GNU/Linux Check Disk Space Checking Disk Space
Example
It's quite common to want to check the status of the various partitions/drives on your server/computer to see how full they are. The following command is the one you'll want to run:
df -h
This will produce output similar to the following:
[root@mail ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup-lv_root
19G 1.6G 16G 9% /
tmpfs 245M 0 245M 0% /dev/shm
/dev/sda1 485M 47M 413M 11% /boot
In this basic example, we can see that the / partition only has 9% used.
For a more complex example that also covers using df to see various mountpoints, see below:
[root@mail ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VG-root 1.9T 1.7T 89G 95% /
/dev/mapper/VG-var 431G 145G 264G 36% /var
devtmpfs 7.8G 204K 7.8G 1% /dev
tmpfs 7.8G 4.0K 7.8G 1% /dev/shm
/dev/md1 495M 126M 344M 27% /boot
ku.example.com:9421 2.5T 487G 2.0T 20% /mnt/test
tmpfs 500M 86M 415M 18% /var/ngx_pagespeed_cache
In this example, we have a / partition that's 95% full along with an additional /var partition that's only 36% full.
It's got an external network mount of 2T that's mounted on /mnt/test and a ramdisk/tmpfs mount of 500M mounted on /var/ngx_pagespeed_cache.
