Post Install

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1. Update Your System

Updating with Octopi
Updating with Pacman

Octopi is a graphical package manager for Arch-based distributions that provides a convenient way to manage packages and updates. To update your system with Octopi, follow these steps:

Launch Octopi from the application menu.
In the main window, click on the Check updates button (Top left), now next to it System upgrade.
Octopi will now check for available updates and prompt you to either install them on Octopi itself or in a terminal.
To proceed with the update, click the Apply button.
Octopi will download and install the updates.
It is advised to reboot your computer after a big update (especially if the kernel got an update).

Open a terminal emulator (or press ctrl + alt + t - mod + return in Cachy’s WMs).
Run the following command to update the system:
Terminal window
```
sudo pacman -Syu
```
It is advised to reboot your computer after a big update (especially if the kernel got an update).

2. Configuring Firewall (ufw)

To configure ufw, follow these steps:

sudo ufw enable

sudo ufw disable

By default, ufw allows all incoming and outgoing traffic, you can add specific rules to the firewall to block or allow specific connections.

# For example:
sudo ufw allow ssh

# To deny a specific port, check the following example:
sudo ufw deny 80

sudo ufw status verbose

For some apps like Visual Studio Code, the global menu may not work or may be attached to the parent app instead of the panel.

# To enable global menu support, run the command and restart the app.
sudo pacman -S appmenu-gtk-module libdbusmenu-glib

4. Enable AppArmor support using AppArmor.d profiles

Add the following kernel parameters to your Boot Manager, see Boot Manager Configuration for reference
```
lsm=landlock,lockdown,yama,integrity,apparmor,bpf
```
Install apparmor and apparmord (Set of over +1500 profiles) packages
Terminal window
```
sudo pacman -S apparmor apparmor.d-git
```
Enable/Start AppArmor service
Terminal window
```
systemctl enable --now apparmor.service
```
Enable caching for AppArmor profiles
/etc/apparmor/parser.conf
```
## Add the following lines:
write-cache
Optimize=compress-fast
```
Save the file and reboot.

5. Changing the Default Shell

Currently, CachyOS uses fish as the user’s default login shell. However, you can change the default shell to whatever you like.

bash
zsh

This is the default shell on almost every Linux distribution. It is also still used as the root user’s login shell. bash has basic autocomplete functionality and easy history management. It differs from zsh and fish in that it doesn’t have the fancy customization and plugin ecosystem that both fish and zsh have.

❯ chsh -s /usr/bin/bash

We provide a zsh config with commonly used plugins and configurations. It aims to have 1:1 functionality with our fish config. This is also the default shell used in MacOS.

❯ chsh -s /usr/bin/zsh