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1, introduction
df command is short for disk free
The function of df command in linux is to check the disk space occupation of the file system of the linux server; you can get the information about how much space the hard disk is occupied and how much space is left at present
3. Usage / command format df [options] file4. Analysis of common parameters parameter describe -a List of all file systems -h Easy to read display -i Show inode information -T -T -T < file system type > Display only disk information for the selected file system -X < file system type > Do not display disk information for the selected file system
5, case
5.1 display disk usage
# df -h Filesystem Size Used Avail Use% Mounted on udev 468M 0 468M 0% /dev tmpfs 98M 7.1M 91M 8% /run /dev/sda3 47G 1.5G 43G 4% / tmpfs 488M 0 488M 0% /dev/shm tmpfs 5.0M 0 5.0M 0% /run/lock tmpfs 488M 0 488M 0% /sys/fs/cgroup /dev/sda1 922M 56M 803M 7% /boot /dev/sdb 20G 53M 19G 1% /mnt/wl_learn_linux tmpfs 98M 0 98M 0% /run/user/1000
5.2 inode mode
# df -i Filesystem Inodes IUsed IFree IUse% Mounted on udev 119779 506 119273 1% /dev tmpfs 124788 685 124103 1% /run /dev/sda3 3096576 66585 3029991 3% / tmpfs 124788 1 124787 1% /dev/shm tmpfs 124788 3 124785 1% /run/lock tmpfs 124788 16 124772 1% /sys/fs/cgroup /dev/sda1 61056 302 60754 1% /boot /dev/sdb 1310720 49 1310671 1% /mnt/wl_learn_linux tmpfs 124788 4 124784 1% /run/user/1000
5.3 disk file system type
# df -T Filesystem Type 1K-blocks Used Available Use% Mounted on udev devtmpfs 479116 0 479116 0% /dev tmpfs tmpfs 99832 7220 92612 8% /run /dev/sda3 ext4 48589664 1499896 44598480 4% / tmpfs tmpfs 499152 0 499152 0% /dev/shm tmpfs tmpfs 5120 0 5120 0% /run/lock tmpfs tmpfs 499152 0 499152 0% /sys/fs/cgroup /dev/sda1 ext4 944120 57304 821640 7% /boot /dev/sdb ext4 20511356 53400 19392996 1% /mnt/wl_learn_linux tmpfs tmpfs 99832 0 99832 0% /run/user/1000