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Re: [Help-bash] What causes while-read loop to terminate at round 1 when
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From: |
Pierre Gaston |
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Subject: |
Re: [Help-bash] What causes while-read loop to terminate at round 1 when ssh is used inside the loop? |
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Date: |
Sun, 31 May 2015 19:36:47 +0300 |
On Sun, May 31, 2015 at 6:39 PM, Peng Yu <address@hidden> wrote:
> The following code will only run for the first localhost but not the
> second. Does anybody know what is wrong with it?
>
> #!/usr/bin/env bash
>
> while read -r -d $'\n' h
> do
> echo "$h"
> ssh "$h" "last | grep '$USER' | head"
> done < <(printf "%s\n" localhost localhost)
>
> --
> Regards,
> Peng
>
>
ssh is reading all stdin, you can use ssh -n or ssh </dev/null