查看硬盘的使用情况df,-h单元为根据大小适当显示,-m单位为M;
admin@ubuntu-test:~$ df -h
文件系统 容量 已用 可用 已用% 挂载点
udev 7.8G 0 7.8G 0% /dev
tmpfs 1.6G 3.6M 1.6G 1% /run
/dev/sda6 1.1T 603G 497G 55% /
tmpfs 7.8G 0 7.8G 0% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 7.8G 0 7.8G 0% /sys/fs/cgroup
/dev/loop0 52M 52M 0 100% /snap/snap-store/518
/dev/loop2 56M 56M 0 100% /snap/core18/1988
/dev/loop3 32M 32M 0 100% /snap/snapd/11036
/dev/loop4 219M 219M 0 100% /snap/gnome-3-34-1804/66
/dev/loop1 65M 65M 0 100% /snap/gtk-common-themes/1514
/dev/sda5 943M 261M 618M 30% /boot
tmpfs 1.6G 20K 1.6G 1% /run/user/125
tmpfs 1.6G 32K 1.6G 1% /run/user/1001
admin@ubuntu-test:~$ df -m
文件系统 1M-块 已用 可用 已用% 挂载点
udev 7940 0 7940 0% /dev
tmpfs 1596 4 1592 1% /run
/dev/sda6 1125372 616511 508862 55% /
tmpfs 7978 0 7978 0% /dev/shm
tmpfs 5 0 5 0% /run/lock
tmpfs 7978 0 7978 0% /sys/fs/cgroup
/dev/loop0 52 52 0 100% /snap/snap-store/518
/dev/loop2 56 56 0 100% /snap/core18/1988
/dev/loop3 32 32 0 100% /snap/snapd/11036
/dev/loop4 219 219 0 100% /snap/gnome-3-34-1804/66
/dev/loop1 65 65 0 100% /snap/gtk-common-themes/1514
/dev/sda5 943 261 618 30% /boot
tmpfs 1596 1 1596 1% /run/user/125
tmpfs 1596 1 1596 1% /run/user/1001
结合awk命令统计磁盘的总量:
admin@ubuntu-test:~$ df -m |awk '{sum+=$2} END {print sum/1024"G"}'
1128.35G
admin@ubuntu-test:~$ df -m |awk '{sum+=$2} END {print sum/1024/1024"T"}'
1.1019T