Linux how to set environment variables
Useexportfortemporaryvariablesinthecurrentsession;2.Addexportstatementsto~/.bashrcor~/.profileforuser-specificpersistence;3.Placeexecutablescriptswithexportcommandsin/etc/profile.d/forsystem-widevariables;4.Prefixcommandswithvariableassignmentsforsin
Aug 13, 2025 pm 01:53 PM
Linux how to view the manual page for a command
To view the man page of Linux commands, use the man command plus the command name to query, such as: manls, which will display the description, syntax, options and examples of the ls command; when navigating the man page, the space bar turns down, b turns up, the arrow keys scroll line by line, / add text to search forward, n jumps to the next match, q exits; the man page is divided into multiple parts, including NAME (command name and brief description), SYNOPSIS (used method), DESCRIPTION (detailed description), OPTIONS (available option list), EXAMPLES (used examples) and SEEALSO (related commands or documents); when commands with the same name appear in different parts, you can specify the part number by specifying the part number when commands with the same name appear in different parts.
Aug 13, 2025 pm 01:45 PM
How to force an app to use a specific GPU in Windows
OpenWindowsSettingsandgotoSystem>Display>GraphicstoaddanappandchooseeitherPowersaving(integratedGPU)orHighperformance(dedicatedGPU).2.ForNVIDIAGPUs,usetheNVIDIAControlPanelunderManage3DSettingstoassignaspecificapptotheHigh-performanceNVIDIAproc
Aug 13, 2025 pm 01:36 PM
Fixed: Windows Is Not Remembering My Password
CheckifusingaMicrosoftorlocalaccountviaSettings>Accounts>Yourinfoandensurecorrectlogindetailsandinternetconnection.2.OpenCredentialManagerinControlPanel,removeoutdatedorduplicateWindowscredentials,restart,andre-entercredentialswhileselecting“Re
Aug 13, 2025 pm 01:33 PM
How to find the IP address of my Windows computer using CMD
OpenCommandPromptbypressingWindows R,typingcmd,andpressingEnter,orbysearchingfor"CommandPrompt"intheStartmenu.2.TypeipconfigandpressEntertodisplaynetworkconfigurationdetails.3.Locateyouractiveconnection(Wi-FiorEthernetadapter)andfindthe&quo
Aug 13, 2025 pm 01:07 PM
Linux how to change the owner of a file
To change the owner of a Linux file, use the chown command. 1. Change the file owner only: sudochownnewuserfilename, for example sudochownlicereport.txt changes the owner of report.txt to alice. 2. Change the owner and group at the same time: sudochownuser:groupfilename, for example, sudochownalice:developersproject.log sets the owner to alice and the group to developers. 3. Change the group only: sudochown:groupfilename, e.g.
Aug 13, 2025 pm 01:02 PM
Advanced `grep` Usage with Regular Expressions in Linux
Use-Eforextendedregularexpressionstosimplifypatternsyntaxwith ,?,|,and();2.Applywordboundarieswith\borPOSIX[[::]]tomatchwholewords;3.Anchorpatternsusing^and$totargetlinebeginningsandendings;4.Combinemultiplepatternswith|inEREforlogicalORmatching;5.Le
Aug 13, 2025 pm 12:51 PM
How to enable Storage Sense to automatically free up space in Windows
PressWindows I,gotoSystem>Storage,andturnonStorageSensetoautomaticallydeleteunnecessaryfiles.2.ClickConfigureStorageSensetosetittorunduringlowdiskspaceoronaschedule.3.EnableDeletetemporaryfilesthatmyappsaren'tusing.4.SettimelimitsforfilesinRecycle
Aug 13, 2025 pm 12:38 PM
How to fix low FPS or stuttering in games after Windows update
LowFPSorstutteringafteraWindowsupdatecanbefixedbyaddressingdriver,system,andbackgroundprocessissues.1.Rollbackgraphicsdriversifrecentlyupdated,orperformacleaninstallofthelatestGameReady/Adrenalindriver.2.DisableFullscreenOptimizationsforthegame’s.exe
Aug 13, 2025 pm 12:34 PM
Fixed: Windows Start Menu Is Not Opening
RestartWindowsExplorerviaTaskManagertoresolvetemporaryglitches.2.RunSFC/scannowinCommandPromptasAdministratortorepaircorruptedsystemfiles.3.Re-registertheStartMenuusingPowerShellwiththeGet-AppXPackagecommandtofixapppackagecorruption.4.CheckforWindows
Aug 13, 2025 pm 12:30 PM
How to manage Windows Defender Exploit Protection settings
AccessExploitProtectionviaWindowsSecurityorStartmenusearch.2.Enableallsystem-wideprotectionslikeCFG,ASLR,andEAFunderSystemsettings,andusehardware-enforcedstackprotectionifsupported.3.Forproblematicapps,customizeprotectionsindividuallyunderProgramsett
Aug 13, 2025 pm 12:23 PM
How to disable startup programs in Windows
TodisablestartupprogramsinWindows10and11,openTaskManagerusingCtrl Shift Esc,gototheStartuptab,selectaprogram,andclickDisable,focusingonthosewithHighorMediumimpact.2.Alternatively,usetheSettingsappbypressingWin I,navigatingtoApps>Startup,andtogglin
Aug 13, 2025 am 11:57 AM
What to do when your Windows PC is running slow
CheckTaskManagerforresource-heavyprogramsandendunnecessarytasks.2.Disablenon-essentialstartupprogramstospeedupboottime.3.RunDiskCleanuptoremovejunkfilesandperformamalwarescanusingWindowsSecurityorantivirussoftware.4.UpgradehardwaresuchasaddingmoreRAM
Aug 13, 2025 am 11:53 AM
How to fix mouse lag or stuttering in Windows 11
First check the hardware and connection, replace the mouse, use different USB ports, replace the wireless mouse battery, avoid using the USB hub and reduce wireless interference; 2. Update or reinstall the mouse driver, automatically update through the device manager or download the latest driver from the manufacturer's official website, uninstall if necessary and restart the system to reinstall; 3. Adjust the mouse and power settings, turn off the "Improve pointer accuracy" option, and disable all USB root hubs in the device manager to enable the computer to turn off this device to save power; 4. Turn off the high-occupancy applications and services in the background, troubleshoot programs with high resource occupancy through the task manager, manage startup items or perform clean boots to troubleshoot conflicting software; 5. Update the Windows system and BIOS, and install the latest system supplement
Aug 13, 2025 am 11:45 AM
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