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How to open ports on mac os firewall

macOS does not open ports through traditional firewall interfaces, but is controlled through application-level firewalls; to open specific ports, applications must be allowed to configure rules through firewalls or using the pf command line tool. 1. Understand the behavior of macOS firewall: The system comes with a firewall that is controlled only according to the application rather than the port, and does not directly provide port opening function. 2. Allow the application to pass the firewall: Add the application in the system settings and enable "Allow inbound connections" so that the application can receive traffic from the specified port. 3. Open port with pf: Use the sudopfctl command to open ports such as 8080 by creating /etc/pf.anchors rule file and modifying /etc/pf.conf configuration. 4. Make the pf rule hold

Jul 29, 2025 am 02:07 AM

Why can't I install this software

The inability to install software is usually caused by several common reasons, and most of them can be solved. 1. Check whether the system meets the minimum configuration requirements, including operating system version, memory, hard disk space and processor type, and check according to official requirements; 2. Run the installation program as an administrator to ensure that you have sufficient permissions, especially on work or school computers; 3. If the downloaded installation package is damaged or incomplete, download the file checksum again from the official; 4. Temporarily close the security software or other background programs that may interfere with the installation to confirm whether there is a conflict. If the above method is invalid, you can try to search for specific error information to find a targeted solution.

Jul 29, 2025 am 02:06 AM

How to change theme in Sublime Text

OpenCommandPaletteusingCtrl Shift P(Windows/Linux)orCmd Shift P(macOS),type"UI:SelectTheme"andselectittoaccessavailableUIthemes.2.ChooseaUIthemefromtheleftcolumntocustomizetheinterfaceliketabsandsidebar,andpreviewwitharrowkeysbeforepressing

Jul 29, 2025 am 02:05 AM

How to install CentOS

ChooseCentOSStream9forarolling-releaseorAlmaLinux/RockyLinuxforstableRHEL-compatiblealternatives.2.CreateabootableUSBusingRufus(Windows)ordd/BalenaEtcher(macOS/Linux)withthedownloadedISO.3.BootfromUSBbyconfiguringBIOS/UEFIsettingstoprioritizetheUSBde

Jul 29, 2025 am 01:52 AM

How to use Focus modes on Mac

To efficiently use macOS's "focus mode", first create or edit preset modes in "System Settings" → "focus mode" and set the time period, then select the notification mute and lock screen content hiding options, then set the source of notifications allowed to pass such as specific contacts, apps, or repeated reminders, then configure automatic triggering methods such as calendar events, apps opening or Wi-Fi connection, and finally enable synchronization on iPhone to keep the rules of multiple devices consistent. Reasonable settings can improve work efficiency and attention.

Jul 29, 2025 am 01:47 AM

Satechi SM3 keyboard review: a smooth, responsive mechanical keyboard

Quick Overview Expert Rating Advantages of solid and responsive mechanical keyboards Competitive price Can connect four different devices simultaneously Support switching between macOS and Windows systems Disadvantages Battery performance Only American keyboard layouts are available The backlighting effect will consume significantly Power Editor Comment Although battery life needs to be improved and the support of American layouts only limits its global applicability, the Satechi SM3 shows a smooth and sensitive feel when typing at high speed, and the rich multi-device connection features make it an ideal choice for office scenarios. Prices will be displayed here when reviewing the product undefined location related pricing information. Best price today best price today best price: Satec

Jul 29, 2025 am 01:42 AM

How to turn off autocorrect on Mac

TodisableautocorrectonyourMac,gotoApplemenu>SystemSettings>Keyboard>TextInput(orTextonolderversions)andturnoff"Correctspellingautomatically".2.Optionally,disablepredictivetextbyturningoff"Showpredictivetextsuggestions"inK

Jul 29, 2025 am 01:37 AM

How to recover a file that was not saved correctly

To restore unsaved files, first check the built-in automatic save version of the software, such as Microsoft Office's "Recover Unsaved Documents", Google Docs' version history, or Adobe's AutoRecover folder; secondly, find temporary files on your computer, Windows can search for .tmp or .asd files in C:\Users\YourUsername\AppData\Local\Temp, and macOS can find and rename the extension in /private/var/tmp and try to open it; if the above method is invalid, you can use Recuva, PhotoRec, or DiskDrill and other file recovery software to scan.

Jul 29, 2025 am 01:33 AM

Baldur's Gate 3: Best Bladesinging Wizard Class Build

Out of the 12 subclasses added in Patch 8 to Baldur's Gate 3, the Bladesinging archetype for the Wizard is perhaps the one that changes potential builds for the class the most. Normally, Wizards are studious spellcasters who avoid Close combat in fav

Jul 29, 2025 am 01:31 AM

C get stack trace example

Getting the call stack in C requires relying on platform tools or third-party libraries. In Linux, you can use backtrace() and backtrace_symbols() to combine the -rdynamic compilation option to implement it. 1. Include and call backtrace() to get the call stack address, 2. Convert backtrace_symbols() to symbolic strings, 3. Analyze the C function name as a readable form through abi::__cxa_demangle(), 4. It is recommended to use Boost.Stacktrace across platforms to obtain clearer and more automatically decoded output. In the end, it needs to be compiled correctly and handled to ensure normal functions.

Jul 29, 2025 am 01:25 AM

How to Create and Use a Virtual Machine

ChoosevirtualizationsoftwarelikeVirtualBoxforbeginners,whichisfreeandcross-platform.2.SetupaVMbyallocating2–8GBRAMand20–50GBdynamicallyallocatedvirtualdiskspace,dependingontheOS.3.InstallanOSbymountinganISOfileandfollowingstandardinstallationsteps,th

Jul 29, 2025 am 01:07 AM

Go for Data Engineering: A Performance Comparison

Goexcelsinperformance,offeringnear-RustspeedwithlowermemoryusagethanJavaandsignificantlyfasterexecutionthanPython,makingitidealforCPU-intensivedatatasks.2.Itsgoroutinesprovideefficient,simpleconcurrency,enablinghigh-throughputdatapipelinesforI/O-heav

Jul 29, 2025 am 12:59 AM

Performance comparison data engineering

How to make chrome default browser

Setting Chrome as the default browser on Windows and Mac requires the operating system and browser itself respectively. On Windows: 1. Open "Settings" → "Apps" → "Default Apps" → Find "Web Browser" and select Chrome; 2. Enter Chrome Settings → Click "Default Browser" → Click "Set as Default". On Mac: 1. Open "System Settings" → "Desktop and Screen Time" → Select Chrome as the default browser; 2. Enter Chrome Settings → Click "Set as Default". If the settings are invalid, it may be caused by third-party software binding, permission issues, system updates, or frequent installation and uninstallation of the browser. You can try to fix the installation, use the command prompt or check for software conflicts.

Jul 29, 2025 am 12:48 AM

Best Backup Software to Back up Files in Linux - Make Tech Easier

A backup software is an important program in every Linux user's toolbox. Although most users may not think of it in their daily use, it is the lifeline to ensure file security in the event of a data disaster. This article introduces seven of the best Linux backup software you can use for free. Directory SyncthingSparkleShareDeja DupRsyncRcloneRsnapshotSyncthingSyncthingSyncthing is a simple and practical tool that synchronizes folders between multiple systems. It is a continuous file synchronization program, meaning it can continuously synchronize files between two or more computers in real time, allowing your data to be safely backed up at all times. Syn

Jul 29, 2025 am 12:47 AM