1  #!/usr/bin/env bash
 2  
 3  # Display currently running npm and node scripts
 4  # Shows: PID, Runtime, CPU%, Script Name, Full Path
 5  
 6  set -euo pipefail
 7  
 8  echo "=== Node.js & NPM Process Monitor ==="
 9  echo ""
10  
11  # Find actual node/npm processes (filter by command name, not just path)
12  # This excludes system processes that just have "node" in their path
13  processes=$(ps aux | awk '$11 ~ /^(node|npm)$/ || $11 ~ /\/node$/ || $11 ~ /\/npm$/ || $0 ~ /node .*\.js/')
14  
15  if [[ -z "$processes" ]]; then
16      echo "No Node.js or npm processes currently running."
17      exit 0
18  fi
19  
20  # Print header
21  printf "%-8s %-12s %-8s %-30s %s\n" "PID" "RUNTIME" "CPU%" "SCRIPT" "PARAMETERS"
22  printf "%-8s %-12s %-8s %-30s %s\n" "---" "-------" "----" "------" "----------"
23  
24  # Parse and display each process
25  echo "$processes" | while IFS= read -r line; do
26      # Extract fields from ps aux output
27      pid=$(echo "$line" | awk '{print $2}')
28      cpu=$(echo "$line" | awk '{print $3}')
29  
30      # Get detailed info using ps with custom format
31      runtime=$(ps -p "$pid" -o etime= 2>/dev/null | xargs || echo "N/A")
32      full_cmd=$(ps -p "$pid" -o args= 2>/dev/null || echo "N/A")
33  
34      # Skip processes that no longer exist (race condition)
35      if [[ "$runtime" == "N/A" ]] || [[ "$full_cmd" == "N/A" ]]; then
36          continue
37      fi
38  
39      # Extract script name and parameters
40      if echo "$full_cmd" | grep -q "npm run"; then
41          script_name=$(echo "$full_cmd" | grep -oP 'npm run \K\S+' || echo "npm")
42          # Parameters after npm run command
43          params=$(echo "$full_cmd" | sed -E 's/.*npm run [^ ]+ ?//' || echo "")
44      elif echo "$full_cmd" | grep -q "npm"; then
45          script_name="npm"
46          params=$(echo "$full_cmd" | sed 's/npm *//' || echo "")
47      elif echo "$full_cmd" | grep -qE "node.*\.js"; then
48          script_name=$(echo "$full_cmd" | grep -oP '[^ ]+\.js' | head -1 | xargs basename || echo "node")
49          # Get everything after the .js file
50          params=$(echo "$full_cmd" | sed -E 's|.*\.js *||' || echo "")
51      else
52          script_name=$(echo "$full_cmd" | awk '{print $1}' | xargs basename)
53          params=$(echo "$full_cmd" | cut -d' ' -f2- || echo "")
54      fi
55  
56      # Truncate script name if too long
57      script_name_short=$(echo "$script_name" | cut -c1-30)
58  
59      # Print formatted output
60      printf "%-8s %-12s %-8s %-30s %s\n" "$pid" "$runtime" "${cpu}%" "$script_name_short" "$params"
61  done
62  
63  echo ""
64  echo "Run 'kill <PID>' to stop a process"