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- This directory contains version 1.0 of agrep - a tool for
- approximate text searches.
- The tar file also contains a postscript file of a technical report describing
- the algorithm and its implementation (agrep.ps), manual pages
- (agrep.1), and the usual copyright statement (COPYRIGHT).
- agrep is a tool for text searching with errors.
- Its use is similar to egrep (or grep or fgrep), but it is much more
- general. It is also usually faster than egrep (but slower than
- GNU egrep or any Boyer-Moore type matching).
- It is based on an entirely different algorithm.
- The two most significant features of agrep that are not supported by
- the grep family are
- 1) the ability to search for approximate patterns;
- for example, "agrep -2 homogenos foo" will find homogeneous as well
- as any other word that can be obtained from homogenos with at most
- 2 substitutions, insertions, or deletions.
- 2) agrep is record oriented rather than just line oriented; a record
- is by default a line, but it can be user defined;
- for example, "agrep -d '^From ' 'breakdown; arpanet' mbox"
- outputs all mail messages (the pattern '^From ' separates mail messages
- in a mail file) that contain breakdown message about arpanet.
-
- This is the first version of agrep. Expect some bugs, especially with
- complicated patterns and a combination of options.
- Please mail bug reports (or any other comments)
- to sw@cs.arizona.edu or to udi@cs.arizona.edu.
-
- We would appreciate if users notify us (at the address above)
- of any extensions, improvements, or interesting uses of this software.
-
- June 11, 1991.
-
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-