Linux operation command df

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1, introduction

df command is short for disk free
    

2. Main functions

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] file

    

4. 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

Tags: Linux shell

Posted on Wed, 06 Nov 2019 14:06:35 -0500 by mcguinkc