If I look at "properties" under /home/user/Desktop in the GUI (nautilus), it shows free space as 137.3 GB. However, if I execute df . -kh it shows 128 GB available.

Why are these different? Which one should I believe if I need the exact free space of PWD?

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1 Answer

One program is showing the free space in decimal (10^9) gigabyes (GB), the other is showing it in binary (2^30) gigabytes (GiB); 128 GiB = 137.4 GB. For df you can specify whether you want decimal or binary units:

$ df -h . # -h requests binary units
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/Serverax-Home 9.3G 420M 8.4G 5% /home
$ df -H . # -H requests decimal units
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/Serverax-Home 10G 440M 9.0G 5% /home

See man df for details.

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