Using ttf fonts in Linux
While working in Linux and wanting to work with the GIMP, I mainly lacked my fonts, the ones I had in Windows, so needless to say I had to fix this. So here is how I do it

First you will have to make a folder to store your ttf fonts in, normally I use /usr/share/fonts/ttf/ as folder. You will have to do this as root, so

What we did here, was with "su -" change the user to root, the "-" just gives you the path of your root account (I prefer it that way). You will then have to enter the root password. "mkdir" makes you a nice directory, you don't have to choose /usr/share/fonts/ttf, so in case you've used a different directory, you will have to change the directory path to the one you chose.
"chmod 755" changes the permissions on that folder, 755 gives root all access, the first 5 is for users and the second 5 is for the public. 5 gives read and execute access, there's no need to allow the other users or public to write to the folder.

Now I assume you have your fonts downloaded already, if not these are a few good sources.
http://www.wantedfonts.com/
http://www.dafont.com/en/
http://www.highfonts.com/freefonts.asp

If your newly downloaded fonts are compressed still, then we have to decompress. But to make it easier later on we'll first move the files to the right place. You downloaded them, and they are probably on your Desktop or in your home directory, I'll type it in for both cases.

What you did was move all files (the * wildcard) with the extension zip to our ttf folder, if your files have other extensions you can do it the same way.

Now go to your ttf folder

Most fonts come in zip format, just stick to command line and do .. if it's a tarball (.tar.gz , .tgz) , bzip2 (.bz2) follow along.

It's simple isn't it? The options with the untarring, "xvzf" are also simple. x stands for eXtract, v for Verbose (outputs the actions and can be left out though I prefer to see it), z for the unzipping (if there's no gz in the extension leave out the z or you'll get an error) and f for file (I think LOL I always add this, don't know why though)

Now you should have or lil folders with your fonts in there, or your fonts unzipped. In case you have the little folders, you'll need to move your files out of those folders.

The ".." moves the font to one folder up (in our case to the ttf folder)

Now that your fonts are in the correc folder, we can actually work it

This is what you do next.. please in this order!!

Now you should see a file there called fonts.scale. But we're still not done. We still have to tell Xwindows were are fonts are. Here's where the distro's will differ.

If you have chkfontpath (you can easily check this by trying the command - Red Hat and Fedora have these, that I did test)

If you don't have chkfontpath, you will have to edit a file in /etc/X11/xfs/config (or /etc/X11/fs/config). You need root access still for this one. I will use vi in the example, because that's what I find easiest, but you can use gedit (just enter gedit instead of vi in the console)

Find the line which starts with "catalog=", and add your directory at the end of the list, separated by a comma.

This is my config file (note the last line on the catalog= )

You're done You can test it, by running

it should display your ttf fonts (or just go to Prefs -> Fonts )

In older versions of XWindows you may need to restart the font server for it to register the new fonts. The easiest way to do this is to reboot.

Adding more fonts.
If you want to add more fonts (don't we all love fonts LOL), then just rerun this after you've put the UNZIPPED TTF's in /etc/share/fonts/ttf