shell 中文件操作接口¶
读行¶
while read line ;do
#or while read -r line ;do
echo $line
done < $1
cat $1 | while read line ;do
echo $line
done
使用for时，结果略有不同, for以空格为一行
for line in $(cat $1) ;do
echo $line
done
reference¶
https://bash.cyberciti.biz/guide/Reads_from_the_file_descriptor_(fd)