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dotfiles/banner/banner.sh

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+#!/usr/bin/env bash
+# Banner module (global/user). Runs once per login session.
+
+case "$-" in
+  *i*) ;;
+  *) return 0 ;;
+esac
+
+# Disable switch (per-user/per-shell)
+# 1) env: DISABLE_GLOBAL_BANNER=1
+# 2) file: ~/.config/ps1/disable-banner
+if [[ "${DISABLE_GLOBAL_BANNER:-0}" == "1" ]]; then
+  return 0
+fi
+if [[ -f "$HOME/.config/ps1/disable-banner" ]]; then
+  return 0
+fi
+
+# Run banner only once per session
+if [[ -n "${__BANNER_ALREADY_SHOWN:-}" ]]; then
+  return 0
+fi
+__BANNER_ALREADY_SHOWN=1
+
+# Find tools (be defensive)
+FIGLET="$(command -v figlet 2>/dev/null || true)"
+LANDSCAPE="$(command -v landscape-sysinfo 2>/dev/null || true)"
+
+# lolcat is often /usr/games/lolcat on Ubuntu
+if [[ -x /usr/games/lolcat ]]; then
+  LOLCAT="/usr/games/lolcat"
+else
+  LOLCAT="$(command -v lolcat 2>/dev/null || true)"
+fi
+
+# If lolcat missing, fallback to cat (no color)
+if [[ -z "${LOLCAT:-}" ]]; then
+  LOLCAT="cat"
+fi
+
+# Punchline source:
+# - global file: /etc/ps1-punchline
+# - fallback: "Hello"
+PUNCHLINE="Hello"
+if [[ -r /etc/ps1-punchline ]]; then
+  PUNCHLINE="$(cat /etc/ps1-punchline 2>/dev/null || echo "Hello")"
+fi
+
+# Print banner (only if figlet exists)
+if [[ -n "${FIGLET:-}" ]]; then
+  "$FIGLET" "$(hostname)" -c | "$LOLCAT"
+  "$FIGLET" -f digital "$PUNCHLINE" -c | "$LOLCAT"
+fi
+
+# Print sysinfo if available (Linux)
+if [[ -n "${LANDSCAPE:-}" ]]; then
+  "$LANDSCAPE" | "$LOLCAT"
+fi