code
macname@localhost Desktop % cat test.sh while read line;do echo $line; done < a.txt macname@localhost Desktop % macname@localhost Desktop % cat a.txt 1dededede 2dedefrfr 3frhvfvfvf 4frfrdede 5frfrfrfrf 6frfrede 7jukitttt 8csxssss 9zaxss 10swwww 11ssssss 12aaaaa macname@localhost Desktop % ./test.sh 1dededede 2dedefrfr 3frhvfvfvf 4frfrdede 5frfrfrfrf 6frfrede 7jukitttt 8csxssss 9zaxss 10swwww 11ssssss 12aaaaa macname@localhost Desktop %
原文：https://www.cnblogs.com/sea-stream/p/14038715.html