Setup Guide

🛠️ Linux Post-Install Setup Guide

📦 Pre-Install Backup

Before reinstalling your system, make sure to back up the following:

• 📧 Thunderbird (profiles / emails)
• 🌐 Chrome bookmarks or sync using Floccus
• 🔐 KeepassXC database + keyfile
• 📁 User data: Pictures, Documents, Videos, CLionProjects

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🔄 Post-Install Tasks

1. Create SSH key
2. Set up gocryptfs
3. Install Zsh / oh-my-zsh
4. KeepassXC autostart setup

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1. Create SSH Key

# Generate a new SSH key pair
ssh-keygen -t ed25519 -C "tux"

# Start SSH agent
eval "$(ssh-agent -s)"

# Add private key to the SSH agent
ssh-add ~/.ssh/id_ed25519

# Show public key
cat ~/.ssh/id_ed25519.pub

➡️ Add the public key to GitHub
GitHub → Settings → SSH and GPG keys → New SSH key

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2. Set up gocryptfs

# Unmount if already mounted
fusermount -u ~/Tresor

# Create mount and encrypted directories
mkdir ~/Tresor
mkdir ~/Nextcloud/.encrypted

# Initialize encrypted folder
gocryptfs -init ~/Nextcloud/.encrypted

# Store password securely
secret-tool store --label="Nextcloud Tresor" password tresor

# Retrieve password
secret-tool lookup password tresor

# Mount the encrypted folder
gocryptfs ~/Nextcloud/.encrypted/ ~/Tresor/

🔁 Autostart: Add gcfs.sh script to autostart.

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3. Zsh / Oh My Zsh

✅ Check Zsh version

zsh --version

📥 Install Oh My Zsh

sh -c "$(curl -fsSL https://raw.githubusercontent.com/ohmyzsh/ohmyzsh/master/tools/install.sh)"

🔌 Add plugins

# Autosuggestions
git clone https://github.com/zsh-users/zsh-autosuggestions.git $ZSH/plugins/zsh-autosuggestions

# Syntax Highlighting
git clone https://github.com/zsh-users/zsh-syntax-highlighting.git $ZSH/plugins/zsh-syntax-highlighting

Edit .zshrc:

plugins=(git z zsh-autosuggestions zsh-syntax-highlighting)

🎨 Install Powerlevel10k Theme

git clone https://github.com/romkatv/powerlevel10k.git $ZSH_CUSTOM/themes/powerlevel10k

Set in .zshrc:

ZSH_THEME="powerlevel10k/powerlevel10k"

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4. KeepassXC

🔐 Create keyfile

echo "YOURSTRING" | sha256sum /dev/stdin | cut -d " " -f 1 >> /path/to/keyfile.key

🧠 Store password securely

secret-tool store --label="KeepassXC" password keepass

🧰 Autostart script

#!/bin/bash
PASSWORD=$(secret-tool lookup password keepass)
echo $PASSWORD | /usr/bin/keepassxc --pw-stdin /path/to/your.kdbx --keyfile /path/to/keyfile.key > /path/to/autostart.log 2>&1

✅ KeepassXC Settings

• Minimize window on startup
• Minimize instead of quitting
• Show system tray icon