Removeunusedpackagesanddependencieswithsudoaptautoremove,cleanpackagecacheusingsudoaptcleanorautoclean,andremoveoldkernelsviasudoaptautoremove--purge.2.Clearsystemlogswithsudojournalctl--vacuum-time=7d,deletearchivedlogsin/var/log,andempty/tmpand/var

ToviewfilecontentsinLinux,usedifferentcommandsbasedonyourneeds:1.Forsmallfiles,usecattodisplaytheentirecontentatonce,withcat-ntoshowlinenumbers.2.Forlargefiles,uselesstoscrollpagebypageorlinebyline,searchwith/search_term,andquitwithq.3.Usemoreforbasi

The steps to set up alias in Linux are as follows: 1. Temporarily set the use of the alias command such as aliasll='ls-la'; 2. Permanently set the shell configuration file, such as ~/.bashrc, and then execute the source to take effect; 3. Be careful to avoid overwriting the original command and the different shell configurations are independent. Alias can simplify complex commands and improve efficiency, but only after the current shell environment takes effect and closes the terminal, it needs to be reasonably defined and regularly checked for configuration.

First, confirm that the device is connected to the Wi-Fi of the target router or connected through a network cable; 2. Enter http://192.168.10.1 in the browser address bar and press Enter; 3. Enter the correct username and password (default is often admin/admin or view the back of the router); 4. If it cannot be opened, check whether it is connected to the wrong network, confirm the correct IP address (you can view the default gateway through ipconfig), restart the router, change the browser or turn off the firewall; 5. After logging in, you can modify the Wi-Fi name password, set security options, configure port forwarding, enable guest network, upgrade firmware, etc.; 6. If you forget your password, you can reset the factory settings by pressing and holding the router reset hole for 5-10 seconds, but all configurations will be cleared.

ForDebian/Ubuntu,usedpkg-loraptlist--installedtolistinstalledpackages.2.ForRedHat/CentOS/Fedora,userpm-qaordnflistinstalled.3.ForopenSUSE,usezyppersearch--installed-onlyorrpm-qa.4.ForArchLinux,usepacman-Q,withpacman-Qeforexplicitlyinstalledpackages.A

Systemdisthefirstprocess(PID1)inmodernLinuxsystems,replacingolderinitsystemslikeSysVinitandUpstart,responsibleforbooting,managingservices,devices,logs,andusersessionsthroughasuiteofintegratedtools.2.Itusesunitfiles(.service,.timer,.socket,etc.)todefi

Usenanoforsimplicity,vimforadvancedediting,checkpermissions,andusesudoonlywhennecessary;1.Toeditwithnano,runnanofilename.txt,pressCtrl Otosave,andCtrl Xtoexit;2.Forvim,runvimfilename.txt,pressitoedit,Escthen:wqtosaveandquit;3.Tooverwriteafilequickly,

To safely adjust the size of Linux LVM partition, you must first back up the data and ensure that the file system is not mounted (especially the root partition); 2. When expanding the logical volume, first use vgdisplay or vgs to check the free space of the volume group, then use the lvextend command to expand the LV, and finally use resize2fs (ext4) or xfs_growfs (XFS) to adjust the file system size; 3. Shrink logical volume only supports ext series file systems. You must first uninstall the file system, run e2fsck check, use resize2fs to shrink the file system, and then use lvreduce to reduce the LV, and finally select resize2fs to expand the file system to match the LV and remount it; 4. After the operation is completed, make it