[tor-bugs] #21581 [Core Tor/Tor]: Make test-network.sh use sh (or bash when it's available)

[Tor Bug Tracker & Wiki]

#21581: Make test-network.sh use sh (or bash when it's available)
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     Reporter:  teor          |      Owner:
         Type:  defect        |     Status:  new
     Priority:  Medium        |  Milestone:  Tor: 0.3.0.x-final
    Component:  Core Tor/Tor  |    Version:
     Severity:  Normal        |   Keywords:
Actual Points:                |  Parent ID:
       Points:                |   Reviewer:
      Sponsor:                |
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 test-network.sh doesn't work very well with non-bash /bin/sh.
 But we can't do #19699 in 0.3.0, so we need a workaround until then.

 This is a bugfix on #21562.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/21581>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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