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Topic: Agrep


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  Python port of agrep string matching with errors (Version 1.2)   (Site not responding. Last check: 2007-10-20)
Agrep, written by Sun Wu and Udi Manber (described in "Fast Text Searching Allowing Errors", CACM, 35(10), 1992), is a suite of C functions which together perform various string matching operations under UNIX (i.e.
Given an input pattern and a file, agrep prints on standard output all records that match the pattern (so a single match suffices to have a record printed).
"agrep", now called, sagrep, deals with "short" pattern strings (setable by a header constant, currently 24), and "a_monkey", now called lagrep, which deals with longer strings.
www.bio.cam.ac.uk /~mw263/pyagrep.html   (557 words)

  
 Agrep - Wikipedia, the free encyclopedia
The title of this article is shown beginning with a capital letter due to technical restrictions.
It selects the best-suited algorithm for the current query from a variety of the known fastest (built-in) string searching algorithms, including Manber and Wu's bitap algorithm based on Levenshtein distances.
There is also another implementation of agrep as a part of the TRE regexp matching package.
en.wikipedia.org /wiki/Agrep   (159 words)

  
 Fink - Package Database - Package agrep
The three 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 ' 'pizza' mbox" outputs all mail messages that contain the keyword "pizza".
For example, "agrep -d '^From ' 'burger,pizza' mbox" outputs all mail messages containing at least one of the two keywords (, stands for OR).
fink.sourceforge.net /pdb/package.php/agrep   (180 words)

  
 CLR Catalog - More info on AGREP   (Site not responding. Last check: 2007-10-20)
AGREP This is version 2.04 of agrep - a new tool for fast text searching allowing errors.
agrep is similar to egrep (or grep or fgrep), but it is much more general (and usually faster).
(y/n) 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 ' 'pizza' mbox" outputs all mail messages that contain the keyword "pizza".
crl.nmsu.edu /cgi-bin/Tools/CLR/clrinfo?AGREP   (216 words)

  
 man page(1) manual page   (Site not responding. Last check: 2007-10-20)
When agrep is applied to more than one input file, the name of the file is displayed preceding each line which matches the pattern.
The syntax of regular expressions in agrep is in general the same as that for egrep.
agrep -d ‘$$’ -1 ‘ ’ foo finds all paragraphs that contain word1 followed by word2 with one error in place of the blank.
www.go.dlr.de:8081 /htbin/man?agrep   (1770 words)

  
 AGREP   (Site not responding. Last check: 2007-10-20)
AGREP (Approximate GREP) ist eine besondere Version aus der Familie der Grep-Programme, die im Gegensatz zu allen Varianten eine unscharfe (fuzzy) Textstringsuche ermöglicht.
AGREP wurde in den Jahren 1988-1991 von und an der Universität von Arizona entwickelt und bildet den Kern der Suchmaschine (Indexer) GLIMPSE bzw.
AGREP gehört nicht zur eigentlichen Gruppe der GNU-Utilities.
www.toonorama.com /encyclopedia/A/AGREP   (138 words)

  
 SGI Freeware: agrep 2.04   (Site not responding. Last check: 2007-10-20)
The three most significant features of agrep that are not supported by the grep family are
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.
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 ' 'pizza' mbox" outputs all mail messages that contain the keyword "pizza".
freeware.sgi.com /Installable/agrep-2.04.html   (224 words)

  
 Performance analysis
For Agrep and XDataSlice, we found that speculative execution was able to issue hints for nearly as many of the read calls as the manually modified applications.
The number of read calls is sometimes larger than the number of read blocks because, for example, Agrep issues at least one extra read call per file to detect the end of the file.
Agrep is the most likely of our applications to be affected by the fact that hint discovery is only performed during I/O stalls.
www.usenix.org /events/osdi99/full_papers/chang/chang_html/node14.html   (1006 words)

  
 A tool to search compressed textual files   (Site not responding. Last check: 2007-10-20)
Agrep is used by our software to perform the complicated searches over the dictionary of tokens; so that if you wish to substitute it, you should find or implement an equivalent (both in functionality and interface) program.
The cgrepand agrep options are numerous, so the we refer the user to the manpage of cgrep and agrep.
agrep is freely usable only for non-commercial purposes, therefore if you plan on using this library for commercial purposes, you should either get a license of agrep, or substitute agrep with an
roquefort.di.unipi.it /~ferrax/CompressedSearch   (1478 words)

  
 How I used DNS, a WebServer, and AGREP to create an Organization Website Search Engine
So, after promising to write a white paper about AGREP for quite some time, I finally had a topic that would show the simplicity of the solution and still show the extensibility and power it can provide.
Agrep was written by Sun Wu, Udi Manber and Burra Gopal.
This is more for a single organizational webring such as the Knights but not all of our members are hosted on the same domain so it’s just a design goal, not a requirement.
www.peregrinehw.com /downloads/agrep/webring-howto.html   (1060 words)

  
 Glimpse manual page(1)
Glimpse supports most of agrep's options (agrep is our powerful version of grep) including approximate matching (e.g., finding misspelled words), Boolean queries, and even some limited forms of regular expressions.
Agrep is distributed as a self-contained package within glimpse, and can be used separately.
This option is ignored when used not with -N. -r This option is an agrep option and it will be ignored in glimpse, unless glimpse is used with a file name at the end which makes it run as agrep.
www.ccsf.edu /Pub/Mj/glimpsehelp.html   (5162 words)

  
 Grep - Wikipedia, the free encyclopedia
There are various command line switches available when using grep that modify the default behaviour.
There are many derivatives of grep, for example agrep which stands for approximate grep to facilitate fuzzy string searching, fgrep for fixed pattern searches, and egrep for searches involving more sophisticated regular expression syntax.
Tcgrep is a rewrite of grep and uses Perl regular expression syntax.
en.wikipedia.org /wiki/Grep   (379 words)

  
 Simple Search Tools Can Save Time
WAIS and agrep queries are particularly useful if your search can be expressed as one or a few words or if you want to examine every record (or "object") in a database (the information is in there somewhere, but where?).
Although WAIS and agrep both support multi-database queries, it is important to understand that the way data is organized varies considerably across databases.
While WAIS and agrep are simple tools, they offer the most efficient methods for screening entire databases for words or phrases.
www.nal.usda.gov /pgdic/Probe/v4n3_4/simple.html   (1091 words)

  
 Grep - Wikipedia
Es existieren zahlreichen Varianten egrep, fgrep und agrep, das eine unscharfe (fuzzy) Textstringsuche ermöglicht.
Agrep wurde in den Jahren 1988-1991 von Udi Manber und Sun Wu an der Universität von Arizona entwickelt und bildet den Kern der Suchmaschine (Indexer) GLIMPSE bzw.
Grep wird in erster Linie dann eingesetzt, wenn viele Dateien durchsucht werden müssen, zum Beispiel die Quelldateien eines Computerprogramms oder viele Logdateien.
de.wikipedia.org /wiki/Grep   (338 words)

  
 REC: Approximation of EU Environmental Law: Country Reports: Hungary: part 2
The principle of access to environmental information is embodied in the AGREP and the Act regulates also the tasks of the State concerning the implementation of the principle.
According to the AGREP, a new governmental decree has already been drafted which determines the conditions of the Hungarian eco-label award, which will be harmonised with EU requirements.
The basic rules and principles concerning waste are embodied in the AGREP, which calls for the drafting of a new act on waste management, to comprehensively regulate all related questions including a new waste code system and the landfilling of waste.
www.rec.org /REC/Publications/EUlaw/FeeBased/Hungary2.html   (4634 words)

  
 The TIP Application Suite
Agrep, a variant of grep, was written by Wu and Manber at the University of Arizona.
Agrep simply loops through the argument list and informs the file system of the files it will read.
In our benchmark, Agrep searches 1349 kernel source files occupying 2922 disk blocks for a simple string that does not occur in any of the files.
www.pdl.cmu.edu /TIP/applications.html   (1497 words)

  
 man page(1) manual page   (Site not responding. Last check: 2007-10-20)
Glimpse includes all of agrep and can be used instead of agrep by giving a file name(s) at the end of the command.
This option is an agrep option and it will be ignored in glimpse, unless glimpse is used with a file name at the end which makes it run as agrep.
(This option is an agrep option and it will be ignored in glimpse, unless glimpse is used with a file name at the end which makes it run as agrep.) Output all records/lines that do not contain a match.
www.go.dlr.de:8081 /htbin/man?glimpse   (5611 words)

  
 agrep(1) manual page
Running agrep -2 Massechusets foo outputs all lines in foo con­ taining any string with at most 2 errors from Massechusets.
agrep supports a large variety of patterns, including sim­ ple strings, strings with classes of characters, sets of strings, wild cards, and regular expressions.
agrep -d `^From ` `breakdown;internet' mbox outputs all mail messages (the pattern `^From ` separates mail messages in a mail file) that con­ tain keywords `breakdown' and `internet'.
www.lib.uchicago.edu /keith/agrep.html   (1783 words)

  
 Searching   (Site not responding. Last check: 2007-10-20)
Even though the first phase can be by hashing or B-Trees, they prefered to use agrep, because of it's flexibility.
Agrep is similar in use to other grep's, but it is much more general.
So, given a pattern they first use agrep to find all the words in the index that match it, and then, using agrep again, they search the corresponding blocks to find the particular matches.
www.cs.technion.ac.il /~zgil/seminar96/search.html   (158 words)

  
 Domains with Typographical Errors - A Google Search Strategy
That is, the agrep results might have several variants for the target domain name, but the Google result would have only the relevant match.
Google also did better than agrep in that it more readily found targets resulting from transposition (exchange of two adjacent letters, e.g.
This due to agrep regarding a transposition as two changes in the string (as two letters are different), which makes such changes rank low, and exceeded the setting used in the agrep-based results.
www.sethf.com /domains/typos-google   (620 words)

  
 Re: agrep (was: Re: how to verify a vulnerability is closed)
Re: agrep (was: Re: how to verify a vulnerability is closed)
agrep is not part of RHEL, nor is it GPL compatible (though > I'd maintain it is Free enough..
agrep (was: Re: how to verify a vulnerability is closed)
www.redhat.com /archives/taroon-list/2005-January/msg00376.html   (310 words)

  
 CLR Catalog - More info on AFGREP   (Site not responding. Last check: 2007-10-20)
The limitations on Line length : 8K Number of strings: 30000 The mgrep algorithm in agrep runs significantly faster than other implementations of fgrep I've seen, and I've optimized afgrep a little more to improve it's performance compared to agrep.
On a Sparc machine, searching a 76000 line file for the presence of 2000 words, on the average, agrep ran in about 55 seconds and afgrep ran in about 40 seconds.
The afgrep code was modelled after the agrep code, so it falls under the same copyright.
crl.nmsu.edu /cgi-bin/Tools/CLR/clrinfo?AFGREP   (120 words)

  
 Fuzzy searching at NAL   (Site not responding. Last check: 2007-10-20)
One simple, but common, use for agrep is to account for differences in the British and American spellings of various words such a center/centre and color/colour.
The agrep form also provides a suite of plant and other databases to search.
In addition, because agrep searching involves paging through large text files, you can save time by selecting only the databases of interest.
weedsworld.arabidopsis.org.uk /Vol2/bigwood.html   (469 words)

  
 [No title]   (Site not responding. Last check: 2007-10-20)
Running.B agrep -2 Massechusets foo outputs all lines in foo containing any string with at most 2 errors from Massechusets.
.LP When.B agrep is applied to more than one input file, the name of the file is displayed preceding each line which matches the pattern.
For example, \fB agrep \-p DCS foo will match "Department of Computer Science.".TP.B \-s Work silently, that is, display nothing except error messages.
reality.sgi.com /freeware/relnotes/relnotes/source/glimpse-3.0/agrep/agrep.1   (1951 words)

  
 hakank.blogg: Fortsatt stavning av "Henning Mankell". Samt lite om agrep
Om man nu inte vill skriva slika uttryck kan man använda agrep, approximate grep, som även tillåter felstavningar.
Agrep använder edit distance för att avgöra antalet felstavningar, dvs räknar ut avstånden mellan orden.
Unlike other agrep implementations (like the one by Sun Wu and Udi Manber from University of Arizona available here) TRE agrep allows full regexps of any length, any number of errors, and non-uniform costs for insertion, deletion and substitution.
www.hakank.org /webblogg/archives/000651.html   (877 words)

  
 AGREP, an approximate GREP
AGREP is a powerful tool for fast searching a file or many files for a string or regular expression, with approximate matching capabilities and user-definable records.
AGREP belongs to the University of Arizona, which licenses it (see copyright).
AGREP ports to OS/2 and DOS and to Windows 95 and NT The first port of AGREP to OS/2 was done by Robert Mahoney (2Rud Software).
www.tgries.de /agrep   (3306 words)

  
 [No title]   (Site not responding. Last check: 2007-10-20)
Title: agrep Version: 2.01 Submitted: Feb 23 1992 Author: sw@cs.arizona.edu (Sun Wu) Submittor: sw@cs.arizona.edu (Sun Wu) Description: very fast grep with approximate pattern matching [ I've been using this since I got it, and it's GREAT.
Faster than gnugrep and bmgrep almost always, and faster than egrep if you don't need the extended regex syntax.
agrep is similar to egrep/grep/fgrep, but it is much more general and usually faster.
www.isc.org /sources/utils/text/searching/agrep-2.01.txt   (358 words)

  
 agrep (was: Re: how to verify a vulnerability is closed)
When the agrep curveball came through this list, and the juju stuff it outputs, I want to know more.
agrep is not part of RHEL, nor is it GPL compatible (though I'd maintain it is Free enough..
The best description of agrep is the manpage: http://www.lib.uchicago.edu/keith/agrep.html
www.redhat.com /archives/taroon-list/2005-January/msg00342.html   (254 words)

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