如何覆盖tarball中的文件

Question

I've got an edge case where two files have the same name but different contents and are written to the same tarball. This causes there to be two entries in the tarball. I'm wondering if there's anything I can do to make the tar overwrite the file if it already exists in the tarball as opposed to creating another file with the same name.

Answer 1

No way as the first file have already been written when you ask to write the second one and the stream has advanced the position. Remember tar files are sequentially accessed.

You should do deduplication before starting to write.