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Top Forums UNIX for Beginners Questions & Answers Advise to print lines before and after patterh match and checking and removing duplicate files Post 303046122 by jim mcnamara on Friday 24th of April 2020 02:24:21 PM
Old 04-24-2020
IF you had mentioned your OS I could be sure of a better answer -
have you tried grep?
Code:
grep -A 10 -B 10  "CORRUPTION DETECTED" logfilename.log

is one way to it with many, but not all, OSes.

--- Post updated at 13:15 ---

If files are duplicated and assuming you mean what is inside the file is the same then try a cksum

Code:
oldsum=0
oldfile
ls logfile* | 
while read sum size name
do
   if [  "$sum" -eq $oldsum ] ; then
      echo "$oldname and $name are duplicates"
      # put a rm command here after you see this work correctly for you
      # assuming you delete the second file name
      continue
   fi
   oldname=$name
   oldsum=$sum
   
done

--- Post updated at 13:24 ---

try:
Code:
cd /path/to/logs


grep -l "CORRUPTION DETECTED" *.log  |
while read fname
do
   cksum $fname
done | sort -n -k1 > files.tmp
# files.tmp has a sorted list of files - by checksum

Get this working for you , then you can delete identical files.
This User Gave Thanks to jim mcnamara For This Post:
 

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RAKE(1) 						 Ruby Programmers Reference Guide						   RAKE(1)

NAME
rake -- Ruby Make SYNOPSIS
rake [--f Rakefile] [--version] [-CGNPgnqstv] [-D [PATTERN]] [-E CODE] [-I LIBDIR] [-R RAKELIBDIR] [-T [PATTERN]] [-e CODE] [-p CODE] [-r MODULE] [--rules] [variable=value] target ... DESCRIPTION
Rake is a simple ruby(1) build program with capabilities similar to the regular make(1) command. Rake has the following features: o Rakefiles (Rake's version of Makefiles) are completely defined in standard Ruby syntax. No XML files to edit. No quirky Makefile syntax to worry about (is that a tab or a space?). o Users can specify tasks with prerequisites. o Rake supports rule patterns to synthesize implicit tasks. o Flexible FileLists that act like arrays but know about manipulating file names and paths. o A library of prepackaged tasks to make building rakefiles easier. OPTIONS
--version Display the program version. -C --classic-namespace Put Task and FileTask in the top level namespace -D [PATTERN] --describe [PATTERN] Describe the tasks (matching optional PATTERN), then exit. -E CODE --execute-continue CODE Execute some Ruby code, then continue with normal task processing. -G --no-system --nosystem Use standard project Rakefile search paths, ignore system wide rakefiles. -I LIBDIR --libdir LIBDIR Include LIBDIR in the search path for required modules. -N --no-search --nosearch Do not search parent directories for the Rakefile. -P --prereqs Display the tasks and dependencies, then exit. -R RAKELIBDIR --rakelib RAKELIBDIR --rakelibdir RAKELIBDIR Auto-import any .rake files in RAKELIBDIR. (default is rakelib ) -T [PATTERN] --tasks [PATTERN] Display the tasks (matching optional PATTERN) with descriptions, then exit. -e CODE --execute CODE Execute some Ruby code and exit. -f FILE --rakefile FILE Use FILE as the rakefile. -h --help Prints a summary of options. -g --system Using system wide (global) rakefiles (usually ~/.rake/*.rake ). -n --dry-run Do a dry run without executing actions. -p CODE --execute-print CODE Execute some Ruby code, print the result, then exit. -q --quiet Do not log messages to standard output. -r MODULE --require MODULE Require MODULE before executing rakefile. -s --silent Like --quiet, but also suppresses the 'in directory' announcement. -t --trace Turn on invoke/execute tracing, enable full backtrace. -v --verbose Log message to standard output (default). --rules Trace the rules resolution. SEE ALSO
ruby(1) make(1) http://rake.rubyforge.org/ REPORTING BUGS
Bugs, features requests and other issues can be logged at <http://onestepback.org/redmine/projects/show/rake>. You will need an account to before you can post issues. Register at <http://onestepback.org/redmine/account/register>. Or you can send an email to the author. AUTHOR
Rake is written by Jim Weirich <jim@weirichhouse.org> UNIX
November 7, 2012 UNIX
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