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Top Forums Shell Programming and Scripting Greping summaries of academic citations Post 302729723 by ripat on Sunday 11th of November 2012 03:08:42 AM
Old 11-11-2012
This regex seems to also return the required output:

Code:
grep -o "([^)]\+ [0-9]\{4\})" file

But it will fail on the citations spread on multiple lines as in:
Quote:
symptoms of schizophrenia, and they are now
used more widely ( J. M. Davis, Chen, & Glick,
Compared to drugs like haloperidol, the second-generation
2003; Edlinger et al., 2005)
. Clozapine is generally considantipsychotics
Suggestion, first get rid of all CR before running the grep thing.

Edit:
Try this:
Code:
tr -d '\n' < file | grep -o "([^)(]\+ [0-9]\{4\})"


Last edited by ripat; 11-11-2012 at 05:49 AM.. Reason: Ammended snippet
This User Gave Thanks to ripat For This Post:
 

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ZGREP(1)						    BSD General Commands Manual 						  ZGREP(1)

NAME
zgrep, zegrep, zfgrep -- print lines matching a pattern in gzip-compressed files SYNOPSIS
zgrep [grep-flags] [--] pattern [files ...] zegrep [grep-flags] [--] pattern [file ...] zfgrep [grep-flags] [--] pattern [file ...] DESCRIPTION
zgrep runs grep(1) on files or stdin, if no files argument is given, after decompressing them with zcat(1). The grep-flags and pattern arguments are passed on to grep(1). If an -e flag is found in the grep-flags, zgrep will not look for a pattern argument. zegrep calls egrep(1), while zfgrep calls fgrep(1). EXIT STATUS
In case of missing arguments or missing pattern, 1 will be returned, otherwise 0. SEE ALSO
egrep(1), fgrep(1), grep(1), gzip(1), zcat(1) AUTHORS
Thomas Klausner <wiz@NetBSD.org> BSD
December 28, 2003 BSD
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