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Full Discussion: In memory grep of a large file.
Top Forums Shell Programming and Scripting In memory grep of a large file. Post 302960496 by drl on Monday 16th of November 2015 10:55:31 AM
Old 11-16-2015
Hi.

I'm not going to post everything because I'm still thinking about it, but this version of the grep pattern seems to produce the expected output:
Code:
grep -owP "(\w+\s){0,2}(obama|primaries|water)(\s\w+){0,2}" <your_input_file>

producing:
Code:
in 2004 obama received national
democratic party primaries to receive
his inauguration obama was named

Best wishes ... cheers, drl
This User Gave Thanks to drl For This Post:
shoaibjameel123
 

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LEARN ABOUT DEBIAN

british-english-huge

british-english-huge(5) 					   Users' Manual					   british-english-huge(5)

NAME

       british-english-huge - a list of English words

DESCRIPTION

       /usr/share/dict/british-english-huge is an ASCII file which contains an alphabetic list of words, one per line.

FILES

       There  may  be  any  number  of	word lists in /usr/share/dict/.  /etc/dictionaries-common/words is a symbolic link to the currently-chosen
       /usr/share/dict/<language> file.  /usr/share/dict/words is a symbolic link to /etc/dictionaries-common/words, and  is  the  name  by  which
       other  software should refer to the system word list.  See select-default-wordlist(8) for more information, and/or to change the currently-
       chosen word list.

       The directory /usr/share/dict can contain word lists for many languages, with name of the language in English, e.g., /usr/share/dict/french
       and  /usr/share/dict/danish  contain respectively lists of French and Danish words if they exist.  Such lists should be coded using the ISO
       8859-1 character set encoding.

SEE ALSO

       ispell(1), select-default-wordlist(8), and the Filesystem Hierarchy Standard.

HISTORY

       The words lists are not specific, and may be generated from any number of sources.

       The system word list used to be /usr/dict/words.  For compatibility, software should check that location if /usr/share/dict/words does  not
       exist.

AUTHOR

       Word  lists  are  collected and maintained by various authors.  The Debian English word lists are built from the SCOWL (Spell- Checker Ori-
       ented Word Lists) package, whose upstream editor is Kevin Atkinson <kevina@users.sourceforge.net>.

Debian								   16 June 2003 					   british-english-huge(5)
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