From 613ada987d2da5d1bcbbd7d4fd40ef0ab69132c2 Mon Sep 17 00:00:00 2001
From: Sean Chittenden <sean@chittenden.org>
Date: Thu, 11 Aug 2016 00:48:24 -0700
Subject: [PATCH] Add DoSysctrl() to Linux's common utilities.

---
 internal/common/common_linux.go | 26 +++++++++++++++++++++++++-
 1 file changed, 25 insertions(+), 1 deletion(-)

diff --git a/internal/common/common_linux.go b/internal/common/common_linux.go
index 06fe4cb..9568106 100644
--- a/internal/common/common_linux.go
+++ b/internal/common/common_linux.go
@@ -2,7 +2,31 @@
 
 package common
 
-import "os"
+import (
+	"os"
+	"os/exec"
+	"strings"
+)
+
+func DoSysctrl(mib string) ([]string, error) {
+	err := os.Setenv("LC_ALL", "C")
+	if err != nil {
+		return []string{}, err
+	}
+	sysctl, err := exec.LookPath("/sbin/sysctl")
+	if err != nil {
+		return []string{}, err
+	}
+	out, err := exec.Command(sysctl, "-n", mib).Output()
+	if err != nil {
+		return []string{}, err
+	}
+	v := strings.Replace(string(out), "{ ", "", 1)
+	v = strings.Replace(string(v), " }", "", 1)
+	values := strings.Fields(string(v))
+
+	return values, nil
+}
 
 func NumProcs() (uint64, error) {
 	f, err := os.Open(HostProc())