Want to do something like “cp big_file copy_of_big_file” or “tar xfz big_tarball.tar.gz” but without thrashing your cache?

Enrico Zini has a nice little LD_PRELOAD called nocache.

$ nocache tar xfz foo.tar.gz

Goes well with libeatmydata. A pair of tools for compensating for your Operating System casually hating you.

I imagine people will love this when taking database backups.