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Re: [Xen-API] strange bug with xe and bash

To: George Shuklin <george.shuklin@xxxxxxxxx>
Subject: Re: [Xen-API] strange bug with xe and bash
From: Mike McClurg <mike.mcclurg@xxxxxxxxxx>
Date: Sat, 3 Sep 2011 13:48:27 +0100
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On 08/24/2011 09:16 AM, George Shuklin wrote:
Good day.

Found incredibly strange and amazing bug.

If this command issued:

echo $(xe host-list name-label=$(hostname) ) | cat

bash displays: [1]+  Stopped

I don't press Ctrl-Z, it happens by itself.

This works in bash, don't work in csh. This happens irregularly (2-3
times going background, 1-2 times not).

You can replace 'hostname' and 'cat' with any other commands - only xe
in middle does matter. If 'hostname' replaced by text bug not appear.

I could not say I really it bother me, but it really strange. What

Yes, I've noticed this too. This has to do with the way that xe is grabbing the terminal. You may have also noticed this same problem when you pipe xe output to less. When you pipe to less, you have to hit enter after every keypress, instead of less recognising keypreses as they occur.

You can work around this by doing something like this: 'cat /dev/null | xe <command> | less'.


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