How to Set Up a Basic Firewall with iptables on Linux
SetdefaultpoliciestoDROPforINPUTandFORWARDchainswhileallowingOUTPUT;2.Allowloopbacktrafficandblockspoofedlocalhostaddresses;3.Permitestablishedandrelatedconnectionsforresponsetraffic;4.AllowSSHonport22(andHTTP/HTTPSifneeded);5.Saverulesusingdistribut
Aug 03, 2025 am 11:51 AM
How to pin an app to the taskbar in Windows
TopinanappfromtheStartmenu,openStart,findtheapp,right-clickit,andselect"Pintotaskbar".2.Topinarunningapp,right-clickitstaskbariconandchoose"Pintotaskbar".3.TopinanappfromFileExplorer,navigatetoits.exefile,right-clickit,andselect&q
Aug 03, 2025 am 11:42 AM
How to fix 'The file is in use' error in Windows
Closeanyprogramsthatmaybeusingthefile,includingbackgroundappsorpreviewpanes.2.DisablethePreviewpaneinFileExplorertopreventitfromlockingfiles.3.UseTaskManagertoendtasksofsuspectedapplications.4.OpenResourceMonitorviaresmon,searchthefilenameunderAssoci
Aug 03, 2025 am 11:20 AM
How to roll back a driver update in Windows
OpenDeviceManagerbypressingWin XandselectingitorsearchingintheStartmenu.2.Locatetheproblematicdevice—suchasDisplayadapters,Soundvideoandgamecontrollers,Networkadapters,orinputdevices—right-clickitandselectProperties.3.GototheDrivertabandclick“RollBac
Aug 03, 2025 am 11:10 AM
Understanding Linux I/O Schedulers
Thebestlinuxi/OschedulerDePendsontHestoragetypeRetWorkLoad: 1.Fornvme/PCIessds, UMEQ DEAD LINENONE; 2.FORSATASSDS, USEBFQORMQ-D Eadline; 3.Forhddssindesktops, Usebfqordeadline; 4.Forhddssinsordsordatabases, UsedEdinormq Deadline; 5.invirtualmachines, Useno
Aug 03, 2025 am 11:06 AM
How to install Windows on a new hard drive
CreateabootableUSBusingtheMicrosoftMediaCreationToolonanothercomputer.2.PhysicallyinstallthenewharddriveintoyourPCandconnectitproperly.3.BootfromtheUSBbyselectingitinthebootmenuoradjustingBIOS/UEFIsettings.4.RunWindowsSetup,choosecustominstallation,a
Aug 03, 2025 am 11:02 AM
How to see all open windows on a Mac?
ToseeallopenwindowsonaMac,useMissionControlbypressingtheF3key,swipingupwiththreeorfourfingersonthetrackpad,orclickingtheMissionControliconintheDock,whichdisplaysallwindowsacrossappsanddesktops;2.Forwindowsofasingleapp,hoverovertheapp’siconintheDock,r
Aug 03, 2025 am 10:59 AM
How to reset Windows 10 to factory settings
ToresetWindows10tofactorysettings,usethebuilt-inResetfeatureviaSettings>Update&Security>Recovery>Getstarted,whereyoucanchoose1.Keepmyfiles–removesappsandsettingsbutretainspersonalfiles,or2.Removeeverything–wipesalldata,apps,andsettings,i
Aug 03, 2025 am 10:58 AM
Windows 10 stuck on 'Shutting down' screen
Wait5–10minutestoconfirmiftheshutdownisstuck;ifunresponsiveafter15minutes,proceedtoforceshutdown.2.Holdthepowerbuttonfor5–10secondstoforceshutdown,wait10seconds,thenrestart—thisissafeoccasionally.3.CheckDeviceManagerforoutdatedorfaultydrivers,especia
Aug 03, 2025 am 10:55 AM
How to project your screen in Windows
PressWin PtoopentheProjectsidebarandchoosefromPCscreenonly,Duplicate,Extend,orSecondscreenonlyforwiredorwirelessconnections.2.ForwirelessprojectionviaMiracast,pressWin K,selectthedevice,andconfirmtheconnection,ensuringbothdevicessupportMiracast.3.Tro
Aug 03, 2025 am 10:36 AM
How to turn off keyboard backlight on a MacBook?
PressF5orfn F5repeatedlyuntilthekeyboardbacklightturnsoff.2.GotoSystemSettings>Keyboardanddisable"Adjustkeyboardbrightnessinlowlight"topreventautomaticactivation.3.Set"Turnkeyboardbacklightoffafter[time]"toashortdurationorturni
Aug 03, 2025 am 10:34 AM
How to use the vssadmin command to manage shadow copies in Windows
RunCommandPromptasAdministratortousevssadmin.2.Usevssadminlistshadowstoviewexistingshadowcopies.3.Usevssadminlistshadowstoragetocheckstorageusageandallocation.4.Resizestoragewithvssadminresizeshadowstorage/For=C:/On=C:/MaxSize=10GB.5.Createamanualsha
Aug 03, 2025 am 10:31 AM
How to change the default sound output and input device in Windows
TochangethedefaultsoundoutputorinputdeviceinWindows10and11,right-clickthespeakericoninthetaskbarandselect"OpenSoundsettings",thenunderthe"Output"section,chooseyourpreferreddevicefromthedropdowntosetitasdefaultforplayback,andundert
Aug 03, 2025 am 10:28 AM
How to change the system locale in Windows
TochangethesystemlocaleinWindows,openRegionsettingsviaintl.cplorSettings>Time&Language>Language®ion,thenclickAdministrativelanguagesettings.2.IntheAdministrativetab,clickChangesystemlocale...,selectthedesiredlanguage(ensurethelanguag
Aug 03, 2025 am 10:25 AM
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