Question

What is the fastest way to move to 100 bytes before the end of a file when editing it using system calls?

Answer 1

Hey, you haven't specified the specific language for this problem. So, gave some brief information about it:

1. For C / C++: To transfer or move 100 bytes before ending file you can use fseek, lseek.                    Move from specific position: SEEK_SET, SEEK_CUR, SEEK_END.                               lseek is the fastest to move content.
2. For JAVA: One of the best ways is that-                                                                                       #make an appropriately sized buffer                                                                                         #perform I/O operations and fill the buffer using InputStream                                                   #manipulate the buffer                                                                                                     #perform I/O operations and flush the buffer to the disk using OutputStream
3. In python, you can use Buffered Binary File Types.

You can also use one of the systems calls called UNIX System Calls.