Ubuntu

Ubuntu

Hints for user

Update packages

>sudo apt-get update

>sudo apt-get upgrade

>sudo apt-get autoremove

Fix system

>apt --fix-broken install

>apt –fix-missing

>sudo apt-get update

Wireless LAN connection

>sudo lsmod

>sudo lspci

>sudo lshw

>sudo lshw -C network

>sudo modprobe module

>sudo nano /etc/module

>sudo man lspci

>sudo ip address

>sudo service network-manager status

>sudo lwlist scan

>dmesg | grep iwl

>sudo rfkill list

For an example, in my notebook

Wi-fi information

Intel Centrino

Advanced-N 6205

WLp4s0

MTU=1500

ESSID: OUHK-Student

IEEE 802.11I/WPA2 version 1

Clipher: ccmp

JDK installation

>apt-get update && apt-get upgrade

>sudo apt-get install default-jdk

>java -version

(eg. openjdk “11.0.3” 2019-4-16)

Reinstall pip

>sudo apt-get install –reinstall python-pip

Uninstall pip

>sudo apt-get remove –purge python-pip

Run .sh file

>sh xxxx.sh

Display

To check display information

>sudo lshw -C display

(eg. GF119M(GeForce GT520M) , in my notebook 1)

or

>lspci-k | grep VGA

(check video card/driver)

To remove display driver

>sudo apt-get purge nvidia*

To search display driver

>apt search nvidia-driver

or

>apt-cache search nvidia-driver

>sudo apt install nvidia-driver-390

>reboot

To install display driver in ubuntu software updater

1. Go to Additional drivers

2. Select nivida-driver-390

3. Then, go to terminal type >sudo reboot

Must reboot to activate display driver

To check compiler version

>dpkg –list | grep compiler

(eg. GNU C++ compiler, GNNC compiler)

>gcc –version

>g –version

Apps update

To install Boinc

Method 1

>sudo apt-get install boinc-client

>sudo apt-get install boinc-manager

Then, go to “Activities” menu

Open Bonic manager

Method 2

>sudo aptitude install boinc-client boinc-manager

To install aptitude,

>sudo apt-get update

>sudo apt-get install aptitude

To view boinc control panel

Press Shift + CTRL + A

To view boinc tools

Press Shift + CTRL + E

To install Nvidia

>sudo apt-get update

>sudo apt-get install nividia-current

or

>sudo apt-get install nvidia-384

(for a specify version, 384.130)

or

>wget –no-check-certificate https://download.01.org/gfx/RPM-GPG-KEY-ilg-o- sudo apt-key add-

(where, o = oh)

To check Nvidia version

>nvidia-smi

(eg. version 390.132, GPU=0)

Selection between display driver

>sudo prime-select intel

>sudo prime-select nvidia

>sudo prime-select query

(to check which one display driver)

To install flash player

>sudo apt-get update

>sudo apt-get install flashplugin-installer

>sudo apt-get autoremove

To install Java

>sudo apt install openjdk-8-jdk

or

java-Home-java-8-openjdk-amd64

>sudo namo /etc/environment

OS recovery (Ubuntu 19.10)

Step 1

Press F2 to stop when entering Linux system

Step 2

Go to shell terminal

Step 3

Type

>sudo dpkg –configure -a

>sudo apt-get clean

>sudo apt-get update

Step 4

Reboot system

>reboot

To search display driver

>apt search nvidia-driver

or

>apt-cache search nvidia-driver

>sudo apt install nvidia-driver-390

>reboot

To reinstall current display driver

(eg. current use 5.3.0-29-generic)

Then, go to step 3.

Step 5

>apt –fix-broken install

For x server display

>gksu gedit /etc/x11/xorg.conf

Driver version: 390129

Server version: 11.0

Resolution: 108 x 108 dot per inch

Dept: 24

Configuration: X screen 0

(1366x768)

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