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https://issues.apache.org/jira/browse/HIVE-6694?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13949752#comment-13949752
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Szehon Ho commented on HIVE-6694:
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Nice, it looks good. One minor suggestion is to remove the commented code.
That brings up a question, Hive CLI does variable substitution, but here it is
commented (not sure intentionally?). Why the difference, is it to prevent
collision with shell variables?
> Beeline should provide a way to execute shell command as Hive CLI does
> ----------------------------------------------------------------------
>
> Key: HIVE-6694
> URL: https://issues.apache.org/jira/browse/HIVE-6694
> Project: Hive
> Issue Type: Improvement
> Components: CLI, Clients
> Affects Versions: 0.11.0, 0.12.0, 0.13.0
> Reporter: Xuefu Zhang
> Assignee: Xuefu Zhang
> Attachments: HIVE-6694.patch
>
>
> Hive CLI allows a user to execute a shell command using ! notation. For
> instance, !cat myfile.txt. Being able to execute shell command may be
> important for some users. As a replacement, however, Beeline provides no such
> capability, possibly because ! notation is reserved for SQLLine commands.
> It's possible to provide this using a slightly syntactic variation such as
> !sh cat myfilie.txt.
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