How to kill a process that is not responding?
When the program is stuck and cannot be closed, the most direct solution is to force the process to end. First, you can operate through the task manager: press Ctrl Shift Esc to open the task manager, find the stuck program under the "Process" tab, right-click to select "End Task", if it does not appear, click "More Details" to expand the complete list to search; secondly, you can use the command line to handle it: open CMD or PowerShell, enter the "keyword" of tasklist|findstr to find the corresponding PID, and then execute the taskkill/F/PID process number to force the end; finally, you can consider using third-party tools such as ProcessExplorer or Unlocker.
Jun 13, 2025 am 12:32 AM
How to recover a Linux system that won't boot (using a live USB)?
When Linux system fails to boot, using LiveUSB is an effective way to solve problems and recover files. First prepare a Live USB containing Linux distributions such as Ubuntu or Fedora, and select USB as the boot device by restarting the computer and entering the boot menu (usually pressing F12, Esc, etc.), so as to enter the Live environment. Next, open the terminal in the Live environment, run "sudofdisk-l" to identify the root partition (such as /dev/sda1), and use "sudomount/dev/sda1/mnt" to mount the partition; if there are separate /boot, /home or /efi partitions, they also need to be mounted separately. Then, browse/m
Jun 13, 2025 am 12:31 AM
What is the difference between sda, sdb, and nvme0n1?
Linux storage device names such as sda, sdb and nvme0n1 are not random, but reflect the device type and connection method. sda and sdb represent devices using SCSI or SATA interfaces, where "sd" means SCSI disk, and letters such as "a" and "b" indicate the kernel detection order; such naming is applicable to internal SATA hard disk, USB disk and optical drive, but may change due to changes in the detection order every time it is booted. nvme0n1 refers to a high-speed solid-state drive using the NVMe protocol, which is connected through the PCIe bus. "nvme" represents the protocol, "0" is the controller number, and "n1" is the first logical volume. NVMe has higher performance, lower latency than SATA, and supports multi-queue parallel I
Jun 13, 2025 am 12:30 AM
How to update my system on CentOS/RHEL using yum or dnf?
To update the CentOS or RHEL system, you must first confirm whether you are using yum or dnf package manager. Use yum in version 7, and use dnf 8 and above; 1. Enter yum--version or dnf--version to view the current command support status; 2. When updating the entire system, execute sudo[yum or dnf]update-y, and make sure that third-party sources such as EPEL are enabled to obtain more updates; 3. If you only want to update a specific software package, such as nginx, you can use sudo[yum/dnf]update package name to selectively upgrade; 4. Whether to restart after update depends on the specific situation. If the kernel, glibc or key services are updated, it is recommended to restart. You can use the following code to update the kernel, glibc or key services.
Jun 13, 2025 am 12:29 AM
What is LVM (Logical Volume Management) and why use it?
LVM (LogicalVolumeManagement) is a flexible storage management tool in Linux, which is easier to scale and manage than traditional partitions. It allows multiple physical disks to be combined into a volume group and create dynamically resized logical volumes from it, suitable for variable storage needs. For example, when a directory is insufficient, its capacity can be expanded directly from the volume group without repartitioning or restarting the system. In addition, LVM supports snapshot functionality, which can create instant copies of logical volumes for backup without interrupting service operation. Snapshots are thinly configured to take up extra space only when data changes, making them suitable for frequently updated databases or file systems. Finally, LVM also supports online resizing logical volume sizes, in conjunction with ext4 or
Jun 13, 2025 am 12:14 AM
How to use xargs to process a list of files?
xargs is a very useful tool when processing large amounts of files in the terminal. It can efficiently receive input (such as file names) and run commands. The basic usage is to pass the file list to xargs through a pipeline and specify the command to be executed. For example, find.-name"*.txt"|xargsrm will delete all .txt files; but if the file name contains spaces, find.-name"*.txt"-print0|xargs-0rm should be used for safe handling. 1. Use -n to control the number of parameters in each command call, such as xargs-n1gzip means compressing files one by one; 2. Use -P to execute multiple processes in parallel,
Jun 13, 2025 am 12:12 AM
What are the setuid, setgid, and sticky bits?
Setuid,setgid,andthestickybitarespecialpermissionflagsinUnix-likesystemsusedtomodifyfileanddirectorybehavior.1)Setuidallowsausertorunafilewiththeowner’spermissions,oftenusedforadmintasksviatoolslikepasswdbutposessecurityrisks.2)Setgidrunsfileswiththe
Jun 13, 2025 am 12:10 AM
LibreOffice Says It's Time to Ditch Windows 10 and Microsoft Office
Related ##### KDE Recommends Linux Over Windows 10, Accuses Microsoft of "Tech Extortion"The KDE community is actively promoting the Plasma desktop to Windows 10 users.Posts 4 LibreOffice remains the top free and open-source alternative to
Jun 12, 2025 pm 09:02 PM
I'll Never Go Back to the Wired Versions of These 7 Gadgets
In many ways, it doesn’t make sense for me to use wireless keyboards with my stationary PC. Not only do my keyboards never move, but I tend to keep the 2.4 GHz receiver sitting on my desk via a dongle attached to a cable. Further, my keyboard needs r
Jun 12, 2025 pm 03:02 PM
Microsoft's Answer to SteamOS Should Be a Game-Changer for PC Gaming
PC gamers have been dealing with these issues for decades now, as Windows has been and remains the default operating system for PC gamers. However, thanks to Valve and SteamOS, as well as other gaming-centric Linux distributions like Bazzite, Microso
Jun 12, 2025 pm 12:15 PM
I Refuse to Go Wireless With These 7 Gadgets
Fully wireless speakers, like the Anker Soundcore 2, can be a reasonable choice to pair with phones and laptops. They can usually draw power via USB, which allows them to be used wired. However, their limited power output also means that they don't g
Jun 12, 2025 pm 12:09 PM
Windows 11 Now Has a New Start Menu Design
Microsoft has made changes to almost every part of Windows 11 since its initial launch in 2021, but the taskbar and Start menu have remained largely untouched—until now. A fresh Start menu design is on the horizon, and it might be one you prefer.This
Jun 12, 2025 pm 12:05 PM
How to read a file line by line in a bash script?
The most common way to read file contents line by line in a Bash script is to use a whileread loop. 1. Use the whileread-rline structure to ensure that lines with special characters are processed correctly; 2. Redirect
Jun 12, 2025 am 10:25 AM
How to Find Top Directories and Files (Disk Space) in Linux
As a Linux administrator, you must periodically check which files and directories are taking up significant disk space. Identifying unnecessary data and removing it is essential for maintaining an efficient system.This short guide explains how to loc
Jun 11, 2025 am 11:21 AM
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