How Magnets Make Modern Gadgets Great
RelatedHow the iPhone StandBy Mode Makes Me More ProductiveStandBy to get productivePostsAdditionally, MagSafe on iPhones shouldn't be overlooked, as it's arguably even more beneficial. For starters, it ensures my wireless charger is perfectly aligne
Jul 13, 2025 am 01:13 AM
How to check disk space in Linux
Check disk space in Linux system. 1. Use the df command to view the overall disk usage. Add the -h parameter to make the output easier to read. You can also specify the mount point to view a specific file system. 2. Use the du command to view the specific directory or file space. The -s parameter is used for summary statistics, and combined with sort, you can sort to view the largest file; 3. Graphical tools such as GNOME's baobab provide intuitive visual analysis, suitable for users who are not used to the command line. Mastering these methods can efficiently manage disk space in different scenarios.
Jul 13, 2025 am 12:58 AM
How to find MAC address in Terminal
Checking the MAC address can be achieved through terminal commands. In macOS or Linux systems, 1. Use ifconfigen0|grepether (macOS check Wi-Fi interface); 2. Use iplinkshow and find link/ether (Linux); 3. List all interface names through ifconfig-l or iplink to determine the correct device name; in addition, you can also view it through a graphical interface, such as macOS entering "System Settings" → "Network" to view details, or directly view the Linux desktop environment in the network settings.
Jul 13, 2025 am 12:54 AM
What happens if you don't activate Windows?
If Windows is not activated, the system will still run, but it will face multiple restrictions. 1. The personalization options are limited, and the background, color and theme cannot be changed, and the "Activate Windows" watermark is displayed; 2. Security updates are still available, but optional updates and long-term support are limited; 3. Some functions such as timeline, cloud synchronization, etc. are restricted, and enterprise version tools such as BitLocker are not available; 4. There are legal risks, and you may encounter problems with piracy and frequently receive activation reminders.
Jul 13, 2025 am 12:49 AM
What does the netstat command show?
The netstat command can be used to check network connections, routing tables, interface statistics, etc. 1. Use netstat-tuln to view TCP and UDP connections in the monitored state to help identify which services are receiving connections; 2. Use netstat-r to view the kernel routing table to troubleshoot connection problems; 3. Use netstat-i to monitor the statistical information of the network interface, such as packet loss; 4. Use grep, watch and other tools to enhance functions, but modern systems recommend using ss instead of netstat.
Jul 13, 2025 am 12:43 AM
What is the /etc/resolv.conf file used for?
/etc/resolv.conf is a key file used to configure the DNS settings of Unix-like systems. Its core function is to tell the system to use the DNS server to resolve domain names. This file contains entries such as nameserver (specify the DNS server address), search (define the search domain), and options (adjust the resolution behavior such as timeout and retry times). 1. The system reads this file through the resolver library for domain name resolution; 2. Common entries include multiple nameserver, search list and options parameters; 3. The file is usually serviced by systemd-resolved, NetworkManager or dhclient.
Jul 13, 2025 am 12:31 AM
How to sync iPhone with Mac
iPhone and Mac synchronization can be achieved in a variety of ways. 1. It is most convenient to use iCloud to automatically synchronize. After logging in to the same Apple ID, you can automatically synchronize photos, contacts and other contents; 2. Connecting via USB data cable can achieve faster and more stable transmission and backup of the whole machine, operate in the finder and set trust options; 3. Third-party tools such as iMazing and Dropbox can flexibly synchronize specific files, but you need to pay attention to privacy and security. Just choose the right method according to your needs.
Jul 13, 2025 am 12:30 AM
How to turn off notifications on Mac
There are four main ways to turn off notifications on your Mac. 1. Turn off all notifications through "System Settings": Enter the "Notifications" setting, click the top switch to close all notifications with one click, which is suitable for temporary purity. 2. Manage the notification settings of applications one by one: select a specific app in the notification list, turn off its notification permissions or prohibit the display of banners, such as WeChat, email, etc. 3. Use "Concentration Mode" to intelligently filter notifications: Create "Work" and "Sleep" and other modes, set the types of notifications allowed to be received and can be automatically turned on regularly. 4. Tips for quickly switching notification status: Quickly enable Do Not Disturb mode through the Control Center or Siri, suitable for temporary mute needs.
Jul 13, 2025 am 12:26 AM
How to fix Snipping Tool not working in Windows?
If the screenshot tool SnippingTool in Windows cannot be used, you can follow the following steps to troubleshoot: 1. Confirm whether the system version supports it. Some new versions of Windows have been replaced with Snip&Sketch; 2. Restart the Explorer or computer to eliminate temporary stuttering; 3. Run sfc/scannow through the administrator command prompt to repair the system files; 4. Check and install the latest system updates; 5. Consider using Snip&Sketch or third-party screenshot tool instead.
Jul 13, 2025 am 12:22 AM
What is the purpose of the Terraform state file (.tfstate)?
The .tfstate file is the core mechanism for Terraform to manage infrastructure status. It is used for resource status tracking, support incremental changes, realize team collaboration, and needs to be properly backed up. 1. It records resource ID, attributes, dependencies and provider metadata, allowing Terraform to identify created resources; 2. Support incremental deployment to ensure that only the differences are changed rather than repeated creation; 3. Share states through remote backends and enable locking mechanisms to avoid conflicts in team collaboration; 4. Although it is JSON format, it is sensitive runtime data and should not be submitted to the code repository but needs to be backed up regularly.
Jul 13, 2025 am 12:17 AM
What is SSH (Secure Shell) and what port does it use?
SSH (SecureShell) is a protocol used for secure access and management of systems through unsecure networks. It uses 22 ports by default. Its main functions include remote login, secure file transfer, application tunneling and remote task automation. SSH differs from Telnet and FTP in that its communication is encrypted throughout and supports multiple authentication methods, such as password and public key authentication, thereby ensuring data privacy and tamper-proof. 1. Remote login to the server 2. Securely transfer files using SCP or SFTP 3. Forward other applications via encrypted channels 4. Automate tasks on remote machines through scripts. While ports can be changed to reduce automatic attack attempts, the core advantage lies in encryption and security mechanisms.
Jul 13, 2025 am 12:13 AM
What is a namespace in Kubernetes?
Kubernetesnamespacesdivideclusterresourcesfororganizationandisolation.Theyactasvirtualclusterswithinasinglephysicalcluster,separatingresourceslikeservicesandpods,enablingper-namespaceaccesscontrolviaRBAC,andallowingresourcequotastopreventoveruse.Comm
Jul 13, 2025 am 12:07 AM
How to Install PgAdmin on Rocky Linux and AlmaLinux
PgAdmin 4 is an open-source, powerful, and front-end PostgreSQL database administration tool. PgAdmin 4 allows administrators to seamlessly manage PostgreSQL databases from a web browser and run SQL queries among other database tasks. It’s written in
Jul 12, 2025 am 09:32 AM
Contacts App Missing All Contacts on Mac? Here’s the Fix
Some Mac users have noticed that their Contacts app occasionally loses all contact information, leaving the entire address book empty. While this situation is definitely concerning, there's a bright side — in most cases, it’s an easy fix, and your co
Jul 12, 2025 am 09:31 AM
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