shell 求助

ligana

echo $CXBASE.[0-9].[0-9].[0-9]* | tr ' ' '\012' \
                | sort $sort_flag -r -t. +1 -2 +2 -3 +3 -4 \
                | grep -v 'busy' \
                | head -1`

这段脚本会出错，为什么呀
echo $CXBASE.[0-9].[0-9].[0-9]* | tr ' ' '\012' \
                | sort $sort_flag -r -t. +1 -2 +2 -3 +3 -4 \
                | grep -v 'busy' \
                | head -1`
./fluent: line 3600: unexpected EOF while looking for matching ``'
./fluent: line 3878: syntax error: unexpected end of file

yongjian

don't see the other `. Better use $() structure.