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user877329
Asked: 2017-12-11 03:47:23 +0800 CST

Find out the total system installation size

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An Ubuntu installation may vary hugely in size, depending on the installed packages. Is there any quick way to check how mutch disk the current installation uses.

I want to know, because I plan to build a new PC, with a smaller and fast SSD for / and a large mechanical drive for /home (I have need for a large home directory), to decresase boot time. To solve this problem I would like to know the size of my current installation, so I know how large the system file system needs to be for my use.

apt

2 Answers

  1. Try df -h.

    It will show information in the form

    Filesystem      Size  Used Avail Use% Mounted on
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  2. Best Answer

    This should work on any GNU/Linux system:

    (sudo du -b -s $(ls | grep -v 'home\|media\|mnt\|proc\|sys\|run') ) | awk -M '{s+=$1} END {print s}'

    I find that my current installation is 9 892 901 210 bytes, or approximately 10 GB.

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