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Full Discussion: Finding 50k Keywords in 3k files
Top Forums Shell Programming and Scripting Finding 50k Keywords in 3k files Post 302520886 by rjains on Monday 9th of May 2011 01:10:20 PM
Old 05-09-2011
Finding 50k Keywords in 3k files
Hi,

I have a file with about 50k keywords. I have a requirement to scan about 3k files to identify which filename has which keyword i.e. an output like following:

File1,Keyword1
File1,Keyword2
File3,Keyword1
.....

I have written a shell script which takes each of the 3k files, searches for the existence of the Keyword one by one (using grep). Once it reaches the end it starts with the next file.

I would like to know if there is a more efficient way of carrying this operation out?

Thanks in advance for your help.
 

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LEARN ABOUT FREEBSD

whatis

APROPOS(1)						    BSD General Commands Manual 						APROPOS(1)

NAME

     apropos, whatis -- keyword search whatis documentation databases

SYNOPSIS

     apropos [-d] keyword ...
     whatis [-d] keyword ...

DESCRIPTION

     The apropos utility searches a set of databases looking for documentation matching each keyword and displays the results.	The whatis utility
     does the same search but only on complete words.

     -d  Print extra debugging information.

     The keyword is simply passed to grep(1) allowing for extended regular expression matches.

ENVIRONMENT

     The following environment variables affect the execution of apropos:

     MANLOCALES, MANPATH, PATH
	    Used to find the location of the whatis database files. See manpath(1) for additional information.

     PAGER  Program used to display files.  If unset, more -s is used.

DIAGNOSTICS

     The apropos utility exits 0 if a keyword matched and 1 if no keywords are matched or no whatis databases are found.

SEE ALSO

     grep(1), makewhatis(1), man(1), manpath(1), man.conf(5)

BSD
								 September 1, 2010							       BSD
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