I have downloaded some programs from PortableLinuxApps.com such as Xnoise, and Chromium, and have them saved on a USB with the intention of their being part of a Swiss-Army-USB holiday gift for my brother. However, they were binary files when I downloaded them and the site says that I need to make the programs executable before I can run them. How might I do this?
More importantly, can I do this in the next 24 hours? If not, is there a way around this restriction?