Google doesn't return a way to do this either, as most forum posts argue against such action. I would also consider disabling file cache system-wide, but thats not my first preference, this is just for the one file. Any idea on how to read a file directly from a disk, or how to disable filesystem cache for a file/directory/mount point? The flag seems not to be supported for files. You can create, copy, move, rename, and delete files with high flexibility. It allows you to view the contents of your SD cards, USB drives, and hard drives with a simple UI. Dolphin Dolphin is a file manager of KDE that you can install for free. I have tried using the cat command, as well as dd if=/path/to/file -iflag=direct, but that doesn't work either. Every Linux file manager will include its features, pros & cons, and installation process.

I can drop_caches which then returns the latest data in that file, but this process drops all file caches on SERVER1, which is not what I want to do, and it takes too long to process. SERVER1 is accessing the filesystem cache, and not showing new data in the file. The file poling is <100ms, which is fast, but lets just say it's necessary. I have shared storage which is mounted (read-only) on SERVER1, and mounted (read-write) on SERVER2.

Linux file reader