version-erl

#!/usr/bin/env sh
# Name:     version-erl
# Abstract: Print version of currently available Erlang on stdout.
# Requires: Accessible Erlang binaries: uses erl.
# Used by : PEL Emacs support for Erlang to auto-detect available Erlang version.
# Last Modified Time-stamp: <2021-10-15 21:16:08, updated by Pierre Rouleau>
# -----------------------------------------------------------------------------
# Description
# -----------
#
# Usage:  version-erl
#
#  This uses an inline Erlang statement passed to the Erlang interpreter.

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# Script
# ------
#
# Note: the `-sasl errlog_type error` prevents printing PROGRESS REPORT
#       on some versions of Erlang.
#
erl -sasl errlog_type error  -eval '{ok, Version} = file:read_file(filename:join([code:root_dir(), "releases", erlang:system_info(otp_release), "OTP_VERSION"])), io:fwrite(Version), halt().' -noshell
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