Add free-ports script, Docker aliases, and Bun env

Add free-ports.sh script and a corresponding alias in .bash_aliases. Introduce docker-clean and docker-update aliases for Docker maintenance. Export BUN_INSTALL and prepend its bin directory to PATH in .profile.
2026-06-11 15:22:01 +02:00
parent ee8a4660f8
commit dc44eb6d62
3 changed files with 86 additions and 1 deletions
@@ -0,0 +1,78 @@
+#!/bin/bash
+
+usage() {
+  echo "Użycie: $0 [OPCJE] [MIN_PORT] [MAX_PORT]"
+  echo ""
+  echo "Opcje:"
+  echo "  -n    Wypisz też 4 sąsiednie porty (±1, ±2) z ich statusem"
+  echo "  -h    Pokaż tę pomoc"
+  echo ""
+  echo "Przykłady:"
+  echo "  $0                  # zakres 1024–65535"
+  echo "  $0 3000 9000        # własny zakres"
+  echo "  $0 -n               # z sąsiadami"
+  echo "  $0 -n 3000 9000     # z sąsiadami i własnym zakresem"
+  exit 0
+}
+
+SHOW_NEIGHBORS=false
+while getopts ":nh" opt; do
+  case $opt in
+    n) SHOW_NEIGHBORS=true ;;
+    h) usage ;;
+    \?) echo "❌ Nieznana opcja: -$OPTARG" >&2; exit 1 ;;
+  esac
+done
+shift $(( OPTIND - 1 ))
+
+MIN_PORT=${1:-1024}
+MAX_PORT=${2:-65535}
+
+echo "🔍 Szukam zajętych portów w zakresie $MIN_PORT–$MAX_PORT..."
+
+USED_PORTS=$(ss -tuln 2>/dev/null \
+  | awk 'NR>1 {print $5}' \
+  | grep -oE '[0-9]+$' \
+  | sort -un)
+
+USED_COUNT=$(echo "$USED_PORTS" | grep -c '^[0-9]')
+echo "📋 Znaleziono $USED_COUNT zajętych portów."
+
+is_used() {
+  echo "$USED_PORTS" | grep -qx "$1"
+}
+
+MAX_ATTEMPTS=1000
+ATTEMPT=0
+
+while [ $ATTEMPT -lt $MAX_ATTEMPTS ]; do
+  PORT=$(( RANDOM % (MAX_PORT - MIN_PORT + 1) + MIN_PORT ))
+
+  if ! is_used "$PORT"; then
+    echo ""
+    echo "✅ Wolny port: $PORT"
+
+    if $SHOW_NEIGHBORS; then
+      echo ""
+      echo "📊 Sąsiednie porty:"
+      for OFFSET in -2 -1 1 2; do
+        NEIGHBOR=$(( PORT + OFFSET ))
+        if [ $NEIGHBOR -lt 1 ] || [ $NEIGHBOR -gt 65535 ]; then
+          printf "   port %-6s  —  poza zakresem\n" "$NEIGHBOR"
+        elif is_used "$NEIGHBOR"; then
+          printf "   port %-6s  🔴  zajęty\n" "$NEIGHBOR"
+        else
+          printf "   port %-6s  🟢  wolny\n" "$NEIGHBOR"
+        fi
+      done
+    fi
+
+    echo ""
+    exit 0
+  fi
+
+  ATTEMPT=$(( ATTEMPT + 1 ))
+done
+
+echo "❌ Nie udało się znaleźć wolnego portu po $MAX_ATTEMPTS próbach."
+exit 1