Tag: ubuntu

Installing .NET 6 on Ubuntu 22.04

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

sudo dpkg -i packages-microsoft-prod.deb

rm packages-microsoft-prod.deb

sudo touch /etc/apt/preferences
sudo nano /etc/apt/preferences

Paste :

Package: *
Pin: origin "packages.microsoft.com"
Pin-Priority: 1001
sudo apt-get update && \
  sudo apt-get install -y dotnet-sdk-6.0
dotnet --info

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

Turn off Wireless power management permanently in Ubuntu 22.04

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/*

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

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

Compile Bash Script into Binary in Linux

sudo apt install shc

Compile script file using shc

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

.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

Check file execution

./hello Alice

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

Install Firefox from Mozilla on Ubuntu 22.04

Download Firefox from Firefox Download Page

tar xjf firefox-*.tar.bz2
mv firefox /opt

Create a symlink to the Firefox executable:

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

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

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

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

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