package main

import (
	"io/ioutil"
	"os"
	"strconv"
	"strings"
)

func GetProcessPIDs(name string) ([]int, error) {
	var pids []int

	dir, err := ioutil.ReadDir("/proc/")
	if err != nil {
		return nil, err
	}

	for _, entry := range dir {
		pid, err := strconv.Atoi(entry.Name())
		if entry.IsDir() && err == nil {
			f, err := os.ReadFile("/proc/" + entry.Name() + "/cmdline")
			if err != nil {
				return nil, err
			}

			if strings.Contains(string(f[:len(f)-1]), name) {
				pids = append(pids, pid)
			}
		}
	}

	return pids, nil
}