Whenever you have an urge to hit the backslash , hit the forward slash key instead. To understand it, let's look at a small directory listing as made with the ls -l command. The permissions are indicated by a series of rwx's on the left side of the listing. The first position indicates the type of file. The remaining nine characters indicate the permissions given to the owner, group, and others.
X means execute permission- except for directories where it means search permission.
Usually these are not in your web directory. Check the help file with your FTP program for the exact instructions. The most popular UNIX editor. Can be found on every system. Recommended for more advanced users.