Some problems and its solutions

 https://novicestuffs.wordpress.com/2017/04/25/how-to-uninstall-java-from-linux/

Look at 2 resources: Install and uninstall virtualbox: https://itsfoss.com/install-virtualbox-ubuntu/ Edit : 27.11.2021  Delete : virtuabox https://askubuntu.com/questions/703746/how-to-completely-remove-virtualbox for uninstall virtualbox from ubuntu:     sudo apt remove virtualbox virtualbox-* Install both of them: https://www.youtube.com/watch?v=VkkmWj72ONk

Look here: https://www.youtube.com/watch?v=V6m5ZPGIbcI firstly we must unmount flase drive for that: sudo umount /dev/sdb* (*unmount all partitions of drive) sudo cfdisk /dev/sdb sudo mkfs.vfat -n 'yourlabel' /dev/sdb1 in details , please look the video

https://www.addictivetips.com/ubuntu-linux-tips/split-ubuntu-between-hdd-ssd/

Install tomcat9 on linux ubuntu: https://phoenixnap.com/kb/how-to-install-tomcat-ubuntu https://www.digitalocean.com/community/tutorials/how-to-install-apache-tomcat-8-on-ubuntu-16-04 Install Ubuntu20 alongside Windows 10 as dual boot https://www.youtube.com/watch?v=-iSAyiicyQY Create Windows 10 bootable flash in ubuntu https://www.youtube.com/watch?v=rHFR-L7CtOY Install Windows Fonts on ubuntu https://ostechnix.com/install-microsoft-windows-fonts-ubuntu-16-04/ Install Configuration for Ubuntu https://wiki.ubuntu-tr.net/index.php?title=Ana_Sayfa JDK11 https://www.youtube.com/watch?v=72mz0-98vg8 jdk1.8 and netbeans 8.2 Install : https://www.youtube.com/watch?v=hyw0CHKGQ_Y UnInstall: https://netbeans.org/community/releases/82/install.html#uninstall_sollinux MYSQL https://www.youtube.com/watch?v=ug0TFsort24 GIT https://www.youtube.com/watch?v=ZMgLZUYd8Cw&t=522s Skype https://www.youtube.com/watch?v=58qlQREr_3E Docker https://www.youtube.com/watch?v=W7BvS942UZA h...