Wicked Cool Shell Scripts

#41 Figuring Out Available Disk Space

Related to disk quota management is the simpler question of how much disk space is available on the system. The df command reports disk usage on a per-disk basis, but the output can be a bit baffling:

$ df
Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/hdb2             25695892   1871048  22519564   8% /
/dev/hdb1               101089      6218     89652   7% /boot
none                    127744         0    127744   0% /dev/shm

What would be much more useful is a version of df that summarizes the available capacity values in column four and then presents the summary in a way that is easily understood. It's a task easily accomplished in a script.

The Code

 #!/bin/sh # diskspace - Summarizes available disk space and presents it in a logical # and readable fashion. ...