typo

git-svn-id: file:///home/svn/framework3/trunk@12829 4d416f70-5f16-0410-b530-b9f4589650da

lib/msf/core/post/linux/system.rb

@@ -91,7 +91,7 @@ module System
 	# Keys are name, uid, gid, info, dir and shell
 	def get_users
         users = []
-        cmd_out = `cat /etc/passwd`.split("\n")
+        cmd_out = cmd_exec("cat /etc/passwd").split("\n")
         cmd_out.each do |l|
 			entry = {}
 			user_field = l.split(":")
@@ -110,7 +110,7 @@ module System
 	# Keys are name, gid and users
 	def get_groups
         groups = []
-        cmd_out = `cat /etc/group`.split("\n")
+        cmd_out = cmd_exec("cat /etc/group").split("\n")
         cmd_out.each do |l|
 			entry = {}
 			user_field = l.split(":")