A script to securely apply custom file and directory permissions in a user's home directory, ensuring proper access levels for sensitive files, development tools, and shared directories.

fix_permissions.sh

#!/bin/bash

#########
##### THIS SCRIPT CAN FUCK YOUR COMPUTER, use it on your own responsibility
#########
# User directory path
read -p "Enter the username or press Enter to use the current user ($(logname)): " input_user
USER_HOME="/home/${input_user:-$(logname)}"

# Function to apply permissions
apply_permissions() {
    chmod "$@" && return 0 || return 0
}

echo "Applying permissions in $USER_HOME..."

# Apply 755 to the entire user folder as a starting point
apply_permissions -R 755 "$USER_HOME"

# Specific adjustments for important directories and files
apply_permissions 600 $USER_HOME/.ssh/* \
    "$USER_HOME/.bash_history" "$USER_HOME/.zsh_history"
apply_permissions 644 $USER_HOME/.ssh/*.pub "$USER_HOME/.ssh/known_hosts" \
    "$USER_HOME/.bashrc" "$USER_HOME/.zshrc" "$USER_HOME/.profile"

# Development tools
apply_permissions -R 775 "$USER_HOME/.npm" "$USER_HOME/.nvm" "$USER_HOME/.cache/pip" "$USER_HOME/.virtualenvs"
apply_permissions -R 775 "$USER_HOME/.docker" "$USER_HOME/.local/share/containers" "$USER_HOME/.config/containers"
apply_permissions 600 "$USER_HOME/.docker/config.json"
apply_permissions 644 "$USER_HOME/.gitconfig"
apply_permissions 600 "$USER_HOME/.git-credentials"

# IDEs and development tools
apply_permissions -R 775 "$USER_HOME/.vscode" "$USER_HOME/.idea" "$USER_HOME/.cache/Code"

# GnuPG
apply_permissions -R 600 $USER_HOME/.gnupg/*
apply_permissions 744 "$USER_HOME/.gnupg"

echo "Permissions applied successfully!"