profile, add variable and function for using preferred notification executable.

tasks/general/acct_mgmt/users.yml

@@ -141,6 +141,11 @@
       if [[ -n "$XDG_SESSION_ID" ]]; then
         setxkbmap -layout us -variant altgr-intl
       fi
+    export_notify: |
+      export NOTIFY="`which fyi 2>/dev/null || which notify-send 2>/dev/null`"
+      function notify() {
+        $NOTIFY $@
+      }
 
 - name: General | Account Management | Users | Files | RC Variables
   set_fact:
@@ -1200,6 +1205,7 @@
       {{ export_terminal }}
       {{ export_browser }}
       {{ keyboard_settings }}
+      {{ export_notify }}
     rc_common: |
       # Fixes "command not found" when using aliases within functions.
       shopt -s expand_aliases