85 lines
No EOL
2.5 KiB
Bash
Executable file
85 lines
No EOL
2.5 KiB
Bash
Executable file
#!/bin/bash
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# Script: stopvnc
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# Purpose: Stop TigerVNC server running on specified port
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# Usage: stopvnc <port>
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# Exit codes: 0 = success, 1 = invalid arguments, 2 = vnc server not found, 3 = stop failed
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# Check if exactly 1 argument is provided
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if [ $# -ne 1 ]; then
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echo "Usage: $0 <port>" >&2
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echo "Example: $0 5900" >&2
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exit 1
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fi
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PORT="$1"
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# Validate port number
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if ! [[ "$PORT" =~ ^[0-9]+$ ]] || [ "$PORT" -lt 1024 ] || [ "$PORT" -gt 65535 ]; then
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echo "Error: Port must be a number between 1024 and 65535" >&2
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exit 1
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fi
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# Calculate display number (VNC display = port - 5900)
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DISPLAY_NUM=$((PORT - 5900))
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if [ $DISPLAY_NUM -lt 0 ]; then
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echo "Error: Port must be 5900 or higher for VNC display" >&2
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exit 1
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fi
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# Check if VNC server is running on this display
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VNC_LOCK_FILE="$HOME/.vnc/$(hostname):${DISPLAY_NUM}.pid"
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if [ ! -f "$VNC_LOCK_FILE" ]; then
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# Also check if process is actually running on the port
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if ! netstat -tuln 2>/dev/null | grep -q ":$PORT "; then
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echo "No VNC server found running on port $PORT (display :$DISPLAY_NUM)" >&2
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exit 2
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fi
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fi
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# Try to kill VNC server gracefully
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echo "Stopping VNC server on port $PORT (display :$DISPLAY_NUM)..."
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vncserver -kill ":$DISPLAY_NUM"
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KILL_RESULT=$?
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# Check if the kill command succeeded
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if [ $KILL_RESULT -eq 0 ]; then
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echo "VNC server on port $PORT stopped successfully"
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exit 0
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else
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# If graceful shutdown failed, try to find and kill the process by port
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echo "Graceful shutdown failed, attempting forceful termination..."
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# Find process using the port
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PID=$(netstat -tulnp 2>/dev/null | grep ":$PORT " | awk '{print $7}' | cut -d'/' -f1)
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if [ -n "$PID" ] && [ "$PID" != "-" ]; then
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kill -TERM "$PID" 2>/dev/null
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sleep 2
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# Check if process is still running
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if kill -0 "$PID" 2>/dev/null; then
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# Force kill if still running
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kill -KILL "$PID" 2>/dev/null
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sleep 1
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fi
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# Verify the process is gone
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if ! kill -0 "$PID" 2>/dev/null; then
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echo "VNC server on port $PORT forcefully terminated"
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# Clean up lock file if it exists
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if [ -f "$VNC_LOCK_FILE" ]; then
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rm -f "$VNC_LOCK_FILE"
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fi
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exit 0
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else
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echo "Error: Failed to stop VNC server on port $PORT" >&2
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exit 3
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fi
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else
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echo "Error: Could not find process using port $PORT" >&2
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exit 2
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fi
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fi |