#!/bin/sh
# written by cleemy desu wayo / Licensed under CC0 1.0
#
# test sha256sum & openssl
#

LANG=C   ; export LANG
LC_ALL=C ; export LC_ALL

get_hash() {
  if type sha256sum > /dev/null 2>&1; then
    echo 'mode: sha256sum' 1>&2
    sha256sum | awk '{print $1}'
  elif type openssl > /dev/null 2>&1; then
    echo 'mode: openssl' 1>&2
    openssl sha256 | awk '{print $NF}'
  else
    echo 'mode: error' 1>&2
    exit 1
  fi
}

get_hash_result=$(printf aaa | get_hash)
printf 'result: %s\n' "$get_hash_result"

if [ "x$get_hash_result" = "x9834876dcfb05cb167a5c24953eba58c4ac89b1adf57f28f2f9d09af107ee8f0" ]; then
  echo 'ok'
  exit 0
fi

echo 'error'
exit 1