diff --git a/.vim/templates/sh b/.vim/templates/sh
index ff9a762..861e200 100644
--- a/.vim/templates/sh
+++ b/.vim/templates/sh
@@ -16,7 +16,15 @@
 
 set -o nounset                               # Treat unset variables as an error
 
-# Check for empty argument
+# set variables 
+declare -r TRUE=0
+declare -r FALSE=1
+
+##################################################################
+# Purpose: Check for empty argument
+# Arguments: at least one
+# Return: Either error message or exit with an error code 1
+##################################################################
 if [ -z "${1:-}" ]; then
     arg="undefined"
     echo "Required Argument Missing"
@@ -25,9 +33,11 @@ else
     arg=$1
 fi
 
-# Log Echo: send output to screen and specified file
+##################################################################
+# Purpose: Send output to screen and specified file
+# Requires: define to `logfile` variable to send out put to logfile 
 # Usage: logecho "Log Message"
-# define logfile and path to enable logging to file
+##################################################################
 logfile=
 logecho() {
     echo "${1}"
@@ -35,3 +45,15 @@ logecho() {
         echo "${1}" >> "${logfile}"
     fi
 }
+
+##################################################################
+# Purpose: Return true if script is executed by the root user
+# Arguments: none
+# Return: True or False
+# Usage: is_root && echo "root" || echo "not root"
+##################################################################
+function is_root() 
+{
+   [ $(id -u) -eq 0 ] && return $TRUE || return $FALSE
+}
+