Table of Contents
1. Basic Linux Commands - Arch Linux
2. Install Specific Kernal
3. Remove Specific Kernal
4. Installing Packages from source
5. Installing Yay AUR Helper

Basic Linux Commands- [Arch Linux]

update sys repo and sync:

sudo pacman -Syy   

Refresh Mirrors or when you have a corrupted database on your system:

sudo pacman -Syyu 

upgrade system normal update purposes:

sudo pacman -Syu   

To "rollback" your updates from these repositories.when you need to downgrade a package to an older version by force:

sudo pacman -Syuu

Autoremove:

sudo pacman -Scc 

Autoclean:

sudo pacman -Sc    

Remove Orphaned:

sudo pacman -Qtdq  

Repo configure:

sudo nano /etc/pacman.conf 

Check sys vulnerabilities:

grep -r . /sys/devices/system/cpu/vulnerabilities/ 

Mirror Links:

sudo nano /etc/pacman.d/mirrorlist  

Install Specific Kernal in Arch Linux using the command below

pacman -Sy linux linux-headers

pacman -Sy linux-lts linux-lts-headers

pacman -Sy linux-hardened linux-headers-hardened

pacman -Sy linux-zen linux-zen-headers

After installing Linux kernal on Arch , regenerate the grub.cfg with the command below:

grub-mkconfig -o /boot/grub/grub.cfg

Then Reboot your system:

Remove Specific Kernal in Arch Linux using the command below

   pacman -Rsu linux linux-headers

   pacman -Rsu linux-lts linux-lts-headers

pacman -Rsu linux-hardened linux-headers-hardened

   pacman -Rsu linux-zen linux-zen-headers

After removing Linux kernal on Arch , regenerate the grub.cfg with the command below:

   grub-mkconfig -o /boot/grub/grub.cfg

Then Reboot your system:

Installing Packages from source in ArchLinux

To install a third-party software package in Arch Linux access the AUR package repository page and search for the package you need to install. In our case, We are going to install Google Chrome in our Arch Linux system:

Click on “Download Snapshot” in the right pane under “Package Actions“. This will download the tarball of Google Chrome in your local ‘Downloads’ folder:

Navigate to the ‘Downloads’ folder and extract the tarball:

tar -xvf google-chrome.tar.gz

Navigate the newly created google-chrome folder with the cd command:

cd google-chrome

To view the directory’s contents, use the ls command Be sure to catch a glance of several files:

ls

Next, run the makepkg command:

makepkg

The makepkg tool automates the process of converting the source code into binaries by acting as a compiler. In this case, the makepkg command instructs the System to generate a native Arch Linux package for Google Chrome:

Inside the snapshot folder, you’ll discover a newly generated native arch package for Google Chrome:

google-chrome-68.0.3440.106-1-x86_64.pkg.tar.xz

Switch to root user and run the command below to install Google Chrome:

pacman -U google-chrome*.tar.gz

Installing Yay AUR Helper in Arch Linux and Manjaro

To start off, log in as a sudo user and run the command below to download the git package:

sudo pacman -S git    

Next, clone the yay git repository:

cd /opt

sudo git clone https://aur.archlinux.org/yay-git.git 

Change the file permissions from the root the sudo user:

sudo chown -R useryou:useryou ./yay-git    

To build the package from PKGBUILD, navigate into the yay folder:

cd yay-git

Next, build the package using the makepkg command below:

makepkg -si    

How to Use Yay in Arch Linux and Manjaro: Once you have yay installed, you can upgrade all the packages on your system using the command:

sudo yay -Syu    

As with any other AUR helpers, you can install the packages using the command:

sudo yay -S gparted   

To remove a package using yay use the command:

sudo yay -Rns package_name   

To clean up all unwanted dependencies on your system, issue the command.

sudo yay -Yc