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Question regarding the .tar and .jar files


 
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Question regarding the .tar and .jar files

1) What is the comamnd in need to use to find the diff between .tar files.

2) when i unzip the tar file i get .jar files.. the question i have here is i need to find only the modified file list from the .jar file

does any one have done, please do share ....

Thanks

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extcheck(1)						      General Commands Manual						       extcheck(1)

NAME
extcheck - jar conflict detection utility SYNOPSIS
extcheck [ -verbose ] [ -Joption ] targetfile.jar DESCRIPTION
The extcheck utility checks a specified jar file for title and version conflicts with any extensions installed in the JDK software. Before installing an extension, you can use this utility to see if the same or a more recent version of the extension is already installed. The extcheck utility compares the Specification-title and Specification-version headers in the manifest of targetfile.jar file against the corresponding headers in all Jar files currently installed in the extension directory. (The extension directory is jre/lib/ext by default.) The extcheck utility compares version numbers in the same way as the method java.lang.Package.isCompatibleWith. If no conflict is detected, the return code is 0. If the manifest of any jar file in the extensions directory has the same Specification-title and the same or a newer Specification-version number, a non-zero error code is returned. A non-zero error code is also returned if targetfile.jar does not have the Specification-title or Specification-version attributes in its manifest. OPTIONS
The following options are supported: -verbose Lists jar files in the extension directory as they are checked. Additionally, manifest attributes of the target jar file and any conflicting jar files are also reported. -Joption Pass option to the Java virtual machine, where option is one of the options described on the man page for the java applica- tion launcher, java(1). For example, -J-Xms48m sets the startup memory to 48 megabytes. SEE ALSO
jar(1) 13 June 2000 extcheck(1)

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