GarandPLG
dc44eb6d62
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.
79 lines
1.8 KiB
Bash
Executable File
79 lines
1.8 KiB
Bash
Executable File
#!/bin/bash
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usage() {
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echo "Użycie: $0 [OPCJE] [MIN_PORT] [MAX_PORT]"
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echo ""
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echo "Opcje:"
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echo " -n Wypisz też 4 sąsiednie porty (±1, ±2) z ich statusem"
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echo " -h Pokaż tę pomoc"
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echo ""
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echo "Przykłady:"
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echo " $0 # zakres 1024–65535"
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echo " $0 3000 9000 # własny zakres"
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echo " $0 -n # z sąsiadami"
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echo " $0 -n 3000 9000 # z sąsiadami i własnym zakresem"
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exit 0
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}
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SHOW_NEIGHBORS=false
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while getopts ":nh" opt; do
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case $opt in
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n) SHOW_NEIGHBORS=true ;;
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h) usage ;;
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\?) echo "❌ Nieznana opcja: -$OPTARG" >&2; exit 1 ;;
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esac
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done
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shift $(( OPTIND - 1 ))
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MIN_PORT=${1:-1024}
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MAX_PORT=${2:-65535}
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echo "🔍 Szukam zajętych portów w zakresie $MIN_PORT–$MAX_PORT..."
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USED_PORTS=$(ss -tuln 2>/dev/null \
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| awk 'NR>1 {print $5}' \
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| grep -oE '[0-9]+$' \
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| sort -un)
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USED_COUNT=$(echo "$USED_PORTS" | grep -c '^[0-9]')
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echo "📋 Znaleziono $USED_COUNT zajętych portów."
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is_used() {
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echo "$USED_PORTS" | grep -qx "$1"
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}
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MAX_ATTEMPTS=1000
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ATTEMPT=0
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while [ $ATTEMPT -lt $MAX_ATTEMPTS ]; do
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PORT=$(( RANDOM % (MAX_PORT - MIN_PORT + 1) + MIN_PORT ))
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if ! is_used "$PORT"; then
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echo ""
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echo "✅ Wolny port: $PORT"
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if $SHOW_NEIGHBORS; then
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echo ""
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echo "📊 Sąsiednie porty:"
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for OFFSET in -2 -1 1 2; do
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NEIGHBOR=$(( PORT + OFFSET ))
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if [ $NEIGHBOR -lt 1 ] || [ $NEIGHBOR -gt 65535 ]; then
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printf " port %-6s — poza zakresem\n" "$NEIGHBOR"
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elif is_used "$NEIGHBOR"; then
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printf " port %-6s 🔴 zajęty\n" "$NEIGHBOR"
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else
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printf " port %-6s 🟢 wolny\n" "$NEIGHBOR"
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fi
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done
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fi
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echo ""
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exit 0
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fi
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ATTEMPT=$(( ATTEMPT + 1 ))
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done
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echo "❌ Nie udało się znaleźć wolnego portu po $MAX_ATTEMPTS próbach."
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exit 1
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