Calculating the size of /

[Gilles Gravier]

Adding -x to du tells it so skip directories on different filesystems...
Should give you what you want.

> sudo du -shcx /

Gilles.



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
>
>