fadvise

Preload a file or directory into cache

$ fadvise [-a|--advice] willneeded [path/to/file_or_directory]

$ fadvise [path/to/file]

$ fadvise [-h|--help]

fadvise [options] files

fadvise controls Linux file caching behavior using the posix_fadvise() system call. It can preload files into cache or suggest the kernel drop files from cache.
Useful for optimizing I/O performance and managing memory usage.

-a, --advice advice

Caching advice: willneeded, dontneed, noreuse

Display help

Part of util-linux. Advice is a hint to the kernel, not a command. Actual behavior depends on system memory pressure.

fincore(1), vmtouch(1)