Fix handling the error "prlctl not found"

Parallels / docker-machine-parallels

Parallels driver for Docker Machine https://github.com/docker/machine

MIT License

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Fix handling the error "prlctl not found" #49

Closed legal90 closed 8 years ago

legal90 commented 8 years ago

Fix handling the error "prlctl not found"
Simplify the code, remove duplications

This PR fixes an issue when driver tries to execute prlctl commands even if Parallels Desktop is not installed at all. There was a bug (or typo? :) ) in exec.ErrNotFound comparison.

I've also refactored some code: fixed style offenses and removed duplications from prlctl.go

cc: @racktear

legal90 commented 8 years ago

Acceptance tests pass OK.