12 December 2021

To be sure that a jar or war file built is a valid one, there is a command that come to the rescue:

RESULT=$(jar tvf myfile.jar > /dev/null 2&1)
echo $RESULT

RESULT should be:

• Equal to zero if jar or war is valid
• Otherwise it is not valid

Let's look at the options and argument used in jar tvf myfile.jar command:

• t option: view the table of contents of the JAR file
• v option: produces verbose output on stdout
• f option: indicates that the JAR file whose contents are to be viewed is specified on the command line
• jar-file argument: is the path and name of the JAR file

This command could be used also to view the content of a jar or war file.

References

• Oracle documentation on this command

---

© 2020-2021 | This work by ipsedixit is licensed under CC BY 4.0

Mixed with Bootstrap v3.1.1 | Baked with JBake v2.6.6