1. Connect to the server from a command line, using your Cloud's username and domain name
ssh
[email protected]
This will, on the first connection, produce a few lines saying something about not recognizing the host, do you want to add the host to your list of recognized hosts, (yes/no) - just type in yes here.
2. Then it will give you a line with the connection string you just used, asking for its password. Enter the password - you won't get a *** or anything else to indicate that you are entering anything, which can be rather disconcerting the first few times you do this.
This will produce a whole bunch of stuff telling you all about the server and the shell you have just connected to (the shell is the command line interface that lets you talk to the server). The last line will be the shell prompt, showing the path to where you are and your username with a $ where you enter stuff.
3. While not exactly necessary, I prefer at this point to cd (change directory) to the www/core/cache/ folder. This is just to avoid unpleasant mistakes. The shell commands are very literal and unforgiving; it's quite possible to completely delete everything in your Cloud's home directory if you use the wrong command in the wrong place.
cd www/core/cache
4. Again not necessary, but I double check to be double sure I am doing what I mean to do. Computers do exactly what you tell them to do, not necessarily what you mean for them to do! "Present Working Directory" will respond with the folder you are now in.
pwd
5. Now delete everything in the core/cache/ directory.
rm -Rf *
rm = remove
-R = Recursive; continue into all child folders since rm by itself will only remove files in the current folder, not other folders.
f = don't ask me at every file if I want to remove it, just do it.
* = everything.
If you are more stout of heart than I am, you can, immediately after logging in, simply use one line:
rm -Rf /home/www/core/cache/*
You won't get anything except a new command line prompt. the ls command will list what's in the directory you're in; at this point it shouldn't show anything.