Segue o conteúdo depois de df -h:
tmpfs 3,9G 32K 3,9G 1% /dev/shm
tmpfs 5,0M 4,0K 5,0M 1% /run/lock
tmpfs 3,9G 0 3,9G 0% /sys/fs/cgroup
/dev/loop0 1,2M 1,2M 0 100% /snap/ark/6
/dev/loop2 100M 100M 0 100% /snap/core/11798
/dev/loop3 100M 100M 0 100% /snap/core/11993
/dev/loop4 56M 56M 0 100% /snap/core18/2246
/dev/loop5 56M 56M 0 100% /snap/core18/2253
/dev/loop6 62M 62M 0 100% /snap/core20/1242
/dev/loop1 128K 128K 0 100% /snap/bare/5
/dev/loop7 165M 165M 0 100% /snap/gnome-3-28-1804/161
/dev/loop8 62M 62M 0 100% /snap/core20/1270
/dev/loop10 256K 256K 0 100% /snap/gtk2-common-themes/13
/dev/loop9 66M 66M 0 100% /snap/gtk-common-themes/1515
/dev/loop11 261M 261M 0 100% /snap/kde-frameworks-5-core18/32
/dev/loop12 3,5M 3,5M 0 100% /snap/mjpg-streamer/42
/dev/loop15 248M 248M 0 100% /snap/gnome-3-38-2004/87
/dev/loop13 66M 66M 0 100% /snap/gtk-common-themes/1519
/dev/loop16 363M 363M 0 100% /snap/obs-studio/1276
/dev/loop14 256K 256K 0 100% /snap/gtk2-common-themes/9
/dev/loop17 219M 219M 0 100% /snap/gnome-3-34-1804/77
/dev/loop18 83M 83M 0 100% /snap/shotcut/571
/dev/loop20 430M 430M 0 100% /snap/stellarium-daily/1042
/dev/loop19 83M 83M 0 100% /snap/shotcut/568
/dev/loop21 51M 51M 0 100% /snap/snap-store/547
/dev/loop22 43M 43M 0 100% /snap/snapd/14066
/dev/loop23 44M 44M 0 100% /snap/snapd/14295
/dev/loop24 55M 55M 0 100% /snap/snap-store/558
/dev/loop25 219M 219M 0 100% /snap/gnome-3-34-1804/72
/dev/loop26 357M 357M 0 100% /snap/stellarium-daily/1013
/dev/loop27 102M 102M 0 100% /snap/p7zip-desktop/220
/dev/loop28 400M 400M 0 100% /snap/obs-studio/1284
/dev/loop29 168M 168M 0 100% /snap/spotify/56
/dev/loop30 147M 147M 0 100% /snap/submix/2
/dev/sda1 197M 21M 177M 11% /boot/efi
tmpfs 787M 68K 786M 1% /run/user/1000
Alguém sabe o que significa isso?
e porque das mensagens de apenas 900 MB?