In Linux there are lot of ways to disk size and/or space, but the ‘Disk Filesystem’ (df) command is old reliable and has been around a long time. The ‘df’ command provides a summary of disk space and free space, which I find myself coming back to time after time.
Basic Command Format
DF -<<Option>> <<File>>
Example ‘Disk Filesystem’, Command
df -h
- -h = Human readable in Mega Bytes
For more details in Linux
df –help
Example Command Output
root@BlogSrvr1 /]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/vg_BlogSrvr1-lv_root
36G 34G 16M 100% /
tmpfs 3.9G 0 3.9G 0% /dev/shm
/dev/sda1 477M 33M 419M 8% /boot
/dev/mapper/vg_BlogSrvr1-LogVol03
11G 27M 9.9G 1% /data
/dev/mapper/vg_BloSrvr1-lv_home
4.8G 33M 4.6G 1% /home
/dev/mapper/vg_BlogSrvr1-LogVol04
25G 13G 11G 55% /opt/IBM
/dev/mapper/vg_BlogSrvr1-LogVol05
11G 6.0G 3.7G 62% /scratch
/dev/mapper/vg_BlogSrvr1-LogVol06
11G 27M 9.9G 1% /tmp/dev/shm