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Full Discussion: selective grep
Top Forums UNIX for Dummies Questions & Answers selective grep Post 302592378 by verse123 on Tuesday 24th of January 2012 08:27:28 AM
Old 01-24-2012
Sorry, the command is:

Code:
while read A B; do grep $A f1; done < f2 > f3

---------- Post updated 01-24-12 at 08:27 AM ---------- Previous update was 01-23-12 at 04:32 PM ----------

The input I have is this:


f1 looks like this

Quote:
12 aasa 1d "DOG11111"
13 aass 2d "DOG00912" contained in "DOG11111"
14 sdsss 3s "DOG00231" contained in "DOG00912"
34 dd 4d "DOG02340
f2 looks like this:

Quote:
DOG11111
DOG00231
DOG00912
Now, f3 should look like this:

Quote:
12 aasa 1d "DOG11111"
14 sdsss 3s "DOG00231" contained in "DOG11111"
13 aass 2d "DOG00912" contained in "DOG23244"
BUT, f3 is looking like this:

Quote:
12 aasa 1d "DOG11111"
14 sdsss 3s "DOG00231" contained in "DOG11111"
12 aasa 1d "DOG11111"
13 aass 2d "DOG00912" contained in "DOG23244"
Notice how the line '12 aasa 1d "DOG11111"' appears twice....this is the issue I am having. Because there are two DOG strings in the same line in some occasions, I do not want to grep for the DOG string that appears after the word "contained", meaning that if the code matches up a string between f1 and f2 it should be printed in f3 BUT if a line has a DOG string and the phrase "contained" only the first DOG of that line should be printed.


I basically just want grep to ignore the DOG string that appears after the word "contained"
 

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LEARN ABOUT LINUX

zegrep

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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