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Contents 1 OS : os.getenv 1.1 Arguments 1.2 Returns 1.3 Remarks 1.4 Requirements 1.5 Examples 1.6 Tips for getenv (edit)

OS : os.getenv

Arguments

os.getenv( envname )

• envname (required, string)

the name of the process environment variable to retrieve.

Returns

The value of the environment variable specified as an argument, or nil if that variable does not exit.

Remarks

This function returns the value of an environment variable from the machine running the script. To obtain the value of an environment variable from a remote machine, see the fusion:GetEnv() function.

Requirements

• eyeonScript 5.0
• Fusion 5.0

Examples

function GetFusion()
  -- can we find the environment variable
  local fupath = os.getenv("FUSION_LOCATION")
 
  if fupath == nil then
    print("environment variable FUSION_LOCATION is not defined.")
    os.exit(2001)
  end
 
 
  if fileexists(fupath) == nil then
    print("FUSION_LOCATION does not point to a valid file.")
    os.exit(2002)
  end
 
  if os.executebg(fupath) then
    while fusion == nil do
      wait(1)
      fusion = Fusion()
      -- this needs a time-out of sort
      -- to avoid infinite loops
    end
  end
 
  return fusion
end

Tips for getenv (edit)

EyeonTips:Script/Reference/Libraries/os/getenv