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[Unit] Description=Test for Environment [Service] ExecStart=/bin/sh -x -c 'test "$${VAR1-unset}" = "unset" && test "$${VAR2-unset}" = "unset" && test "$${VAR3-unset}" = "unset"' Type=oneshot Environment="VAR1=word1 word2" VAR2=word3 "VAR3=$word 5 6" Environment=