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Full Discussion: GREP function in ksh which ignores LINE Breaks
Top Forums UNIX for Dummies Questions & Answers GREP function in ksh which ignores LINE Breaks Post 302917990 by Corona688 on Friday 19th of September 2014 04:23:56 PM
Old 09-19-2014
grep does not work that way. grep matches lines containing patterns, it does no logic like 'if this line and this line do this thing or this other thing' etc. It's not a programming language.

awk is a programming language, and can.

Code:
$ awk -v P1="pattern1" -v P2="pattern2" '
# set A if P1 found, set B if P2 found
$0~P1{A=1} $0~P2{B=1} 
# If filename changes, and A set, and B set, print filename.  Reset A and B.
(L != ARGIND) { L++; if(A && B) print ARGV[L];  A=B=0 }
# Check A and B for the last filename and print.
END { if(A&&B) print ARGV[L] }' filename1 filename2 filename3 filename4

 

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LEARN ABOUT OPENSOLARIS

diff3

diff3(1)							   User Commands							  diff3(1)

NAME

       diff3 - 3-way differential file comparison

SYNOPSIS

       diff3 [-exEX3] filename1 filename2 filename3

DESCRIPTION

       diff3 compares three versions of a file. It publishes disagreeing ranges of text flagged with the following codes:

       ====	all three files differ

       ====1	filename1is different

       ====2	filename2is different

       ====3	filename3is different

       The type of change suffered in converting a given range of a given file to some other is indicated in one of the following ways:

       f : n1 a 	Text is to be appended after line number n1 in file f, where f = 1, 2, or 3.

       f : n1 , n2 c	Text is to be changed in the range line n1 to line n2. If n1 = n2, the range can be abbreviated to n1.

       The  original contents of the range follows immediately after a c indication. When the contents of two files are identical, the contents of
       the lower-numbered file is suppressed.

       The following command applies the resulting script to filename1.

	 (cat script; echo a'1,$pa') | ed - filename1

OPTIONS

       The following options are supported:

       -e     Produce a script for the ed(1) editor that incorporates into filename1 all changes between filename2 and	filename3  (that  is,  the
	      changes that normally would be flagged ==== and ====3).

	      Text lines that consist of a single dot (. defeat the -e option.

       -E     Produce a script that incorporates all changes between filename2 and filename3, but treat overlapping changes (that is, changes that
	      would be flagged with ==== in the normal listing) differently. The overlapping lines from  both  files  are  inserted  by  the  edit
	      script, bracketed by <<<<<< and >>>>>> lines.

       -x     Produce a script to incorporate only changes flagged ====.

       -X     Produce a script that incorporates only changes flagged ====, but treat these changes in the manner of the -E option.

       -3     Produce a script to incorporate only changes flagged ====3.

USAGE

       See largefile(5) for the description of the behavior of diff3 when encountering files greater than or equal to 2 Gbyte ( 2^31 bytes).

FILES

       /tmp/d3*

       /usr/lib/diff3prog

EXIT STATUS

       The following exit values are returned:

       0     Successful completion.

       1     An error occurred. A difference was found or there was a fatal error.

       >1    A fatal error occurred.

       Return values do not work the same as diff(1) or other vendor's versions of diff3.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWesc			   |
       +-----------------------------+-----------------------------+
       |CSI			     |Enabled			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       diff(1), attributes(5), largefile(5)

NOTES

       Files longer than 64 Kbytes do not work.

SunOS 5.11							    7 Nov 2005								  diff3(1)
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