这不是您要找的东西吗？
while read -r line < /dev/ttyS2; do # $line is the line read, do something with it echo $result > /dev/ttyS2done
这不是您要找的东西吗？
while read -r line < /dev/ttyS2; do # $line is the line read, do something with it echo $result > /dev/ttyS2done
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