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Full Discussion: Create shell script to extract unique information from one file to a new file.
Top Forums Shell Programming and Scripting Create shell script to extract unique information from one file to a new file. Post 302545589 by Chubler_XL on Tuesday 9th of August 2011 12:59:54 AM
Old 08-09-2011
With grep/sort/uniq:
Code:
grep -o "[^ ]*@[^ ]*" http.log.20110808.gz | sort | uniq

With awk:
Code:
awk ' /@/ { sub("^.*] ",""); sub(" .*", ""); if(!($0 in E)) print; E[$0]} ' http.log.20110808.gz

Note: if file is gzipped as extension seems to imply you man need to pipe output of gzip -d to these solutions.
This User Gave Thanks to Chubler_XL For This Post:
Mr_47
 

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LEARN ABOUT V7

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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