Erlang/OTP 18.2 has been released

December 16, 2015 · by Henrik Nord

Erlang/OTP 18.2 is a service release on the 18 track with mostly bug fixes, but is does contain a number of new features and characteristics improvements as well. 

Some highlights of the release are:

  • ssl: Add configurable upper limit for session cache.
  • erts: Add function enif_getenv to read OS environment variables in a portable way from NIFs.
  • kernel: Add {line_delim, byte()} option to inet:setopts/2 and decode_packet/3
  • ssh: The ‘ecdsa-sha2-nistp256’, ‘ecdsa-sha2-nistp384’ and ‘ecdsa-sha2-nistp521’ signature algorithms for ssh are implemented. See RFC 5656.
  • ssh: The ssh:daemon option dh_gex_groups is extended to read a user provided ssh moduli file with generator-modulus pairs. The file is in openssh format.
  • Thanks to 41 different contributors!

You can find the Release Notes with more detailed info at

You can download the full source distribution from

Note: To unpack the TAR archive you need a GNU TAR compatible program. For installation instructions please read the README that is part of the distribution.

You can also find the source code at in the official Erlang repository. Git tag OTP-18.2

The Windows binary distributions can be downloaded from

You can also download the complete HTML documentation or the Unix manual files

You can also read the documentation on-line here:  (see the Release Notes mentioned above for release notes which  are not updated in the doc, but the new functionality is)

We also want to thank those that sent us patches, suggestions and bug reports.

The Erlang/OTP Team at Ericsson