For better or for worse, Adobe's Portable Document Format (PDF) is a wildly popular way of exchanging information. On Windows and Mac OS, most people create PDF files by first creating a PostScript file and then using Adobe Acrobat Distiller to generate a PDF. Linux, however, has no version of Distiller. There are a number of ways to create a PDF in Linux, but one of the most popular methods is to use a utility called ps2pdf.
If you're preparing a paper for a conference submission or if you just want to ensure that your .pdf looks exactly the same on someone else's computer as it does on yours, then you need to know how to embed the fonts used in your pdf in the file itself. In this article, I'll show you how to do this in Linux and how to verify that you've done it successfully. If you want information about doing this in Windows, check how to embed fonts in pdfs in Windows.