1、使用read命令读取一行数据

while read mylinedo echo "LINE:"$mylinedone < datafile.txt

 2、使用read命令读取一行数据

cat datafile.txt | while read mylinedo  echo "LINE:"$mylinedone

 3、#读取一行数据

cat datafile.txt | while myline=$(line)do  echo "LINE:"$mylinedone

 4、#读取一行数据

while myline=$(line)do  echo "LINE:"$mylinedone < datafile.txt

 5、#使用read命令读取变量数据

cat datafile.txt | while read paraa parab paracdo echo "PARAA:"$paraa echo "PARAB:"$parab echo "PARAC:"$paracdone

 6、#使用read命令读取变量数据

while read paraa parab paracdo echo "PARAA:"$paraa echo "PARAB:"$parab echo "PARAC:"$paracdone < datafile.txt