在awk和echo之后删除多余的空间

这是回声：

$ NAME="foo"
$ echo $NAME $NAME
foo foo
$ echo $NAME$NAME
foofoo

没有空间：

$ echo ${NAME}BAR
fooBAR

echo outputs its arguments separated by spaces. You can modify the echo statement to:

echo "${NAME}-"

From bash(1):

 echo [-neE] [arg ...]
          Output the args, separated by spaces, followed by a newline. [...]

You could use printf too:

printf "%s-\n" "${NAME}"