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Top Forums UNIX for Dummies Questions & Answers Grep not giving expected results Post 302820095 by John K on Wednesday 12th of June 2013 04:06:21 AM
Old 06-12-2013
Grep not giving expected results

Version: RHEL 5.8

I am doing a grep of the piped output from ps command as shown below.
I am grepping for the pattern ora_dbw* . But, in the result set I am seeing strings with ora_dbr* as well like ora_dbrm_SDLM1DAS3 as shown below. Any idea why is this happening ?


Code:
$ ps -ef | grep ora_dbw*
oracle    2565     1  0 May30 ?        00:00:03 ora_dbrm_SDLM1DAS3 ---------> ????
oracle    2621     1  0 May30 ?        00:28:44 ora_dbw0_SDLM1DAS3
oracle    2627     1  0 May30 ?        00:27:09 ora_dbw1_SDLM1DAS3
oracle    2631     1  0 May30 ?        00:27:59 ora_dbw2_SDLM1DAS3
oracle    2635     1  0 May30 ?        00:28:13 ora_dbw3_SDLM1DAS3
oracle    3642     1  0 May30 ?        00:00:02 ora_dbrm_SDLM3DAS3 --------> ????
oracle    3708     1  0 May30 ?        00:00:19 ora_dbw0_SDLM3DAS3
oracle    3714     1  0 May30 ?        00:00:17 ora_dbw1_SDLM3DAS3
oracle    3718     1  0 May30 ?        00:00:16 ora_dbw2_SDLM3DAS3
oracle    3722     1  0 May30 ?        00:00:17 ora_dbw3_SDLM3DAS3
oracle    6653 15952  0 12:40 pts/0    00:00:00 grep ora_dbw*
oracle   32441     1  0 May31 ?        00:00:04 ora_dbrm_SDLM2DAS3
oracle   32507     1  0 May31 ?        00:30:49 ora_dbw0_SDLM2DAS3
oracle   32511     1  0 May31 ?        00:28:37 ora_dbw1_SDLM2DAS3
oracle   32515     1  0 May31 ?        00:28:53 ora_dbw2_SDLM2DAS3
oracle   32519     1  0 May31 ?        00:28:49 ora_dbw3_SDLM2DAS3
$

Tried enclosing the pattern in double quotes


Code:
$ ps -ef | grep "ora_dbw*"
oracle    2565     1  0 May30 ?        00:00:03 ora_dbrm_SDLM1DAS3
oracle    2621     1  0 May30 ?        00:28:44 ora_dbw0_SDLM1DAS3
oracle    2627     1  0 May30 ?        00:27:09 ora_dbw1_SDLM1DAS3
oracle    2631     1  0 May30 ?        00:27:59 ora_dbw2_SDLM1DAS3
oracle    2635     1  0 May30 ?        00:28:13 ora_dbw3_SDLM1DAS3
oracle    3642     1  0 May30 ?        00:00:02 ora_dbrm_SDLM3DAS3
oracle    3708     1  0 May30 ?        00:00:19 ora_dbw0_SDLM3DAS3
oracle    3714     1  0 May30 ?        00:00:17 ora_dbw1_SDLM3DAS3
oracle    3718     1  0 May30 ?        00:00:16 ora_dbw2_SDLM3DAS3
oracle    3722     1  0 May30 ?        00:00:17 ora_dbw3_SDLM3DAS3
oracle    8934 15952  0 12:44 pts/0    00:00:00 grep ora_dbw*
oracle   32441     1  0 May31 ?        00:00:04 ora_dbrm_SDLM2DAS3
oracle   32507     1  0 May31 ?        00:30:49 ora_dbw0_SDLM2DAS3
oracle   32511     1  0 May31 ?        00:28:37 ora_dbw1_SDLM2DAS3
oracle   32515     1  0 May31 ?        00:28:53 ora_dbw2_SDLM2DAS3
oracle   32519     1  0 May31 ?        00:28:49 ora_dbw3_SDLM2DAS3

 

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omega(6)							   Games Manual 							  omega(6)

NAME
omega - a hack-style game with quests. SYNOPSIS
omega [save file] DESCRIPTION
omega is a complex rogue-style game of dungeon exploration. Unlike other such games, there are a number of ways to "win", depending on various actions taken during play. The ways you can get your name on the hiscore board include becoming the highest ranked head of a guild, sect, college, etc., as well as gaining the most points figured from possessions and experience. The game (via the oracle) may impose some structure on your exploration, but you need not follow all of the oracle's advice. There *is* a "total winner" status, by the way. If the save file is not specified, omega gives the player the choice of generating a random character, or playing themselves, doing a short quiz to determine an approximation of their abilities. If the save file is given, omega will restore that save file, and if successful, the save file is deleted. Note that some installations of omega compress the save file, using either compress(1) or gzip(1) - if this is the case, and you have a save file that is uncompressed (such files are generated by omega if it receives a signal during play, for exam- ple), you can compress it (with compress(1) or gzip(1)) and remove the .Z or .gz extension. Alternatively, you may simply run with the uncompressed save file - this will not affect the game in any way, but takes more disk space between games. omega offers a richness of playing detail that goes beyond a simple game like rogue. However, the majority of gameplay is very similar to rogue, hack, ultrarogue, larn, and other such games. The player is represented by the highlighted "@" symbol, objects and terrain features are represented by non-alphabetic symbols, monsters are represented by the various upper and lower case letters, and other humans are rep- resented by a non-highlighted "@". omega currently consists of a countryside in which are sited a city, various villages, several dungeons, and some "special" sites, such as the temples of the various priesthoods. The game starts in the city of Rampart, where all the guilds have headquarters. As a dungeon is explored, all generated levels are saved in memory. However, only one dungeon is "remembered" at a time, so if you enter two dungeons, the first will be forgotten (it will be regenerated should you wish to enter it again). However, if a dungeon is "completed", this fact will be remembered, basically meaning that the unique monster at the bottom will not be regenerated if you've killed it already. SEE ALSO
compress(1), gzip(1), nethack(6) AUTHOR
Laurence Brothers omega(6)
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