Writing To A Specific Text File Line

[mokonji]

In a program I am writing I need to be able to write to the end of a specific line in a textfile. I'm not sure of any particular way to do this apart from perhaps rewriting the whole textfile which would be a pain to do. Does anyone know of a simpler way of how to do this?

[Fubarable]

If you think about how text files are stored on a hard drive, can you picture any way any computer program can write to a specific point in the file without over writing the file? If you tried to write data in at a specific point in the file, you'd be over-writing any data that normally would follow the starting point, and that won't do.

Unless you're talking about randomaccess files (and I don't recommend that here), you're probably better off over-writing the entire file.