Change the command used for os detection from uname to freebsd-version

README.ja.md

@@ -395,7 +395,7 @@ web/app server in the same configuration under the load balancer
 | RHEL        |             5, 6, 7|
 | CentOS      |             5, 6, 7|
 | Amazon Linux|                 All|
-| FreeBSD     |                  10|
+| FreeBSD     |              10, 11|
 | Raspbian    |     Wheezy, Jessie |
 
 ----

README.md

@@ -396,7 +396,7 @@ If there is a staging environment with the same configuration as the production
 | RHEL        |             5, 6, 7|
 | CentOS      |             5, 6, 7|
 | Amazon Linux|                 All|
-| FreeBSD     |                  10|
+| FreeBSD     |              10, 11|
 | Raspbian    |     Wheezy, Jessie |
 
 ----

scan/freebsd.go

@@ -48,7 +48,7 @@ func detectFreebsd(c config.ServerInfo) (itsMe bool, bsd osTypeInterface) {
 
 	if r := exec(c, "uname", noSudo); r.isSuccess() {
 		if strings.Contains(r.Stdout, "FreeBSD") == true {
-			if b := exec(c, "uname -r", noSudo); b.isSuccess() {
+			if b := exec(c, "freebsd-version", noSudo); b.isSuccess() {
 				rel := strings.TrimSpace(b.Stdout)
 				bsd.setDistro("FreeBSD", rel)
 				return true, bsd