fix: ignore extraneous Erlang output during when CLI installation (#487)

Author: lucaspin

install-self-hosted-toolbox

@@ -75,7 +75,8 @@ fi
 
 
 echo "Installing the when CLI"
-ERLANG_VERSION=$(erl -eval 'erlang:display(erlang:system_info(otp_release)), halt().' -noshell | tr -d '"\r')
+ERLANG_VERSION=$(erl -eval 'erlang:display(erlang:system_info(otp_release)), halt().' -noshell | tail -n1 | tr -d '"\r')
+echo "Erlang version: $ERLANG_VERSION"
 install_cmd mv ~/.toolbox/when_otp_$ERLANG_VERSION $INSTALL_PATH/when
 install_cmd chmod +x $INSTALL_PATH/when
 if [[ $? -eq 0 ]];then

install-toolbox

@@ -140,7 +140,8 @@ if [[ `uname` != "Darwin" ]]; then
   fi
 
   echo "Installing the when CLI"
-  ERLANG_VERSION=$(erl -eval 'erlang:display(erlang:system_info(otp_release)), halt().' -noshell | tr -d '"\r')
+  ERLANG_VERSION=$(erl -eval 'erlang:display(erlang:system_info(otp_release)), halt().' -noshell | tail -n1 | tr -d '"\r')
+  echo "Erlang version: $ERLANG_VERSION"
   install_cmd mv ~/.toolbox/when_otp_$ERLANG_VERSION $INSTALL_PATH/when
   install_cmd chmod +x $INSTALL_PATH/when
   if [[ $? -eq 0 ]];then