Linux distros:

1. https://www.debian.org/
   1. https://ubuntu.com/
   2. https://linuxmint.com/
   3. https://pop.system76.com/
   4. https://www.kali.org/
   5. https://parrotsec.org/
2. https://www.redhat.com/en
   1. https://fedoraproject.org/
   2. https://www.centos.org/
   3. https://www.redhat.com/en/technologies/linux-platforms/enterprise-linux
   4. https://rockylinux.org/
3. https://archlinux.org/
   1. https://manjaro.org/
   2. https://endeavouros.com/
   3. https://parchlinux.com/
4. https://www.suse.com/
   1. https://get.opensuse.org/tumbleweed/
   2. https://www.suse.com/
5. https://www.gentoo.org/
6. https://www.linuxfromscratch.org/

Package Managers

1. APT (Advanced Package Tool):
   • Used by Debian and its derivatives, such as Ubuntu.
   • Commands include apt-get, apt-cache, and apt.
   • Example: sudo apt install package-name
2. YUM (Yellowdog Updater, Modified):
   • Used by Red Hat-based distributions, such as CentOS and Fedora.
   • Commands include yum and dnf (the latter is the next-generation version of YUM).
   • Example: sudo yum install package-name or sudo dnf install package-name
3. RPM (Red Hat Package Manager):
   • A low-level package manager used by Red Hat and its derivatives.
   • Commands include rpm for installing, querying, and managing RPM packages.
   • Example: sudo rpm -ivh package.rpm
4. Zypper:
   • Used by openSUSE.
   • Commands include zypper install, zypper update, etc.
   • Example: sudo zypper install package-name
5. Pacman:
   • Used by Arch Linux and its derivatives.
   • Commands include pacman -S for installing packages.
   • Example: sudo pacman -S package-name
6. Portage:
   • Used by Gentoo Linux.
   • It uses a system of "ebuilds" to manage packages.
   • Example: emerge package-name
7. Snap:
   • A package management system developed by Canonical for distributing software in a containerized format.
   • Example: sudo snap install package-name
8. Flatpak:
   • A system for building, distributing, and running sandboxed desktop applications on Linux.
   • Example: flatpak install flathub package-name
9. Nix:
   • A package manager for the NixOS Linux distribution, which allows for reproducible builds and package management.
   • Example: nix-env -i package-name