Hi Everyone,
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.
du
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:
man du
df
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.
df -h
Listing disk partitions
There are several ways to do this. The quickest I've found is to type:
cat /proc/partitions
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
man df
