Here I attached two scripts that might help you working with jar files.

Have you tried to verify that a Class must exists in a lib directory that has few dozens jar files? For example I read from a forum that there is a ServerInfo.properties inside one of tomcat jar, so I run this:

$ scala searchjar.scala ServerInfo /opt/tomcat6/lib
/opt/tomcat6/lib/catalina.jar org/apache/catalina/util/ServerInfo.class

/opt/tomcat6/lib/catalina.jar org/apache/catalina/util/ServerInfo.properties

The script can walk over one or more directory and search all jar files for you.

The second thing I do once a while is I want to see the content of a text inside the jar. For the example above, I can run my second script like this:

$ scala displayjar.scala /opt/tomcat6/lib/catalina.jar org/apache/catalina/util/ServerInfo.properties
# Licensed to the Apache Software Foundation (ASF) under one or more

# contributor license agreements.  See the NOTICE file distributed with

# this work for additional information regarding copyright ownership.

# The ASF licenses this file to You under the Apache License, Version 2.0

# (the "License"); you may not use this file except in compliance with

# the License.  You may obtain a copy of the License at

#

#     http://www.apache.org/licenses/LICENSE-2.0

#

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS,

# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

# See the License for the specific language governing permissions and

# limitations under the License.



server.info=Apache Tomcat/6.0.18

server.number=6.0.18.0

server.built=Jul 22 2008 02:00:36

You can even run the displayjar.scala with just a jar file, and it default to print out the Manifest file content.

Hope these scripts are useful to you.