ttcn3-tcpdump-start.sh: Log command used to record packets

Change-Id: I8bebe53e630ba43e368700dc857b0e00d3cc7c56
diff --git a/ttcn3-tcpdump-start.sh b/ttcn3-tcpdump-start.sh
index 8564cd5..8b75d0e 100755
--- a/ttcn3-tcpdump-start.sh
+++ b/ttcn3-tcpdump-start.sh
@@ -85,6 +85,7 @@
 # Log stderr to CMD_OUTFILE and a dedicated error log file
 tee $CMD_OUTFILE < $FIFO > $CMD_OUTFILE_ERR &
 CMD_STR="$CMD -s 1520 -n -i any -w \"$TTCN3_PCAP_PATH/$TESTCASE.pcap\" >$CMD_OUTFILE 2>$FIFO &"
+echo "$CMD_STR"
 eval $CMD_STR
 # $CMD -s 1520 -n -i any -w \"$TTCN3_PCAP_PATH/$TESTCASE.pcap\" >$CMD_OUTFILE &
 PID=$!