Improve explicitness of help doc of --command on rez-env

[brycegbrazen]

Felt like this explicit mention of non-interactivity is helpful for users new to Rez.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 58.05%. Comparing base (dc2c777) to head (ee4e056).

Additional details and impacted files

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  Coverage   58.05%   58.05%           
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  Files         126      126           
  Lines       17035    17035           
  Branches     3490     3490           
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  Hits         9889     9889           
  Misses       6482     6482           
  Partials      664      664           

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[bpabel]

Thanks for your recommendation! I agree it could be better worded. A few things I think could be improved:

• "read" is a poor verb choice; all arguments are read. "execute" would be a better verb.
• denoting it as a "string" is redundant, all commands are strings.
• "command arguments" is misleading; it's actually a full command and command arguments.

Something like "Execute command within rez environment and exit..." would be better, plus your other additions (also, replace "command arguments" with just "command")

Would you mind updating?

[bpabel]

Also, something I just realized, the command and arguments passed to -c must be passed in as a single shell argument, whereas the command and arguments after -- are all passed in as separate shell arguments.

That should probably be noted somehow in the help text.