ubuntu – Page 5

Installing .NET 6 on Ubuntu 22.04

August 15, 2022

sudo apt update && sudo apt install -y wget

sudo apt update && sudo apt install -y wget

wget https://packages.microsoft.com/config/ubuntu/22.04/packages-microsoft-prod.deb -O packages-microsoft-prod.deb

wget https://packages.microsoft.com/config/ubuntu/22.04/packages-microsoft-prod.deb -O packages-microsoft-prod.deb

sudo dpkg -i packages-microsoft-prod.deb

sudo dpkg -i packages-microsoft-prod.deb

rm packages-microsoft-prod.deb

rm packages-microsoft-prod.deb

sudo touch /etc/apt/preferences

sudo touch /etc/apt/preferences

sudo nano /etc/apt/preferences

sudo nano /etc/apt/preferences

Paste :

Package: *

Pin: origin "packages.microsoft.com"

Pin-Priority: 1001

Package: * Pin: origin "packages.microsoft.com" Pin-Priority: 1001

Package: *
Pin: origin "packages.microsoft.com"
Pin-Priority: 1001

sudo apt-get update && \

sudo apt-get install -y dotnet-sdk-6.0

sudo apt-get update && \ sudo apt-get install -y dotnet-sdk-6.0

sudo apt-get update && \
  sudo apt-get install -y dotnet-sdk-6.0

dotnet --info

dotnet --info

References
https://docs.microsoft.com/en-us/dotnet/core/install/linux-ubuntu#2204
https://github.com/dotnet/core/issues/7699

Install Latest Kernel in Ubuntu using Mainline

August 2, 2022

sudo add-apt-repository ppa:cappelikan/ppa

sudo add-apt-repository ppa:cappelikan/ppa

sudo apt install mainline

sudo apt install mainline

References
https://ubuntuhandbook.org/index.php/2020/08/mainline-install-latest-kernel-ubuntu-linux-mint/
https://github.com/pimlie/ubuntu-mainline-kernel.sh

Turn off Wireless power management permanently in Ubuntu 22.04

August 2, 2022

sudo nano /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf

sudo nano /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf

And change wifi.powersave to 2

or

sudo sed -i 's/3/2/' /etc/NetworkManager/conf.d/*

sudo sed -i 's/3/2/' /etc/NetworkManager/conf.d/*

Possible values for the wifi.powersave field are:

NM_SETTING_WIRELESS_POWERSAVE_DEFAULT (0): use the default value

NM_SETTING_WIRELESS_POWERSAVE_IGNORE (1): don't touch existing setting

NM_SETTING_WIRELESS_POWERSAVE_DISABLE (2): disable powersave

NM_SETTING_WIRELESS_POWERSAVE_ENABLE (3): enable powersave

NM_SETTING_WIRELESS_POWERSAVE_DEFAULT (0): use the default value NM_SETTING_WIRELESS_POWERSAVE_IGNORE (1): don't touch existing setting NM_SETTING_WIRELESS_POWERSAVE_DISABLE (2): disable powersave NM_SETTING_WIRELESS_POWERSAVE_ENABLE (3): enable powersave

NM_SETTING_WIRELESS_POWERSAVE_DEFAULT (0): use the default value
NM_SETTING_WIRELESS_POWERSAVE_IGNORE  (1): don't touch existing setting
NM_SETTING_WIRELESS_POWERSAVE_DISABLE (2): disable powersave
NM_SETTING_WIRELESS_POWERSAVE_ENABLE  (3): enable powersave

References
https://askubuntu.com/questions/1403773/22-04-wifi-keeps-disconnecting-for-a-few-seconds-frequently
https://unix.stackexchange.com/questions/269661/how-to-turn-off-wireless-power-management-permanently

Increase or Resize Swap Space on Ubuntu 22.04

June 17, 2022

ls -lh /swapfile

ls -lh /swapfile

sudo swapoff -a

sudo swapoff -a

sudo fallocate -l 8G /swapfile

sudo fallocate -l 8G /swapfile

ls -lh /swapfile

ls -lh /swapfile

sudo chmod 600 /swapfile

sudo chmod 600 /swapfile

sudo mkswap /swapfile

sudo mkswap /swapfile

sudo swapon /swapfile

sudo swapon /swapfile

sudo swapon --show

sudo swapon --show

free -h

free -h

References
https://devanswers.co/creating-swap-space-ubuntu-18-04/

Install Windows Subsystem for Linux (WSL) on Windows 11

June 13, 2022

wsl --install

wsl --install

wsl --list --online

wsl --list --online

wsl --install -d Ubuntu

wsl --install -d Ubuntu

wsl --update

wsl --update

References
https://pureinfotech.com/install-wsl-windows-11/

Compile Bash Script into Binary in Linux

April 30, 2022

sudo apt install shc

sudo apt install shc

Compile script file using shc

shc -f hello.sh

shc -f hello.sh

Check generated files

ls -l hello*

-rw-rw-r-- 1 user user 29 Mar 14 07:37 hello.sh

-rwxrwxr-x 1 user user 14960 Mar 14 07:39 hello.sh.x

-rw-rw-r-- 1 user user 10047 Mar 14 07:39 hello.sh.x.c

ls -l hello* -rw-rw-r-- 1 user user 29 Mar 14 07:37 hello.sh -rwxrwxr-x 1 user user 14960 Mar 14 07:39 hello.sh.x -rw-rw-r-- 1 user user 10047 Mar 14 07:39 hello.sh.x.c

ls -l hello*
-rw-rw-r-- 1 user user    29 Mar 14 07:37 hello.sh
-rwxrwxr-x 1 user user 14960 Mar 14 07:39 hello.sh.x
-rw-rw-r-- 1 user user 10047 Mar 14 07:39 hello.sh.x.c

.sh is the original script.
sh.x is the compiled binary.
.sh.x.c is the C source code generated from the .sh file prior to compiling to .sh.x.

hello.sh.x permission is automatically set as executable

Rename executable

mv hello.sh.x hello

mv hello.sh.x hello

Check file execution

./hello Alice

./hello Alice

References
https://www.simplified.guide/bash/compile-script

Install Firefox from Mozilla on Ubuntu 22.04

April 28, 2022

Download Firefox from Firefox Download Page

tar xjf firefox-*.tar.bz2

tar xjf firefox-*.tar.bz2

mv firefox /opt

mv firefox /opt

Create a symlink to the Firefox executable:

ln -s /opt/firefox/firefox /usr/local/bin/firefox

ln -s /opt/firefox/firefox /usr/local/bin/firefox

Create a .desktop file for firefox :

touch ~/.local/share/applications/firefox.desktop

# or

touch /usr/local/share/applications/firefox.desktop

touch ~/.local/share/applications/firefox.desktop # or touch /usr/local/share/applications/firefox.desktop

touch ~/.local/share/applications/firefox.desktop
# or
touch /usr/local/share/applications/firefox.desktop

and paste these lines there:

[Desktop Entry]

Version=1.0

Name=Firefox Web Browser

Comment=Browse the World Wide Web

GenericName=Web Browser

Keywords=Internet;WWW;Browser;Web;Explorer

Exec=firefox %u

Terminal=false

X-MultipleArgs=false

Type=Application

Icon=/opt/firefox/browser/chrome/icons/default/default128.png

Categories=GNOME;GTK;Network;WebBrowser;

MimeType=text/html;text/xml;application/xhtml+xml;application/xml;application/rss+xml;application/rdf+xml;image/gif;image/jpeg;image/png;x-scheme-handler/http;x-scheme-handler/https;x-scheme-handler/ftp;x-scheme-handler/chrome;video/webm;application/x-xpinstall;

StartupNotify=true

[Desktop Entry] Version=1.0 Name=Firefox Web Browser Comment=Browse the World Wide Web GenericName=Web Browser Keywords=Internet;WWW;Browser;Web;Explorer Exec=firefox %u Terminal=false X-MultipleArgs=false Type=Application Icon=/opt/firefox/browser/chrome/icons/default/default128.png Categories=GNOME;GTK;Network;WebBrowser; MimeType=text/html;text/xml;application/xhtml+xml;application/xml;application/rss+xml;application/rdf+xml;image/gif;image/jpeg;image/png;x-scheme-handler/http;x-scheme-handler/https;x-scheme-handler/ftp;x-scheme-handler/chrome;video/webm;application/x-xpinstall; StartupNotify=true

[Desktop Entry]
Version=1.0
Name=Firefox Web Browser
Comment=Browse the World Wide Web
GenericName=Web Browser
Keywords=Internet;WWW;Browser;Web;Explorer
Exec=firefox %u
Terminal=false
X-MultipleArgs=false
Type=Application
Icon=/opt/firefox/browser/chrome/icons/default/default128.png
Categories=GNOME;GTK;Network;WebBrowser;
MimeType=text/html;text/xml;application/xhtml+xml;application/xml;application/rss+xml;application/rdf+xml;image/gif;image/jpeg;image/png;x-scheme-handler/http;x-scheme-handler/https;x-scheme-handler/ftp;x-scheme-handler/chrome;video/webm;application/x-xpinstall;
StartupNotify=true

Logout and login again

References
https://support.mozilla.org/en-US/kb/install-firefox-linux

No Writes for Read Timestamps to optimize SSD on Ubuntu

April 23, 2022

sudo nano /etc/fstab

sudo nano /etc/fstab

Edit the mounting options for your partitions by adding the text noatime and nodiratime to the lines defining your root (/) and other partitions if you have them (/home)

# / was on /dev/sda2 during installation

UUID=587e0dc5-2db1-4cd9-9792-a5459a7bcfd2 / ext4 noatime,nodiratime,errors=remount-ro 0 1

# /home was on /dev/sda3 during installation

UUID=2c919dc4-24de-474f-8da0-14c7e1240ab8 /home ext4 noatime,nodiratime,defaults 0 2

# / was on /dev/sda2 during installation UUID=587e0dc5-2db1-4cd9-9792-a5459a7bcfd2 / ext4 noatime,nodiratime,errors=remount-ro 0 1 # /home was on /dev/sda3 during installation UUID=2c919dc4-24de-474f-8da0-14c7e1240ab8 /home ext4 noatime,nodiratime,defaults 0 2

# / was on /dev/sda2 during installation
UUID=587e0dc5-2db1-4cd9-9792-a5459a7bcfd2 /               ext4    noatime,nodiratime,errors=remount-ro 0       1

# /home was on /dev/sda3 during installation
UUID=2c919dc4-24de-474f-8da0-14c7e1240ab8 /home           ext4    noatime,nodiratime,defaults        0       2

References
https://askubuntu.com/questions/1400/how-do-i-optimize-the-os-for-ssds

Enable TRIM For SSD in Ubuntu

April 23, 2022

make sure that the SSD in your computer supports TRIM

sudo hdparm -I /dev/sda # or sdb

sudo hdparm -I /dev/sda # or sdb

Find “Data Set Management TRIM supported”.

Clean up the root partition of the SSD

sudo fstrim -v /

sudo fstrim -v /

References
https://www.maketecheasier.com/enable-trim-for-ssd-in-ubuntu/

Disable Error Reporting in Ubuntu 22.04

April 23, 2022

Disable Apport at Boot

sudo nano /etc/default/apport

sudo nano /etc/default/apport

In the apport file, lookup for a line that has the enabled value ‘1’ by default. Change this value to 0 so that the system does not start the apport service at boot.

Uninstall Apport

sudo apt-get purge apport

sudo apt-get purge apport

References
https://vitux.com/how-to-disable-enable-automatic-error-reporting-in-ubuntu/