module Propellor.Property.Group where import Propellor type GID = Int exists :: Group -> Maybe GID -> Property NoInfo exists (Group group') mgid = check test (cmdProperty "addgroup" $ args mgid) `describe` unwords ["group", group'] where groupFile = "/etc/group" test = not . elem group' . words <$> readProcess "cut" ["-d:", "-f1", groupFile] args Nothing = [group'] args (Just gid) = ["--gid", show gid, group']