diff --git a/cpu/cpu_darwin.go b/cpu/cpu_darwin.go
index 36ae562535d29471026f555e95c5122a6e3bb43e..fbb74a821f13b0f0a3380261bfe1f707e45a35b5 100644
--- a/cpu/cpu_darwin.go
+++ b/cpu/cpu_darwin.go
@@ -32,8 +32,11 @@ func Times(percpu bool) ([]TimesStat, error) {
 // Returns only one CPUInfoStat on FreeBSD
 func Info() ([]InfoStat, error) {
 	var ret []InfoStat
-
-	out, err := exec.Command("/usr/sbin/sysctl", "machdep.cpu").Output()
+	sysctl, err := exec.LookPath("/usr/sbin/sysctl")
+	if err != nil {
+		return ret, err
+	}
+	out, err := exec.Command(sysctl, "machdep.cpu").Output()
 	if err != nil {
 		return ret, err
 	}
@@ -87,7 +90,7 @@ func Info() ([]InfoStat, error) {
 
 	// Use the rated frequency of the CPU. This is a static value and does not
 	// account for low power or Turbo Boost modes.
-	out, err = exec.Command("/usr/sbin/sysctl", "hw.cpufrequency").Output()
+	out, err = exec.Command(sysctl, "hw.cpufrequency").Output()
 	if err != nil {
 		return ret, err
 	}
diff --git a/cpu/cpu_freebsd.go b/cpu/cpu_freebsd.go
index fb962e7bc7a941812181a17036b51544a970484c..ce1adf3c16ddc4cfabfb7215ec9c405ebf4f6aa8 100644
--- a/cpu/cpu_freebsd.go
+++ b/cpu/cpu_freebsd.go
@@ -25,7 +25,11 @@ const (
 var ClocksPerSec = float64(128)
 
 func init() {
-	out, err := exec.Command("/usr/bin/getconf", "CLK_TCK").Output()
+	getconf, err := exec.LookPath("/usr/bin/getconf")
+	if err != nil {
+		return
+	}
+	out, err := exec.Command(getconf, "CLK_TCK").Output()
 	// ignore errors
 	if err == nil {
 		i, err := strconv.ParseFloat(strings.TrimSpace(string(out)), 64)
diff --git a/cpu/cpu_linux.go b/cpu/cpu_linux.go
index baeb74243ac0192f83ab83ec081050a0993241a2..c561f66f01e7f9435e688388180211dd97d24132 100644
--- a/cpu/cpu_linux.go
+++ b/cpu/cpu_linux.go
@@ -15,7 +15,11 @@ import (
 var cpu_tick = float64(100)
 
 func init() {
-	out, err := exec.Command("/usr/bin/getconf", "CLK_TCK").Output()
+	getconf, err := exec.LookPath("/usr/bin/getconf")
+	if err != nil {
+		return
+	}
+	out, err := exec.Command(getcon, "CLK_TCK").Output()
 	// ignore errors
 	if err == nil {
 		i, err := strconv.ParseFloat(strings.TrimSpace(string(out)), 64)
diff --git a/disk/disk_linux.go b/disk/disk_linux.go
index 6d976e428bb81104427baf6cef25e7edab633364..91e25a108afcfd1deb0eaff9425f2e8f11141b7f 100644
--- a/disk/disk_linux.go
+++ b/disk/disk_linux.go
@@ -298,7 +298,12 @@ func IOCounters() (map[string]IOCountersStat, error) {
 
 func GetDiskSerialNumber(name string) string {
 	n := fmt.Sprintf("--name=%s", name)
-	out, err := exec.Command("/sbin/udevadm", "info", "--query=property", n).Output()
+	udevadm, err := exec.LookPath("/sbin/udevadm")
+	if err != nil {
+		return ""
+	}
+
+	out, err := exec.Command(udevadm, "info", "--query=property", n).Output()
 
 	// does not return error, just an empty string
 	if err != nil {
diff --git a/host/host_darwin.go b/host/host_darwin.go
index 9a448d2caefe268c3e722e152376d1db8debcb2f..f4a8c36a26f27773cc294ded1868473bb47cb1b5 100644
--- a/host/host_darwin.go
+++ b/host/host_darwin.go
@@ -127,12 +127,16 @@ func PlatformInformation() (string, string, string, error) {
 	family := ""
 	version := ""
 
-	out, err := exec.Command("uname", "-s").Output()
+	uname, err := exec.LookPath("uname")
+	if err != nil {
+		return "", "", "", err
+	}
+	out, err := exec.Command(uname, "-s").Output()
 	if err == nil {
 		platform = strings.ToLower(strings.TrimSpace(string(out)))
 	}
 
-	out, err = exec.Command("uname", "-r").Output()
+	out, err = exec.Command(uname, "-r").Output()
 	if err == nil {
 		version = strings.ToLower(strings.TrimSpace(string(out)))
 	}
diff --git a/host/host_freebsd.go b/host/host_freebsd.go
index 2f62508b39c26e7f9aec9bfbd494e38fbfb22554..06142e1c803cdd76d21683086c217444ac678262 100644
--- a/host/host_freebsd.go
+++ b/host/host_freebsd.go
@@ -133,13 +133,17 @@ func PlatformInformation() (string, string, string, error) {
 	platform := ""
 	family := ""
 	version := ""
+	uname, err := exec.LookPath("uname")
+	if err != nil {
+		return "", "", "", err
+	}
 
-	out, err := exec.Command("uname", "-s").Output()
+	out, err := exec.Command(uname, "-s").Output()
 	if err == nil {
 		platform = strings.ToLower(strings.TrimSpace(string(out)))
 	}
 
-	out, err = exec.Command("uname", "-r").Output()
+	out, err = exec.Command(uname, "-r").Output()
 	if err == nil {
 		version = strings.ToLower(strings.TrimSpace(string(out)))
 	}
diff --git a/host/host_linux.go b/host/host_linux.go
index 479416528390890239e784fd3acd8f5c5637cc44..3ae232aeda44f502db82689006ccf034e11a630f 100644
--- a/host/host_linux.go
+++ b/host/host_linux.go
@@ -163,7 +163,11 @@ func getLSB() (*LSB, error) {
 			}
 		}
 	} else if common.PathExists("/usr/bin/lsb_release") {
-		out, err := exec.Command("/usr/bin/lsb_release").Output()
+		lsb_release, err := exec.LookPath("/usr/bin/lsb_release")
+		if err != nil {
+			return ret, error
+		}
+		out, err := exec.Command(lsb_release).Output()
 		if err != nil {
 			return ret, err
 		}
diff --git a/internal/common/common_darwin.go b/internal/common/common_darwin.go
index 2c15b781fb0d945970aef84c641745209e079743..2b795d8720ea433d0bf2625844f28d1bbd03e98b 100644
--- a/internal/common/common_darwin.go
+++ b/internal/common/common_darwin.go
@@ -15,7 +15,12 @@ func DoSysctrl(mib string) ([]string, error) {
 	if err != nil {
 		return []string{}, err
 	}
-	out, err := exec.Command("/usr/sbin/sysctl", "-n", mib).Output()
+
+	sysctl, err := exec.LookPath("/usr/bin/getconf")
+	if err != nil {
+		return
+	}
+	out, err := exec.Command(sysctl, "-n", mib).Output()
 	if err != nil {
 		return []string{}, err
 	}
diff --git a/internal/common/common_freebsd.go b/internal/common/common_freebsd.go
index ef9ca56c9d6208574616bcc6afd7988d9a3c1eea..6408a979d883fb2ab68398d71ddc0b56a4aab8cc 100644
--- a/internal/common/common_freebsd.go
+++ b/internal/common/common_freebsd.go
@@ -15,7 +15,11 @@ func DoSysctrl(mib string) ([]string, error) {
 	if err != nil {
 		return []string{}, err
 	}
-	out, err := exec.Command("/sbin/sysctl", "-n", mib).Output()
+	sysctl, err := exec.LookPath("/sbin/sysctl")
+	if err != nil {
+		return
+	}
+	out, err := exec.Command(sysctl, "-n", mib).Output()
 	if err != nil {
 		return []string{}, err
 	}
diff --git a/mem/mem_darwin.go b/mem/mem_darwin.go
index 922b05cb4f60da498feb9ca7c1d8c33276c6974c..acf9a5f448e0d2f68a8f85bfdf764cc96469d58e 100644
--- a/mem/mem_darwin.go
+++ b/mem/mem_darwin.go
@@ -4,6 +4,7 @@ package mem
 
 import (
 	"encoding/binary"
+	"fmt"
 	"strconv"
 	"strings"
 	"syscall"
@@ -35,6 +36,8 @@ func SwapMemory() (*SwapMemoryStat, error) {
 		return ret, err
 	}
 
+	fmt.Println(swapUsage)
+
 	total := strings.Replace(swapUsage[2], "M", "", 1)
 	used := strings.Replace(swapUsage[5], "M", "", 1)
 	free := strings.Replace(swapUsage[8], "M", "", 1)
diff --git a/mem/mem_darwin_nocgo.go b/mem/mem_darwin_nocgo.go
index f3b085e8d194776829fc3ba1e8efeb929d9b4791..2008ce548dc721d4e7a869f65032ce3ab1b54483 100644
--- a/mem/mem_darwin_nocgo.go
+++ b/mem/mem_darwin_nocgo.go
@@ -12,7 +12,11 @@ import (
 
 // Runs vm_stat and returns Free and inactive pages
 func getVMStat(vms *VirtualMemoryStat) error {
-	out, err := exec.Command("vm_stat").Output()
+	vm_stat, err := exec.LookPath("vm_stat")
+	if err != nil {
+		return
+	}
+	out, err := exec.Command(vm_stat).Output()
 	if err != nil {
 		return err
 	}
diff --git a/process/process_posix.go b/process/process_posix.go
index 38f06e9e7536c308178f24fae466c6175eebb271..20db9e4c3a960159f0c5112b69cd92abab993963 100644
--- a/process/process_posix.go
+++ b/process/process_posix.go
@@ -64,7 +64,11 @@ func (p *Process) SendSignal(sig syscall.Signal) error {
 		sigAsStr = "KILL"
 	}
 
-	cmd := exec.Command("kill", "-s", sigAsStr, strconv.Itoa(int(p.Pid)))
+	kill, err := exec.LookPath("kill")
+	if err != nil {
+		return
+	}
+	cmd := exec.Command(kill, "-s", sigAsStr, strconv.Itoa(int(p.Pid)))
 	cmd.Stderr = os.Stderr
 	err := cmd.Run()
 	if err != nil {