diff --git a/targets/PROJECTS/GENERIC-LTE-EPC/start_enb.bash b/targets/PROJECTS/GENERIC-LTE-EPC/start_enb.bash
index 261dfbd07f02e44bf469a5eabec99834b390ea74..a6e5577c30218a507b8c791f29d7d0fbe938ebd3 100755
--- a/targets/PROJECTS/GENERIC-LTE-EPC/start_enb.bash
+++ b/targets/PROJECTS/GENERIC-LTE-EPC/start_enb.bash
@@ -156,18 +156,18 @@ fi
 
 cd $THIS_SCRIPT_PATH
 
-ethtool –A $ENB_INTERFACE_NAME_FOR_S1_MME autoneg off rx off tx off
-ethtool –G $ENB_INTERFACE_NAME_FOR_S1_MME rx 4096 tx 4096
-ethtool –C $ENB_INTERFACE_NAME_FOR_S1_MME rx-usecs 3
-ifconfig $ENB_INTERFACE_NAME_FOR_S1_MME txqueuelen 1000
+bash_exec "ethtool -A $ENB_INTERFACE_NAME_FOR_S1_MME autoneg off rx off tx off"
+bash_exec "ethtool -G $ENB_INTERFACE_NAME_FOR_S1_MME rx 4096 tx 4096"
+bash_exec "ethtool -C $ENB_INTERFACE_NAME_FOR_S1_MME rx-usecs 3"
+bash_exec "ifconfig $ENB_INTERFACE_NAME_FOR_S1_MME txqueuelen 1000"
 
 if [ x$ENB_INTERFACE_NAME_FOR_S1_MME != x$ENB_INTERFACE_NAME_FOR_S1U ]; then 
     nohup tshark -i $ENB_INTERFACE_NAME_FOR_S1_MME -w $PCAP_LOG_FILE &
 else
-    ethtool –A $ENB_INTERFACE_NAME_FOR_S1U autoneg off rx off tx off
-    ethtool –G $ENB_INTERFACE_NAME_FOR_S1U rx 4096 tx 4096
-    ethtool –C $ENB_INTERFACE_NAME_FOR_S1U rx-usecs 3
-    ifconfig $ENB_INTERFACE_NAME_FOR_S1U txqueuelen 1000
+    bash_exec "ethtool -A $ENB_INTERFACE_NAME_FOR_S1U autoneg off rx off tx off"
+    bash_exec "ethtool -G $ENB_INTERFACE_NAME_FOR_S1U rx 4096 tx 4096"
+    bash_exec "ethtool -C $ENB_INTERFACE_NAME_FOR_S1U rx-usecs 3"
+    bash_exec "ifconfig $ENB_INTERFACE_NAME_FOR_S1U txqueuelen 1000"
 
     nohup tshark -i $ENB_INTERFACE_NAME_FOR_S1_MME -i $ENB_INTERFACE_NAME_FOR_S1U -w $PCAP_LOG_FILE &
 fi
diff --git a/targets/PROJECTS/GENERIC-LTE-EPC/start_epc.bash b/targets/PROJECTS/GENERIC-LTE-EPC/start_epc.bash
index 0406b6d6f5102647d8515f4362034f917f3ca5a0..aaeec9df1239509d8ba16efb339d3200ba7d8f10 100755
--- a/targets/PROJECTS/GENERIC-LTE-EPC/start_epc.bash
+++ b/targets/PROJECTS/GENERIC-LTE-EPC/start_epc.bash
@@ -337,16 +337,16 @@ echo_success "MME_INTERFACE_NAME_FOR_S1_MME : $MME_INTERFACE_NAME_FOR_S1_MME"
 echo_success "MME_INTERFACE_NAME_FOR_S6A    : $MME_INTERFACE_NAME_FOR_S6A"
 
 # see http://www.coverfire.com/articles/queueing-in-the-linux-network-stack/
-ethtool –A $MME_INTERFACE_NAME_FOR_S1_MME autoneg off rx off tx off
-ethtool –G $MME_INTERFACE_NAME_FOR_S1_MME rx 4096 tx 4096
-ethtool –C $MME_INTERFACE_NAME_FOR_S1_MME rx-usecs 3
-ifconfig   $MME_INTERFACE_NAME_FOR_S1_MME txqueuelen 1000
+bash_exec "ethtool -A $MME_INTERFACE_NAME_FOR_S1_MME autoneg off rx off tx off"
+bash_exec "ethtool -G $MME_INTERFACE_NAME_FOR_S1_MME rx 4096 tx 4096"
+bash_exec "ethtool -C $MME_INTERFACE_NAME_FOR_S1_MME rx-usecs 3"
+bash_exec "ifconfig   $MME_INTERFACE_NAME_FOR_S1_MME txqueuelen 1000"
 
 if [ x$MME_INTERFACE_NAME_FOR_S1_MME != x$SGW_INTERFACE_NAME_FOR_S1U_S12_S4_UP ]; then 
-    ethtool –A $SGW_INTERFACE_NAME_FOR_S1U_S12_S4_UP autoneg off rx off tx off
-    ethtool –G $SGW_INTERFACE_NAME_FOR_S1U_S12_S4_UP rx 4096 tx 4096
-    ethtool –C $SGW_INTERFACE_NAME_FOR_S1U_S12_S4_UP rx-usecs 3
-    ifconfig   $SGW_INTERFACE_NAME_FOR_S1U_S12_S4_UP txqueuelen 1000
+    bash_exec "ethtool -A $SGW_INTERFACE_NAME_FOR_S1U_S12_S4_UP autoneg off rx off tx off"
+    bash_exec "ethtool -G $SGW_INTERFACE_NAME_FOR_S1U_S12_S4_UP rx 4096 tx 4096"
+    bash_exec "ethtool -C $SGW_INTERFACE_NAME_FOR_S1U_S12_S4_UP rx-usecs 3"
+    bash_exec "ifconfig   $SGW_INTERFACE_NAME_FOR_S1U_S12_S4_UP txqueuelen 1000"
 fi
 
 if [ x$MME_INTERFACE_NAME_FOR_S1_MME == x$MME_INTERFACE_NAME_FOR_S6A ]; then