When all the data have been written, set the eof (end-of-file) argument.
当所有数据全部写入之后,就需要设置eof(文件结束参数)。
3
I use "_eof_" (EOF is short for "EndOfFile") because it is traditional, but you can use anything, as long as it does not conflict with a bash reserved word.
我使用“ _ E OF _ ” (EOF表示文件的末尾),是因为,这是一个传统的表示形式,但是,你可以使用任何字符穿,只要你所用的字符串不跟bash的保留字相冲突就可以了。