Viewing Disk usage

df        df' reports the amount of disk space used and available on file systems.
              options     df -hT /home
              -h   print sizes in human readable format (e.g., 1K 234M 2G)
              -T   print file system type

du      Summarize disk usage of each FILE, recursively for directories
            i.e.estimate file space usage.
            options          du -sh /home
            s    display only a total for each argument