I came across a few commands I found very useful: du, df, and cat
The first displays how much memory a directory uses. This is helpful, for example, if you want to know the size the root file system you just built with LTIB.
Example: So you want to find out how much space is use in /etc
du -h /etc
You may get a very long listing--all files and sub-directories. But the last line gives you the grand total. The -h means "human readable".
To get a quicker look (and avoid a large print out), you can look at just the last 10 lines of the listing (the "tail") this way:
du -h /etc | tail
Or to see just the last line:
du -h /etc | tail -n 1
You can find out more by typing:
This is a useful for looking at how much disk storage is available. This includes how much memory is available on the removable disk such as MMC.
Listing disk partitions
There are several ways to do this. The quickest I've found is to type:
Besides listing the partitions, it tells you which drives and files are mounted. Useful if you want to check if the MMC card is connected.
Again, the -h stands for "human readable"
You can find out more by typing