Comments on: Grepping for classes in jars http://www.philvarner.com/blog/2008/05/29/grepping-for-classes-in-jars/ mostly technical stuff Wed, 01 Sep 2010 13:03:19 +0000 http://wordpress.org/?v=2.9.1 hourly 1 By: Craft http://www.philvarner.com/blog/2008/05/29/grepping-for-classes-in-jars/comment-page-1/#comment-1095 Craft Thu, 22 Jul 2010 23:21:12 +0000 http://www.philvarner.com/blog/2008/05/29/grepping-for-classes-in-jars/#comment-1095 Seems like everyone has one of these scripts . . . Mine uses "unzip -l" instead of "jar tvf". I find unzip faster both in start up time and in processing time. Usually not noticeable until you query thousands upon thousands of the suckers. I also do """find $2 -name '*.[jwe]ar'""" to search J2EE artifacts as well. I also wrap the unzip | grep in an if/then statement. By default the clause just prints the file out, but one of the inputs to the script is another script which I use to modify the behavior a la ghetto closures. Seems like everyone has one of these scripts . . .

Mine uses "unzip -l" instead of "jar tvf". I find unzip faster both in start up time and in processing time. Usually not noticeable until you query thousands upon thousands of the suckers.

I also do """find $2 -name '*.[jwe]ar'""" to search J2EE artifacts as well.

I also wrap the unzip | grep in an if/then statement. By default the clause just prints the file out, but one of the inputs to the script is another script which I use to modify the behavior a la ghetto closures.

]]> By: Phil http://www.philvarner.com/blog/2008/05/29/grepping-for-classes-in-jars/comment-page-1/#comment-903 Phil Tue, 03 Jun 2008 03:19:00 +0000 http://www.philvarner.com/blog/2008/05/29/grepping-for-classes-in-jars/#comment-903 Yes, that's a good option too. I like the "always" echo $jar so I know if I've accidentally set it on a huge NFS mount that will keep it busy for hours. One minor drawback of grep -q is that you find out if the classname is in the jar, but not at a glance what the FQN of the class is. Yes, that's a good option too. I like the "always" echo $jar so I know if I've accidentally set it on a huge NFS mount that will keep it busy for hours. One minor drawback of grep -q is that you find out if the classname is in the jar, but not at a glance what the FQN of the class is.

]]> By: msa http://www.philvarner.com/blog/2008/05/29/grepping-for-classes-in-jars/comment-page-1/#comment-902 msa Mon, 02 Jun 2008 14:52:50 +0000 http://www.philvarner.com/blog/2008/05/29/grepping-for-classes-in-jars/#comment-902 ... i'd use: jar tvf $jar | grep -q "$1" && echo $jar … i'd use:

jar tvf $jar | grep -q "$1" && echo $jar

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