需要删除一行？

Need to remove a row?

youdao

因此，您可能会希望防止最后一行被删除。

Therefore, you may wish to prevent deletion of the last row.

youdao

若要删除文件的最后一行，可以使用以下命令。

To delete the last line of a file.

youdao

若要删除文件中的第一行，可以使用以下命令。

To delete the first line in a file.

youdao

若要删除从第一行直到第一个空白行的所有内容，可以使用以下命令。

To delete from the first line until the first blank line.

youdao

这一行有相同的效果，但是冗余被删除了。

This single line has the same effect, but redundancy is removed.

youdao

我知道读了之后，文件指针会指向下一行，关键是我要把读过的删除掉。

I think you only read and delete some lines in the file.

youdao

我知道读了之后，文件指针会指向下一行，关键是我要把读过的删除掉。

I think you only read and delete some lines in the file.

youdao