diff --git a/common/common_darwin.go b/common/common_darwin.go
index 8d43de0..cc74601 100644
--- a/common/common_darwin.go
+++ b/common/common_darwin.go
@@ -68,7 +68,11 @@ func CallLsof(invoke Invoker, pid int32, args ...string) ([]string, error) {
 		cmd = []string{"-a", "-n", "-P", "-p", strconv.Itoa(int(pid))}
 	}
 	cmd = append(cmd, args...)
-	out, err := invoke.Command("/usr/sbin/lsof", cmd...)
+	lsof, err := exec.LookPath("lsof")
+	if err != nil {
+		return []string{}, err
+	}
+	out, err := invoke.Command(lsof, cmd...)
 	if err != nil {
 		return []string{}, err
 	}
diff --git a/common/common_linux.go b/common/common_linux.go
index bec024f..3c760e5 100644
--- a/common/common_linux.go
+++ b/common/common_linux.go
@@ -3,6 +3,7 @@
 package common
 
 import (
+	"os/exec"
 	"strconv"
 	"strings"
 )
@@ -15,7 +16,11 @@ func CallLsof(invoke Invoker, pid int32, args ...string) ([]string, error) {
 		cmd = []string{"-a", "-n", "-P", "-p", strconv.Itoa(int(pid))}
 	}
 	cmd = append(cmd, args...)
-	out, err := invoke.Command("/usr/bin/lsof", cmd...)
+	lsof, err := exec.LookPath("lsof")
+	if err != nil {
+		return []string{}, err
+	}
+	out, err := invoke.Command(lsof, cmd...)
 	if err != nil {
 		return []string{}, err
 	}
diff --git a/net/net_linux.go b/net/net_linux.go
index 54971f9..de0d65a 100644
--- a/net/net_linux.go
+++ b/net/net_linux.go
@@ -3,7 +3,6 @@
 package net
 
 import (
-	"fmt"
 	"strconv"
 	"strings"
 
@@ -135,7 +134,7 @@ func NetConnections(kind string) ([]NetConnectionStat, error) {
 		}
 		n, err := parseNetLine(rr)
 		if err != nil {
-			fmt.Println(err) // TODO: should debug print?
+			// fmt.Println(err) // TODO: should debug print?
 			continue
 		}