[root@nailgun ~]# erl -eval '{ok, Version} = file:read_file(filename:join([code:root_dir(), "releases", erlang:system_info(otp_release), "OTP_VERSION"])), io:fwrite(Version), halt().' -noshell 19.3.6.12
[root@nailgun ~]# erl -eval '{ok, Version} = file:read_ file(filename: join([code: root_dir( ), "releases", erlang: system_ info(otp_ release) , "OTP_VERSION"])), io:fwrite(Version), halt().' -noshell
19.3.6.12