bypassmount

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This utility was been written to make "du" bypass mountpoint to be able to compare used space values of "du" and "df".

However you can use "unshare" and "umount" combination instead of this utility. So the "bypassmount" may be useful for:

bypassing broken mountpoints (it doesn't do "stat()" and a lot of other garbage before the "umount2()");
bypassing mountpoints in one-line shell scripts.

You can run shell with bypassing the mountpoint with

bypassmount /path/to/the/mountpoint

Or you can run some command with bypassing the mountpoint, for example:

bypassmount -q /mnt/backup -- du --depth 1 -s /mnt/backup/

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