[jira] [Created] (MNG-7270) maven shell script wrapper (init) calls "which", which might not be installed

["Jonathan Dowland (Jira)" <ji...@apache.org>]

Jonathan Dowland created MNG-7270:
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             Summary: maven shell script wrapper (init) calls "which", which might not be installed
                 Key: MNG-7270
                 URL: https://issues.apache.org/jira/browse/MNG-7270
             Project: Maven
          Issue Type: Bug
          Components: Command Line
    Affects Versions: 3.8.2
         Environment: UNIX/POSIX, Linux
            Reporter: Jonathan Dowland


The "init" shell wrapper script, that often ends up as /usr/bin/mvn in downstream distributions, calls the program "which" in the situation where JAVA_HOME is not defined.

"which" is a separate binary program that may or may not be installed. Increasingly it may not be in environments which are trying to reduce their install footprint e.g. containers.

A portable alternative is to use `command -v` with some defensive commands prior (unalias, unset: see [https://pubs.opengroup.org/onlinepubs/009695399/utilities/command.html).]--

I've got a PR ready to go.



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