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module Propellor.Property.Group where
import Propellor.Base
type GID = Int
exists :: Group -> Maybe GID -> Property UnixLike
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']
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