有以下的shell程序：
#!bin/bash
deptname=$(mysql mydatabase -e"select deptname as '' from dept where deptno=4;")
echo "--------------"
deptnamebak=$(echo -n "$deptname")
#echo "%%%%%%%%%%%%%%%%%%%%%%%"
echo "${deptnamebak}"
但是查询结果总是有回车。如
----------------
deptname
如何消除上面的回车，请指教，谢谢
