linux file still exists. rename it.

host_freebsd.go

+// +build freebsd
+
+package gopsutil
+
+import (
+	"os"
+	"strings"
+	"strconv"
+)
+
+func HostInfo() (HostInfoStat, error) {
+	ret := HostInfoStat{}
+
+	hostname, err := os.Hostname()
+	ret.Hostname = hostname
+	if err != nil {
+		return ret, err
+	}
+
+	return ret, nil
+}
+
+
+func Boot_time() (int64, error){
+	values,err := do_sysctrl("kern.boottime")
+	if err != nil {
+		return 0, err
+	}
+	// ex: { sec = 1392261637, usec = 627534 } Thu Feb 13 12:20:37 2014
+	v := strings.Replace(values[2], ",", "", 1)
+
+	boottime, err := strconv.ParseInt(v, 10, 64)
+	if err != nil {
+		return 0, err
+	}
+
+	return boottime, nil
+}

host_unix.go → host_linux.go

-// +build linux freebsd
+// +build linux
 
 package gopsutil
 

load_freebsd.go

@@ -3,19 +3,14 @@
 package gopsutil
 
 import (
-	"os/exec"
 	"strconv"
-	"strings"
 )
 
 func LoadAvg() (LoadAvgStat, error) {
-	out, err := exec.Command("/sbin/sysctl", "-n", "vm.loadavg").Output()
+	values,err := do_sysctrl("vm.loadavg")
 	if err != nil {
 		return LoadAvgStat{}, err
 	}
-	v := strings.Replace(string(out), "{ ", "", 1)
-	v = strings.Replace(string(v), " }", "", 1)
-	values := strings.Fields(string(v))
 
 	load1, err := strconv.ParseFloat(values[0], 64)
 	if err != nil {

mem_linux.go

-// +build freebsd linux
+// +build linux
 
 package gopsutil