Calculating the size of /

[Jim Byrnes]

On 09/10/2012 02:15 PM, Gilles Gravier wrote:
> Adding -x to du tells it so skip directories on different filesystems...
> Should give you what you want.
>
>> sudo du -shcx /
>
> Gilles.
>
>

I don't have any other file systems that I know of except gvfs which to 
my knowledge have never used..

  sudo du -shcx /
du: cannot access `/home/xxx/.gvfs': Permission denied
105G	/
105G	total
$ du -shcx /home
64G	/home
64G	total

Unless I used it wrong -x doesn't show anything different.

Regards,  Jim
>
> On 10/09/2012 21:03, Jim Byrnes wrote:
>> In another thread I was trying to calculate how much disk space to
>> allocate to / if I did a fresh install and this time setup  a separate
>> /home partition.
>>
>> To get an idea of how much was outside of the home folder on my
>> present install I did:
>>
>> sudo du -shc /  =>  105GB
>> du -shc /home   =>  64GB
>>
>> This led me to believe I had 105GB - 64GB = 41GB that would be in /.
>>
>> Colin suggested I run Disk Usage Analyzer:
>>
>> Total filesystem capacity: 264.7GB(used: 104.5GB avail: 160.2GB
>>
>> /        100%        75.3GB
>> home        84.1%        63.3GB
>> usr        6.7%        5.0GB
>> var        5.8%        4.4GB
>> lib        2.1%        1.6GB
>> opt        1.0%        762.2MB
>> boot        0.3%        194.6MB
>>
>> Everything else was 0.0%
>>
>> So this seems to say that if I had a separate /home on this machine
>> that / would be 12GB not the 41GB calculated above.
>>
>> So what accounts for the difference of 29.2GB between the used of
>> 104.5GB and / of 75.3GB?
>>
>> The 12GB and 29.2GB = the 41GB I originally calculated would be needed
>> for /.  12GB seems to be more in line with what others reported as the
>> size needed for /.
>>
>> Regards,  Jim
>>
>>
>