How to check disk space on Unix servers

To check the disk space on a Unix server, you can use the df command. This command displays information about the file systems on the server, including the total size, used space, and available space.

To check the disk space on a Unix server, open a terminal window and run the df command.

For example:

df

This will display a list of file systems on the server, along with the total size, used space, available space, and usage percentage.

For example, the output might look something like this:

Filesystem     1K-blocks     Used Available Use% Mounted on
/dev/sda1       80537792 24573852  55964040  31% /
none                   4        0         4   0% /sys/fs/cgroup
udev            40320736        4  40320732   1% /dev
tmpfs            8069456     2968   8066488   1% /run
none                5120        0      5120   0% /run/lock
none            40320736        0  40320736   0% /run/shm
none            40320736       48  40320688   1% /run/user

In this example, the file system mounted on / (the root file system) has a total size of 80537792 1K blocks, with 24573852 blocks used and 55964040 blocks available. The usage percentage is 31%.

You can use the -h option to display the disk space in human readable format:

df -h