Wrote own function to get process pids. Ditching pgrep.

prog/util.go

@@ -0,0 +1,32 @@
+package prog
+
+import (
+	"io/ioutil"
+	"os"
+	"strconv"
+)
+
+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() + "/comm")
+			if err != nil {
+				return nil, err
+			}
+
+			if name == string(f[:len(f)-1]) {
+				pids = append(pids, pid)
+			}
+		}
+	}
+
+	return pids, nil
+}