Re: [monitoring-plugins/monitoring-plugins] Update .travis.yml (#1440)

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You might also consider replacing
  `grep "inet6 ::1" | wc -l`
with 
  `grep -c "inet6 ::1"`

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<p>You might also consider replacing<br>
  <code>grep "inet6 ::1" | wc -l</code><br>
with <br>
  <code>grep -c "inet6 ::1"</code></p>

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