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Full Discussion: How to grep a log file for words listed in separate text file?
Top Forums Shell Programming and Scripting How to grep a log file for words listed in separate text file? Post 302852545 by nbsparks on Wednesday 11th of September 2013 06:16:39 PM
Old 09-11-2013
[SOLVED] How to grep a log file for words listed in separate text file?
Hello,

I want to grep a log ("server.log") for words in a separate file ("white-list.txt") and generate a separate log file containing each line that uses a word from the "white-list.txt" file.

Putting that in bullet points:
  • Search through "server.log" for lines that contain any word contained within "white-list.txt" file
  • Create separate file ("player_activity.log")
I've done this before with this command line:
Code:
grep -E "player1|player2|player3" server.log >player_activity.log

But I'm tired of modifying that line and would just like to draw from my known player list in a different file. I want it to substitute the "player1|player2|player3" with looking through a white-list.txt that looks like:

Code:
player1
player2
player3
player4
player5
player6

The output should look like this:
Code:
2013-08-11 08:46:23 [INFO] player1[/xxx.xxx.xxx.xxx:53531] logged in with entity id 1072 at ([regolare] -220.7308956951062, 62.0, -108.79669524885138)
2013-08-11 08:46:23 [INFO] Player joined: player1
2013-08-11 08:50:50 [INFO] player2[/xxx.xxx.xxx.xxx:53019] logged in with entity id 5685 at ([mundusprime] 1995.377727365253, 75.0, 883.1106329044326)
2013-08-11 08:50:50 [INFO] Player joined: player2
2013-08-11 08:51:00 [INFO] <player1> morning
2013-08-11 08:51:06 [INFO] <player2> hola mi compadre!
2013-08-11 08:51:31 [INFO] <player2> how goes the pyramid?
2013-08-11 08:51:53 [INFO] <player1> roof is complete, need to finish clearing interior.
2013-08-11 08:52:06 [INFO] <player2> I took a peek the other day, it's impressive!

Last edited by nbsparks; 09-11-2013 at 08:11 PM..
 

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LEARN ABOUT DEBIAN

guards

GUARDS(1)						User Contributed Perl Documentation						 GUARDS(1)

NAME

       guards - select from a list of files guarded by conditions

SYNOPSIS

       guards [--prefix=dir] [--path=dir2:dir2:...] [--default=0|1]	   [-v|--invert-match] [--list|--check] [--config=file]        symbol ...

DESCRIPTION

       The script reads a configuration file that may contain so-called guards, file names, and comments, and writes those file names that satisfy
       all guards to standard output. The script takes a list of symbols as its arguments. Each line in the configuration file is processed
       separately. Lines may start with a number of guards. The following guards are defined:

	   +xxx Include the file(s) on this line if the symbol xxx is defined.

	   -xxx Exclude the file(s) on this line if the symbol xxx is defined.

	   +!xxx Include the file(s) on this line if the symbol xxx is not defined.

	   -!xxx Exclude the file(s) on this line if the symbol xxx is not defined.

	   - Exclude this file. Used to avoid spurious --check messages.

       The guards are processed left to right. The last guard that matches determines if the file is included. If no guard is specified, the
       --default setting determines if the file is included.

       If no configuration file is specified, the script reads from standard input.

       The --check option is used to compare the specification file against the file system. If files are referenced in the specification that do
       not exist, or if files are not enlisted in the specification file warnings are printed. The --path option can be used to specify which
       directory or directories to scan.  Multiple directories are separated by a colon (":") character. The --prefix option specifies the
       location of the files.

AUTHOR

       Andreas Gruenbacher <agruen@suse.de> (SuSE Linux AG)

perl v5.14.2							    2012-03-04								 GUARDS(1)
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