net/templates/run: let user confirm close of tmux

Don't immediately close tmux on exit. Without this patch the error
messages printed in error code paths are not visible to the user.

Change-Id: I4a98e7eb7691b7b954ee7edd4ed488ae3c1dd835
---
M net/templates/run.sh
1 file changed, 21 insertions(+), 0 deletions(-)

diff --git a/net/templates/run.sh b/net/templates/run.sh
index d4edbaa..e9f10de 100755
--- a/net/templates/run.sh
+++ b/net/templates/run.sh
@@ -8,6 +8,15 @@
   exec tmux new-session -s "$tmux_session" -n "RUN" "$0" "inside-tmux"
 fi
 
+exit_confirm() {
+  trap - EXIT INT TERM 0
+  if [ "${TERMINAL}" = "tmux" ]; then
+    echo "Hit enter to close tmux"
+    read enter_to_continue
+  fi
+}
+trap exit_confirm EXIT INT TERM 0
+
 if ! ../fill_config.py --check-stale; then
 	echo
 	echo "WARNING: STALE CONFIGS - your net configs are older than the templates they should be based on!"

