On Thu, 22 May 2025 01:46:40 GMT, Lance Andersen <[email protected]> wrote:
>> I use exit code, but still keep non-zero instead of > 0. Leave that to
>> future work if we want to have more specific value for exit code for
>> different situations.
>
> Non-zero could also mean negative which we currently do not do nor do,I see
> that going forward as part of future additions to validate
We are somewhat inconsistent in documenting the exit code from our commands as
many do not include any mention
A few for reference
**java command**:
> The following exit values are typically returned by the launcher when the
> launcher is called with the wrong arguments, serious errors, or exceptions
> thrown by the JVM. However, a Java application may choose to return any value
> by using the API call System.exit(exitValue). The values are:
0: Successful completion
>0: An error occurred
**jarsigner command**:
> If there is a failure, the jarsigner command exits with code 1. If there is
> no failure, but there are one or more severe warnings, the jarsigner command
> exits with code 0 when the -strict option is not specified, or exits with the
> OR-value of the warning codes when the -strict is specified. If there is only
> informational warnings or no warning at all, the command always exits with
> code 0.
See
https://docs.oracle.com/en/java/javase/24/docs/specs/man/jarsigner.html#errors-and-warnings
for the full details
**jshell command**:
> /exit [integer-expression-snippet]
> Exits the tool. If no snippet is entered, the exit status is zero. If a
> snippet is entered and the result of the snippet is an integer, the result is
> used as the exit status. If an error occurs, or the result of the snippet is
> not an integer, an error is displayed and the tool remains active.
`% jshell
| Welcome to JShell -- Version 22.0.1
| For an introduction type: /help intro
jshell> System.out.print("hi");
hi
jshell> /exit 1
| Goodbye (1)
% echo $?
1
`
So, currently, the jdk commands use either:
- exit code
- exit value
- exit status
- exit with code
I would probably go with either "exit status" or "exit value"
And as I mentioned in a prior comment we should move away from non-zero and use
either '>0' as java and several unix based commands do or use "greater than 0"
**Note:**
Other several commands such as jdeperscan do not specify the exit status value
and I think we need to document the possible exit status values for the jdk
commands and perhaps target this for jdk 26
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PR Review Comment: https://git.openjdk.org/jdk/pull/24430#discussion_r2102431539
