7.1 for iPhone and iPad, respectively. These updates are available separately f
Jun 19, 2025 am 10:48 AM
iOS 16.1 RC & iPadOS 16.1 RC Released for Beta Testers
Apple has made available the release candidate (or golden master) versions of iOS 16.1 and iPadOS 16.1 for participants in the beta testing programs for iPhone and iPad system software.Release Candidate (RC) versions are generally the last stage in a
Jun 19, 2025 am 10:45 AM
Gogo - Create Shortcuts to Directory Paths in Linux
Gogo is a remarkable tool to bookmark directories inside your Linux shell. It helps you create shortcuts for long and complex paths in Linux. This way, you no longer need to type or memorize lengthy paths on Linux.For example, if there's a directory
Jun 19, 2025 am 10:41 AM
How to Show Word Count in Pages for Mac
Want to know the word count of a Pages document you’re working on from the Mac?Keeping track of word counts is often essential for writers, authors, students, and many other professions, so it’s natural to want to know how to see the word count of do
Jun 19, 2025 am 10:40 AM
How to Turn Off Focus Mode on iPhone
Focus Mode is a feature created to help iPhone users concentrate on tasks by silencing and hiding notifications, messages, calls, and other alerts. Previously known as Do Not Disturb Mode, the feature was straightforward. However, Apple has introduce
Jun 19, 2025 am 10:39 AM
MimiPenguin - Dump (Hack) Login Passwords of Linux Users
MimiPenguin is a free and open source, simple yet powerful Shell/Python script used to extract login credentials (usernames and passwords) from the current Linux desktop user. It has been tested across various Linux distributions.Moreover, it support
Jun 19, 2025 am 10:35 AM
How to Set Different Wallpaper for Home Screen & Lock Screen on iOS 17 & iOS 16
Want to set a different wallpaper for iPhone Home Screen than from the Lock Screen in iOS 17 and iOS 16? You can do that, though how you set different wallpapers for the Home Screen and Lock ScreenYou may have noticed that when you set an image as yo
Jun 19, 2025 am 10:34 AM
Conky - The Ultimate X-Based System Monitor Tool
Conky is a free, lightweight, simple, and customizable system monitor for X that displays any kind of information on your desktop or within its own window. Since it's cross-platform, it can also be used with Wayland and macOS.Conky provides over 250
Jun 19, 2025 am 10:33 AM![Can You Play Sims 4 on Mac? [System Requirements & How to Install?]](https://img.php.cn/upload/article/001/242/473/175029985797202.png?x-oss-process=image/resize,m_fill,h_135,w_240)
Can You Play Sims 4 on Mac? [System Requirements & How to Install?]
You can play Sims 4 on Mac, but it’s important that you understand how the system requirements may be different from what you’re used to. You can play via Origin.System requirements for Sims 4 on MacTo make Sims 4 compatible with your MacBook, you ne
Jun 19, 2025 am 10:24 AM
How to Find Word Count for Pages Documents on iPhone & iPad
Wondering how many words are in your Pages document? Knowing the word count is useful for managing content length, whether it's for academic, professional, or personal use. While this feature is highly requested, it’s not enabled by default in the Pa
Jun 19, 2025 am 10:22 AM
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