Fix bash syntax.
Fix bash syntax.

alexander-at-github/eta,AlexeyRaga/eta,rahulmutt/ghcvm,rahulmutt/ghcvm,pparkkin/eta,rahulmutt/ghcvm,pparkkin/eta,pparkkin/eta,AlexeyRaga/eta,alexander-at-github/eta,alexander-at-github/eta,alexander-at-github/eta,AlexeyRaga/eta,alexander-at-github/eta,AlexeyRaga/eta,pparkkin/eta,AlexeyRaga/eta,rahulmutt/ghcvm,pparkkin/eta,rahulmutt/ghcvm