initial commit of setup script

README_SETUP_DEBIAN.md

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+Debian setup script
+
+This repository contains a simple idempotent-ish script to provision a Debian-based machine after a rebuild.
+
+Files
+- setup-debian.sh: main script to run (creates/updates ~/.bashrc entries)
+
+Usage
+1. Make the script executable and run it as your user (it will use sudo when needed):
+
+```bash
+chmod +x ~/setup-debian.sh
+~/setup-debian.sh
+```
+
+or run with sudo:
+
+```bash
+sudo bash ~/setup-debian.sh
+```
+
+What the script does
+- Updates apt and installs requested packages (curl, net-tools, ncdu, tmux, htop, nala, neofetch, nfs-common, git, neovim, etc.)
+- Installs `snapd` and installs Bitwarden via snap
+- Attempts to detect a unix socket (ssh/bitwarden) and export `SSH_AUTH_SOCK` to `~/.bashrc`
+- Installs VS Code via snap
+- Installs latest `kubectl` binary and enables bash completion + aliases (`k`)
+- Adds a `fgk` alias for `flux get kustomizations all`
+- Adds arrow-key history search (type prefix then Up/Down)
+
+Notes
+- The script attempts to detect a Bitwarden SSH agent socket but may not find it automatically depending on how Bitwarden exposes it; if needed, manually set `SSH_AUTH_SOCK` in your shell to the socket path.
+- `flux` must be installed separately if you need `fgk` to work.

setup-debian.sh

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+#!/usr/bin/env bash
+set -euo pipefail
+
+# Debian setup script - idempotent-ish
+# Run as your user; the script will use sudo where needed.
+
+SUDO=''
+if [ "$EUID" -ne 0 ]; then
+  SUDO='sudo'
+fi
+
+echo "Starting Debian setup..."
+
+${SUDO} apt update
+${SUDO} apt upgrade -y
+
+PKGS=(curl net-tools ncdu tmux htop nala neofetch nfs-common git neovim bash-completion ca-certificates gnupg lsb-release software-properties-common)
+echo "Installing packages: ${PKGS[*]}"
+${SUDO} apt install -y "${PKGS[@]}"
+
+# snapd + Bitwarden
+if ! command -v snap >/dev/null 2>&1; then
+  echo "Installing snapd..."
+  ${SUDO} apt install -y snapd
+  ${SUDO} systemctl enable --now snapd.socket || true
+fi
+
+echo "Installing Bitwarden (snap)..."
+${SUDO} snap install bitwarden || true
+
+# Set SSH_AUTH_SOCK to Bitwarden snap socket path
+# This uses the predictable snap path for the current user.
+ssh_sock="/home/$(whoami)/snap/bitwarden/current/.bitwarden-ssh-agent.sock"
+if ! grep -q "export SSH_AUTH_SOCK=${ssh_sock}" "$HOME/.bashrc" 2>/dev/null; then
+  echo "Adding Bitwarden SSH_AUTH_SOCK to ~/.bashrc"
+  printf "\n# Bitwarden SSH agent socket\nexport SSH_AUTH_SOCK=%s\n" "$ssh_sock" >> "$HOME/.bashrc"
+fi
+
+# Install VS Code via snap (classic)
+if ! command -v code >/dev/null 2>&1; then
+  echo "Installing VS Code (snap)..."
+  ${SUDO} snap install --classic code || true
+fi
+
+# kubectl installation (latest stable binary)
+if ! command -v kubectl >/dev/null 2>&1; then
+  echo "Installing kubectl..."
+  curl -fsSLO "https://dl.k8s.io/release/$(curl -L -s https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl"
+  ${SUDO} install -o root -g root -m 0755 kubectl /usr/local/bin/kubectl
+  rm -f kubectl
+fi
+
+# flux CLI installation (latest release)
+if ! command -v flux >/dev/null 2>&1; then
+  echo "Installing flux CLI..."
+  curl -s https://fluxcd.io/install.sh | ${SUDO} bash
+fi
+
+# velero CLI installation (latest release)
+if ! command -v velero >/dev/null 2>&1; then
+  echo "Installing velero CLI..."
+  velero_version="$(curl -fsSL https://api.github.com/repos/vmware-tanzu/velero/releases/latest | grep -m1 '"tag_name"' | sed -E 's/.*"([^"]+)".*/\1/')"
+  curl -fsSLO "https://github.com/vmware-tanzu/velero/releases/download/${velero_version}/velero-${velero_version}-linux-amd64.tar.gz"
+  tar -xzf "velero-${velero_version}-linux-amd64.tar.gz"
+  ${SUDO} install -o root -g root -m 0755 "velero-${velero_version}-linux-amd64/velero" /usr/local/bin/velero
+  rm -rf "velero-${velero_version}-linux-amd64" "velero-${velero_version}-linux-amd64.tar.gz"
+fi
+
+# Enable kubectl bash completion and add aliases to ~/.bashrc if missing
+ensure_bashrc_snippet() {
+  file="$HOME/.bashrc"
+  grep -q 'kubectl completion bash' "$file" || cat >> "$file" <<'BASH_SNIPPET'
+
+# kubectl completion + aliases
+if command -v kubectl >/dev/null 2>&1; then
+  source <(kubectl completion bash)
+  alias k=kubectl
+  complete -F __start_kubectl k
+fi
+
+# alias for flux get kustomizations
+alias fgk='flux get kustomizations all'
+BASH_SNIPPET
+
+  grep -q 'history-search-backward' "$file" || cat >> "$file" <<'HIST_SNIPPET'
+
+# History search with arrow keys: type start then Up/Down to search
+bind '"\e[A": history-search-backward'
+bind '"\e[B": history-search-forward'
+HIST_SNIPPET
+}
+
+ensure_bashrc_snippet
+
+echo "Setup complete. Open a new shell or run 'source ~/.bashrc' to load changes."
+echo "If Bitwarden provides an SSH agent, ensure SSH_AUTH_SOCK points to its socket."
+
+exit 0