fix build bugs.

cpu/cpu_linux.go

@@ -19,7 +19,7 @@ func init() {
 	if err != nil {
 		return
 	}
-	out, err := exec.Command(getcon, "CLK_TCK").Output()
+	out, err := exec.Command(getconf, "CLK_TCK").Output()
 	// ignore errors
 	if err == nil {
 		i, err := strconv.ParseFloat(strings.TrimSpace(string(out)), 64)

host/host_linux.go

@@ -165,7 +165,7 @@ func getLSB() (*LSB, error) {
 	} else if common.PathExists("/usr/bin/lsb_release") {
 		lsb_release, err := exec.LookPath("/usr/bin/lsb_release")
 		if err != nil {
-			return ret, error
+			return ret, err
 		}
 		out, err := exec.Command(lsb_release).Output()
 		if err != nil {

internal/common/common_darwin.go

@@ -18,7 +18,7 @@ func DoSysctrl(mib string) ([]string, error) {
 
 	sysctl, err := exec.LookPath("/usr/bin/getconf")
 	if err != nil {
-		return
+		return []string{}, err
 	}
 	out, err := exec.Command(sysctl, "-n", mib).Output()
 	if err != nil {

internal/common/common_freebsd.go

@@ -17,7 +17,7 @@ func DoSysctrl(mib string) ([]string, error) {
 	}
 	sysctl, err := exec.LookPath("/sbin/sysctl")
 	if err != nil {
-		return
+		return []string{}, err
 	}
 	out, err := exec.Command(sysctl, "-n", mib).Output()
 	if err != nil {

mem/mem_darwin.go

@@ -4,7 +4,6 @@ package mem
 
 import (
 	"encoding/binary"
-	"fmt"
 	"strconv"
 	"strings"
 	"syscall"
@@ -36,8 +35,6 @@ 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)

net/net_darwin.go

@@ -17,7 +17,7 @@ import (
 // lo0   16384 ::1/128     ::1                 869107     -  169411755   869107     -  169411755     -   -
 // lo0   16384 127           127.0.0.1         869107     -  169411755   869107     -  169411755     -   -
 func IOCounters(pernic bool) ([]IOCountersStat, error) {
-	netstat, err := exec.LookPath("/usr/bin/netstat")
+	netstat, err := exec.LookPath("/usr/sbin/netstat")
 	if err != nil {
 		return nil, err
 	}

process/process_posix.go

@@ -66,11 +66,11 @@ func (p *Process) SendSignal(sig syscall.Signal) error {
 
 	kill, err := exec.LookPath("kill")
 	if err != nil {
-		return
+		return err
 	}
 	cmd := exec.Command(kill, "-s", sigAsStr, strconv.Itoa(int(p.Pid)))
 	cmd.Stderr = os.Stderr
-	err := cmd.Run()
+	err = cmd.Run()
 	if err != nil {
 		return err
 	}