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Full Discussion: Finding the same pattern in three consecutive lines in several files in a directory
Top Forums UNIX for Dummies Questions & Answers Finding the same pattern in three consecutive lines in several files in a directory Post 302880191 by shoaibjameel123 on Wednesday 18th of December 2013 02:08:35 AM
Old 12-18-2013
Finding the same pattern in three consecutive lines in several files in a directory
I know how to search for a pattern/regular expression in many files that I have in a directory. For example, by doing this:
Code:
grep -Ril "News/U.S." .

I can find which files contain the pattern "News/U.S." in a directory.

I am unable to accomplish about how to extend this code so that it can search for 3 consecutive lines in the files which contain the above pattern. The code should only output file names which contain three consecutive times the above pattern, and disregard less than 2 or 4 or greater.

I mean:
Code:
News/U.S.
News/U.S.
News/U.S.

As you can see News/U.S. appears 3 times consecutively in newlines. I want to output those file names which contain the above pattern. I am using Linux with BASH.
 

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LEARN ABOUT MINIX

zgrep

ZGREP(1)                                                      General Commands Manual                                                     ZGREP(1)

NAME

       zgrep - search possibly compressed files for a regular expression

SYNOPSIS

       zgrep [ grep_options ] [ -e ] pattern filename...

DESCRIPTION

       Zgrep  invokes  grep  on  compressed  or  gzipped  files.   These  grep  options  will  cause  zgrep  to  terminate  with  an  error  code:
       (-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*).  All other options specified are passed directly to grep.  If no file is specified,  then  the
       standard input is decompressed if necessary and fed to grep.  Otherwise the given files are uncompressed if necessary and fed to grep.

       If the GREP environment variable is set, zgrep uses it as the grep program to be invoked.

EXIT CODE

       2 - An option that is not supported was specified.

AUTHOR

       Charles Levert (charles@comm.polymtl.ca)

SEE ALSO

       grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1)

                                                                                                                                          ZGREP(1)
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