Keep in mind that the forward slash "/" and not the back slash "\" is the character for specifying a directory in Linux. The backslash is a special character that will give special attributes to the next character that following it.
As far as using the 180G area, you can find a directory that has content that you might want to consider adding a symbolic link to space on the /home partition.
You can check what is using a lot of your space in your /usr partition with this command (or a variation there off):
$ cd /usr
$ du -sh $(ls)
Some of the directories will require elevated access to scan. You can add sudo
to check the size of those folders.
$ sudo du -sh $(ls)
If you have folders that have spaces you can check those folders by temporarily modifying the field separator with this variation of the command.
$ STOREIFS=$IFS && IFS=$(echo -en "\n\b") && sudo du -sh $(ls);IFS=$STOREIFS
Now once you see the folder that is taking up all your space you can move the files to a directory on your /home folder and make a symbolic link to it as such (for instance if /games
is the oversize folder).
$ sudo mkdir /home/games
$ sudo cp -pvau /usr/games /home/
$ sudo mv /usr/games /usr/games.old
$ sudo ln -s /home/games /usr/games
Now after you have verified that the new physical location of your /usr/games
folder works you can delete the /usr/games.old folder.
I used /usr/games
as an example. You could do that with any folder from the /usr directory.