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diff --git a/updateval.sh b/updateval.sh
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+#!/bin/sh
+# File: /root/updateval.sh
+# Package: deployscripts
+# Author: bgstack15
+# Startdate: 2016-07-27
+# Title: Script that Updates/Adds Value
+# Purpose: Supposed to allow idempotent and programmatic modifications to config files
+# History: 2016-08-01 last modified main content
+#    2016-10-11 Replaced in bgscripts with python3 script. The shell version is maintained for the deployscripts package.
+# Usage: ./updateval.sh /etc/rc.conf "^ntpd_enable=.*" 'ntpd_enable="YES"' --apply
+# Reference:
+#    "Building the FreeBSD 10.3 Template.docx"
+# Improve:
+# Document: Below this line
+
+infile="${1}"
+searchstring="${2}"
+destinationstring="${3}"
+doapply="${4}"
+tmpfile="$( mktemp )"
+lineexists=0
+
+#determine sed command
+case "$( uname -s )" in
+   FreeBSD) sedcommand=gsed; formatstring="-f %p";;
+   Linux|*) sedcommand=sed; formatstring="-c %a";;
+esac
+
+#linenum=$( grep -niE "${searchstring}" "${infile}" | awk -F: '{print $1;}' )
+linenum=$( awk "/${searchstring}/ { print FNR; }" "${infile}" )
+#echo "linenum=\"${linenum}\""
+for word in ${linenum};
+do
+   #echo "word=${word}"
+   if test -n "${word}" && test ${word} -ge 0;
+   then
+      # line number is valid
+      lineexists=1
+      #echo "##### line number is valid"
+      if test "${doapply}" = "--apply";
+      then
+         #echo $sedcommand -i -e "s/${searchstring}/${destinationstring}/;" ${infile}
+         $sedcommand -i -e "s/${searchstring}/${destinationstring}/;" ${infile}
+      else
+         #echo $sedcommand -e "s/${searchstring}/${destinationstring}/;" ${infile}
+         $sedcommand -e "s/${searchstring}/${destinationstring}/;" ${infile}
+      fi
+   fi
+done
+if test "${lineexists}x" = "0x";
+then
+   # must add the value
+   #echo "##### must add the value"
+   if test "${doapply}" = "--apply";
+   then
+      { cat "${infile}"; printf "${destinationstring}\n"; } > ${tmpfile}
+      _perms=$( stat ${formatstring} "${infile}" | tail -c5 )
+      mv "${tmpfile}" "${infile}"
+      chmod "${_perms}" "${infile}"
+   else
+      { cat "${infile}"; printf "${destinationstring}\n"; }
+   fi
+fi