This post gives the useful information about, Ubuntu Linux, Software Installation in Ubuntu Linux, Error bugs, Solving complicated errors etc. Installation Ubuntu Linux 18.04 Step by Step approach of Installation Ubuntu Linux https://www.linuxtechi.com/ubuntu-18-04-lts-desktop-installation-guide-screenshots/ https://www.linuxtechi.com/ubuntu-18-04-lts-desktop-installation-guide-screenshots/ WiFi Connection in Ubuntu   https://help.ubuntu.com/stable/ubuntu-help/net-wireless-connect.html Wired Ethernet Connection in Ubuntu https://help.ubuntu.com/stable/ubuntu-help/net-wired-connect.html.en https://help.ubuntu.com/stable/ubuntu-help/net-wired.html.en Installation of Synaptic Packet Manager in Ubuntu https://dev.to/xeroxism/how-to-install-synaptic-package-manager-in-ubuntu-linux-hm3 Installation of Scilab https://askubuntu.com/questions/297400/how-to-install-and-run-scilab-manually Error Bugs Error 1: unable to lock the administration directory (/var/lib/