diff --git a/scripts/monitor.sh b/scripts/monitor.sh
index 28cf935..24a5319 100755
--- a/scripts/monitor.sh
+++ b/scripts/monitor.sh
@@ -15,6 +15,7 @@
 
 # This script sets up a watch with information that is valuable when
 # developing voltha with k8s
+SCRIPTPATH="$( cd "$(dirname "$0")" >/dev/null 2>&1 ; pwd -P )"
 
 CMD_KEY=cmd
 if [ "$ARCH" == "Darwin" ]; then
@@ -23,5 +24,5 @@
 
 kubectl get --all-namespaces pods,svc && echo "" \
     &&  kubectl  describe --all-namespaces  pods | grep Image: | grep voltha | sed -e "s/^ *//g" -e "s/: */: /g"  && echo "" \
-    && echo "DB SIZE: $(./scripts/etcd-db-size.sh)" && echo "" \
+    && echo "DB SIZE: $($SCRIPTPATH/etcd-db-size.sh)" && echo "" \
     && echo "RSS SIZE: $(ps -eo rss,pid,$CMD_KEY | grep /usr/local/bin/etcd | grep -v grep | cut -d\  -f1 | numfmt --to=iec | tr '\n' ' ' )"
diff --git a/voltha b/voltha
index af9dc0e..84abd2a 100755
--- a/voltha
+++ b/voltha
@@ -142,10 +142,10 @@
 function parseDuration() {
     local DUR=$1
     local RESULT=0
-    local TERMS=$(echo $DUR | sed -e 's/\([sSmMhHdD]\)/\1 /g' -e 's/,$//g')
+    local TERMS=$(echo $DUR | sed -Ee 's/([sSmMhHdD])/\1 /g' -e 's/,$//g')
     for TERM in $TERMS; do
-       local VALUE=$(echo $TERM | sed -e 's/\([0-9]\+\)[sSmMhHdD]/\1/')
-       local UNIT=$(echo $TERM | sed -e 's/[0-9]\+\([sSmMhHdD]\)/\1/')
+       local VALUE=$(echo $TERM | sed -Ee 's/([0-9]+)[sSmMhHdD]/\1/')
+       local UNIT=$(echo $TERM | sed -Ee 's/[0-9]+([sSmMhHdD])/\1/')
        case $UNIT in
           s|S)
              RESULT=$(($RESULT + $VALUE)) ;;