I am trying to retrieve the "Implementation version" from one of the .jar file
The command which tried is as below.
I am able to get the version as below
But the problem is the above command is not terminating naturally. I have to forcefully exit the command to return to the shell terminal.
On extracting the .jar file there is a MANIFEST file and "Implementation-Version" is written inside the MANIFEST file.Please help in getting the Implementation version from the jar file.
Moderator's Comments:
Please use CODE tags correctly as required by forum rules! Tagging your entire text is NOT the way to go!
---------- Post updated at 07:34 AM ---------- Previous update was at 07:24 AM ----------
I will abide this rule.It was mistakenly put.
Last edited by RudiC; 10-26-2017 at 09:30 AM..
Reason: Corrected CODE tags.
Hi vgersh99,
Iam sorry for that. In future, I will start new threads for different topics. Assuming that we don't know what the name of the jar file, we are searching for is, do we have any way, of finding a string or a file in it. Is there any Unix command for it?
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Discussion started by: risarose87
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LEARN ABOUT MOJAVE
extcheck
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)