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The output of your command "$ df -h" is:

Filesystem                         Size  Used Avail Use% Mounted on
/dev/mapper/ubuntu--vg-ubuntu--lv   98G   15G   79G  16% /
tmpfs                              3.1G  1.8M  3.1G   1% /run
tmpfs                              1.6G  112K  1.6G   1% /run/user/1000
tmpfs                              3.1G  1.8M  3.1G   1% /run/user
/dev/mapper/ubuntu--vg-lv--1       194G   92G   93G  50% /home
tmpfs                              7.6G   21M  7.6G   1% /tmp
/dev/mapper/ubuntu--vg-lv--0       393G   22G  352G   6% /var
tmpfs                              4.0M     0  4.0M   0% /dev
tmpfs                              7.6G  8.0K  7.6G   1% /dev/shm