Some uses of LD_PRELOAD off the top of my head: - GNU stdbuf (BSDs use an env-var instead of hijacking libc) - fakeroot - gprofng's data collector - For a l

Some uses of LD_PRELOAD off the top of my head: - GNU stdbuf (BSDs use an env-var instead of hijacking libc) - fakeroot - gprofng's data collector - For a long time it was necessary to use LD_PRELOADto hack around a bug in flashplayer because flashplayer used memcpy when it should have used memmove.