Show filesystem info linux
Show ext2/3/4 metadata: block size, mount count, last mount time
tune2fs -l /dev/sda1 | grep -E 'Block (count|size)|Mount count|Last mount'
more linux
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Disk usage with depth
du -h --max-depth=2 /var | sort -rh | head -20
Free disk space summary
df -hT --type=ext4 --type=xfs --type=btrfs
Interactive partition editor
fdisk /dev/sdb
Partition with parted (GPT)
parted /dev/sdb -- mklabel gpt mkpart primary ext4 1MiB 100%
Show LVM physical volumes
pvs && pvdisplay