What is the Linux file system structure explained?
The Linux file system starts with the root directory (/) and uses a unified tree structure to organize files. 1. The root directory/ is the starting point of all files, integrating all hard disk and partition content; 2./home stores user personal files, which are protected by default; 3./etc is used to store system and application configuration files; 4./usr contains system programs such as command tools, library files; 5./var stores logs, caches and other variable data; 6./dev contains device files, representing hardware devices; 7./proc and/sys provide real-time information on the kernel and hardware. Understanding these directories helps quickly locate problems, manage services, and write scripts, which are complex at first but are easy to master after actual use.
Jul 05, 2025 am 01:08 AM
No wifi after installing linux
After installing Linux, you can't connect to Wi-Fi, and follow the following steps to solve it: 1. Check whether the wireless is disabled, use the rfkill command to view and unlock it; 2. Confirm whether the network card driver is installed, check the device through lspci or iplink and install the corresponding driver; 3. Check whether the NetworkManager is running normally, restart the service or use command line tools to connect if necessary; 4. Troubleshoot the conflict between BIOS settings, hardware switches or dual systems, turn off Windows Quick Start or adjust the BIOS settings. Most of the problems are caused by the driver not being installed or the wireless is disabled, so you can solve it by checking it in order.
Jul 05, 2025 am 01:07 AM
How to do a clean install of Windows 10?
To install Windows 10 cleanly, you need to prepare tools, back up data, and execute the installation process correctly. 1. Make a bootable USB drive, use the media creation tool of Microsoft's official website, select the corresponding version and architecture, and ensure that the USB drive is at least 8GB and is constantly opened during the production process; 2. Set the BIOS to support booting from the USB drive, and it may need to manually adjust the startup sequence; 3. Back up important data before installation, because the clean installation will format the system disk, it is recommended to transfer the files to an external hard disk or cloud disk; 4. Select "Customize: Install Windows only (Advanced)" during installation, and you can delete all partitions and create a new primary partition. Note that this operation will clear the hard disk data; 5. Select the system version during installation and enter the product key. If Windows 10 has been activated before
Jul 05, 2025 am 01:06 AM
What to do before a major Windows upgrade?
BeforeupgradingtoanewWindowsversion,backupfiles,checksystemandhardwarecompatibility,andreviewsoftwareanddrivers.First,backupallpersonaldatausingexternaldrives,FileHistory,orcloudstorage.Second,verifyyourPCmeetsthelatestspecsviaMicrosoft’stoolsandfree
Jul 05, 2025 am 01:04 AM
How to find the parent process ID (PPID) of a process?
To check the parent process ID (PPID) of the process, the method varies from system to system. ① In Unix-like systems, you can use the ps command to query the PPID of the specified PID with the -o parameter, such as ps-oppid=-p; if the process name is unknown, use ps-ef|grep to view the third column PPID; ② By reading the /proc//status file, use cat/proc//status|grepPPid to obtain more stable information; ③ PowerShell can use Get-WmiObject to query the ParentProcessId field, or add the "parent process ID" column to display through the task manager; ④ In terms of programming, in C/
Jul 05, 2025 am 01:03 AM
How to install linux on chromebook
ToinstallLinuxonaChromebook,choosethemethodthatbestfitsyourneeds:usethebuilt-inLinux(Beta)forlightweightdevelopment,CroutonforafulldesktopenvironmentalongsideChromeOS,replaceChromeOSentirelyfordedicatedLinuxuse,orsetupadual-bootsystemforflexibility.T
Jul 05, 2025 am 01:01 AM
What is the difference between df and du commands?
df displays the overall usage of the disk, providing an overview of used and available space; du counts the space usage of specific directories and files. 1.df is used to view the total space, used, remaining and usage percentage of each mounted file system, which is suitable for understanding the overall storage status of the system. 2.du goes deep into the directory structure, helps locate specific files or subdirectories that occupy space, and often simplifies output with options such as -sh. 3. The results of the two may differ due to different processing methods of deleted but not released files, hidden metadata or mount points. Tools such as lsof need to be used to troubleshoot abnormal space occupation.
Jul 05, 2025 am 12:59 AM
How to install Linux alongside Windows 11?
The steps to install dual systems of Linux and Windows 11 are as follows: 1. Reserve at least 20GB of space and create unallocated space through disk management; 2. Back up important data just in case; 3. Use Rufus to create a boot USB flash drive and select a GPT partitioning plan; 4. Enter the BIOS to set the U disk as the first boot item; 5. Select "InstallLinuxalongside Windows 11" during installation to automatically identify unallocated space; 6. If you partition manually, be careful not to delete the Windows partition, and set the root, switch and home directory partition reasonably; 7. Install the boot loader to the main hard disk to ensure that the boot menu is displayed normally; 8. If the boot menu does not appear after installation, you can use Windows
Jul 05, 2025 am 12:45 AM
What is a container and how does it differ from a virtual machine?
The core difference between containers and virtual machines (VMs) is the isolation method and resource usage. 1. The container shares the host system kernel, and achieves process isolation through namespace and cgroups, and is lightweight and fast-start, suitable for microservices and cloud-native applications; 2. The virtual machine simulates a complete computer, including an independent operating system, providing stronger isolation but consumes a lot of resources, suitable for running legacy systems or multi-operating system environments; 3. In actual use, containers, VMs or combinations can be selected according to needs to take into account performance and security.
Jul 05, 2025 am 12:42 AM
How to set default apps in Windows 10?
The methods to set default applications include: 1. Select the default application by file type: Go to "Settings > Applications > Default Application", click "Select Default Application by File Type", select the corresponding file type and change the application; 2. Set the default application by protocol: Click "Set Default Value by Application Protocol" on the same page, select protocols such as http, mailto and other protocols and specify the application; 3. Reset all default settings: Find the "Reset" section in the default application settings, and click "Reset to Microsoft Recommended Default Value" to restore the initial configuration.
Jul 05, 2025 am 12:41 AM
How to use Boot Camp to install Windows
Using BootCamp is a direct way to install Windows on an Intel chip Mac. 1. Confirm the Mac model support (IntelMac before 2019), 2. Prepare at least 64GB of USB disk, Windows ISO files, backup data and reserve 50GB of space; 3. Open the BootCamp Assistant, cancel the automatic driver download option, reasonably plan the partition size and create a boot disk; 4. Select the BOOTCAMP partition during installation, and the formatting requires loading the USB disk driver; 5. After the installation is completed, manually run the Setup.exe in the USB disk to install the driver to enable hardware functions; press the Option key to switch the system every time you restart, be careful to avoid adjusting partitions and large sizes in Windows.
Jul 05, 2025 am 12:37 AM
How to eject a disk on Mac
To solve the problem that the USB or external hard disk cannot be safely unplugged on a Mac, first check the desktop icon popup, Finder popup, program docking operation, or uninstall using Disk Tool. 1. Desktop icon pops up: Right-click the disk icon and select "Express" or drag to the "Eject" area next to the docking wastebasket; 2. Finder pops up: Find the device in the Finder sidebar and click the "Eject" button; 3. Docking operation: Right-click the device name and select "Express" or drag to the "Eject" area; 4. Force pops up: Close the occupant program or uninstall it through "Disk Utility". Be sure to develop the habit of popping out first and then pulling out to avoid data corruption.
Jul 05, 2025 am 12:31 AM
How to find a saved Wi-Fi password on Windows 10?
To view the Wi-Fi password saved on Windows 10 devices, it can be done via a command prompt or PowerShell. 1. Open the command prompt for administrator permissions, enter netshwlanshowprofiles to list all networks, then run netshwlanshowprofilename="Wi-Fi-Name"key=clear and view the password under "Key Content"; 2. You can also execute the same command in PowerShell with administrator permissions; 3. If the password is not displayed, it may be that it is not running as an administrator, the network configuration is damaged or the password is not saved correctly. You need to check the permissions or reconnect to the network and ensure the security.
Jul 05, 2025 am 12:31 AM
What to do when the Windows key is stuck
TofixastuckWindowskey,firstdetermineifit’sahardwareorsoftwareissue.1.Checkforphysicalproblemsbypressingthekeygently,lookingfordebris,orinspectingforlooseness.2.TestusingtheOn-ScreenKeyboardtoseeiftheissueissoftware-related.3.Temporarilydisableorremap
Jul 05, 2025 am 12:18 AM
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