Linux Disk

sudo du --max-depth 2 -ah / --exclude=/proc --exclude=/sys --exclude=/dev --exclude=/mnt | sort -h

sudo du --max-depth 1 -ah /var/log | sort -h

sudo apt install -y iotop

sudo iotop -o

sudo apt install -y sysstat

iostat -x 1

dd if=/dev/zero of=/mnt/ssd1/testfile bs=1G count=1 oflag=direct

dd if=/mnt/ssd1/testfile of=/dev/null bs=1G iflag=direct