[jira] [Commented] (BIGTOP-492) make our launcher scripts recognize cascading defaults

["Roman Shaposhnik (Commented) (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/BIGTOP-492?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13238599#comment-13238599 ] 

Roman Shaposhnik commented on BIGTOP-492:
-----------------------------------------

I'm not quite sure whether /etc/<util>rc or /etc/bigtop/<util>rc will be a better name for the system-level rc file for each component.
  
                
> make our launcher scripts recognize cascading defaults
> ------------------------------------------------------
>
>                 Key: BIGTOP-492
>                 URL: https://issues.apache.org/jira/browse/BIGTOP-492
>             Project: Bigtop
>          Issue Type: Bug
>          Components: General
>    Affects Versions: 0.4.0
>            Reporter: Roman Shaposhnik
>            Assignee: Roman Shaposhnik
>             Fix For: 0.4.0
>
>
> Almost all Unix (POSIX?) command line utilities have a nice feature of recognizing cascading defaults. The system-level one is typically named /etc/<util>rc and the user-level one is typically picked from ~/.<util>rc
> I propose that we introduce the same for all of the /usr/bin launcher scripts that we support in Bigtop. The proposed format of the rc files is that of POSIX-compatible sh(1) code snippet with an overall effect of exporting those variables that affect execution.
> Thoughts?

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