Despite being not really clear your post I am assuming you are looking about how to find out what data is filling up your disk space.
To find out, first of all you will need to check your file system capacity:
The above command will show you the FS capacity.
I don't know if you have set up separate partition or all in one partition in your system. I am going with the assumption that you have all in one partition which
To check where is the offending data which is filling the system you can use
du command as follow (use
sudo if you are not root):
du -sh /*
This will show you all subdirectories of
/ filesystem with the data size.
Let's say you found out that your
/home is the biggest size, so you can proceed further, again using
du -sh /home/*
And you will see which is the biggest data in your home directory and so on.
If you want to remove the data, you can do it either using GUI based file explorer (i.e. thunar, nautilus, etc.) or in command line as follow:
rm -rf /home/foo
In the above command you are removing whatever foo is, can be either file or directory (mind
-r option, removes recursively).
Pls be aware that removing files with
-rf option are not sending your data in your trash but they will be erased permanently. So keep in mind and think twice before removing anything, especially in the system side (out of your home dir).