Hello, I'm not that familiar with using the Terminal, but every now and then I mess around with the command-line to make some adjustments to the computer. A few months ago, I began noticing typing some commands (like 'sudo') into the Terminal stopped working. Now, whenever I open Terminal, a heading of text appears: export: `Archiver/B1FreeArchiver.app/Contents/MacOS:/Library/Frameworks/Python.framework/Versions/3.4/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/opt/X11/bin:/usr/local/MacGPG2/bin': not a valid identifier I have no idea what this means. I downloaded B1 Free Archiver sometime a few months ago, that seems to be the problem. Anyway, the text is clutter, and I'm not sure how to get rid of it. Some commands don't seem to work anymore, and that's a real problem. Is there a method you can explain to me clearly that will reset the Terminal app to it's default state? I don't wish to do a clean install of the operating system.