How to find amount of free disk space in Linux
The “df” command can be used to get the details of disk usage and free space on all mounted partitions in Linux system. “df” stands for “disk free”. The following shows how to get the details in human readable format.
[neo@techpulp ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/sda3 16G 12G 4G 67% / /dev/sda1 80M 16M 64M 20% /boot /dev/sda5 8G 1.2G 6.8G 15% /home /dev/sda6 20G 10G 10G 50% /disk1 [neo@techpulp ~]#

