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Re: which files took the space



On Mar 4, 2016, at 5:39 AM, Gene Heskett <gheskett@shentel.net> wrote:

> On Friday 04 March 2016 03:39:03 jdd wrote:
> 
>> Le 04/03/2016 08:38, tomas@tuxteam.de a écrit :
>>> If memory serves, long, long time ago, "mount" (the system call)
>>> refused to comply unless the directory was empty (kernel 2.6.mumble;
>>> so long ago. Expect bit flips and glitches in my wetware, yadda).
>> 
>> if it existed, it's much older than that, never seen it since 1997...
> 
> Me either, and I go back to '97 myself in linux usage.
> 
>> man mount:
>> 
>> This  tells  the  kernel  to attach the filesystem found on device
>> (which is of type type) at the directory dir.  The previous contents
>> (if any) and owner and mode of dir become  invisible,  and  as  long 
>> as this  filesystem  remains mounted, the pathname dir refers to the
>> root of the filesystem on device."

This behavior (mounted filesystems hiding the files in the underlying directory) goes all the way back to Bell Labs UNIX(tm) v7 (at least -- I never had a chance to use v6 or earlier) in the 1970's.  It's in the POSIX standard.

Rick

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