Capture console output from Lua system call

shell.lua

---
-- Function to retrieve console output
--
local shell={}


function shell.capture(cmd)
    local handle = assert(io.popen(cmd, 'r'))
    local output = assert(handle:read('*a'))
    handle:close()
    local raw=output
    output = string.gsub(
        string.gsub(
            string.gsub(output, '^%s+', ''),
            '%s+$',
            ''
        ),
        '[\n\r]+',
        ' '
    )
	local o={}
	o["out"] = output
	o["raw"] = raw
   return o
end

return shell