GLIMPSE 3.5: searching entire file systems (http://glimpse.cs.arizona.edu/) Glimpse is a very powerful indexing and query system that allows you to search through all your files very quickly. It can be used by individuals for their personal file systems as well as by organizations for large data collections. Glimpse is also the basis of GlimpseHTTP, which provides search for web sites, and it is the default search engine in Harvest (see below). Glimpseindex, which you run by saying "glimpseindex DIR" builds an index of all text files in the tree rooted at DIR. (e.g., glimpseindex ~ indexes all your files.) With it, glimpse can search through all files much the same way as agrep (or any other grep), except that you don't have to specify file names and the search is fast. For example, glimpse -1 unbelievable will find all occurrences (in all your files!) of "unbelievable" allowing one spelling error; glimpse -F mail arizona will find all occurrences of "arizona" in all files with "mail" somewhere in their name; glimpse 'Arizona desert;windsurfing' will find all lines that contain both "Arizona desert" and "windsurfing". Glimpse supports three types of indexes: a tiny one (2-3% of the size of all files), a small one (7-9%), and a medium one (20-30%). The larger the index the faster the search. Glimpse supports most of agrep's options (agrep is our powerful version of grep, and it is part of glimpse) including approximate matching (e.g., finding misspelled words), Boolean queries, and even some limited forms of regular expressions. The WWW home page for glimpse is in http://glimpse.cs.arizona.edu/ It includes links to the source, binaries for most UNIX systems, documentations, articles, and more. GlimpseHTTP home page is in http://glimpse.cs.arizona.edu/ghttp/ Harvest's WWW home page is http://harvest.cs.colorado.edu/ (Harvest is an integrated set of tools to gather, extract, organize, search, cache, and replicate relevant information across the Internet.) Mail glimpse-request@cs.arizona.edu to be added to the glimpse mailing list. Mail glimpse@cs.arizona.edu to report bugs, ask questions, discuss tricks for using glimpse, etc. (This is a moderated mailing list.) Udi Manber, Burra Gopal, and Sun Wu.