v=`echo "" ; echo "" ; echo ""` echo "'$v'" v=`echo -n " ab "` echo "'$v'" v=`echo -n " "` echo "'$v'" v=`echo -n ""` echo "'$v'" v=`echo ""` echo "'$v'" v=`echo` echo "'$v'" v=`echo ababababababab` echo "'$v'" v=`echo "ababababababab "` echo "'$v'" v=`echo -n "ababababababab "` echo "'$v'" v=`echo -ne "abababa\nbababab "` echo "'$v'" v="`echo -e '\n\n\n\n'`" echo "'$v'"