Try to cut down on some of the messages in the bot's output window.

bot.sh

@@ -25,7 +25,7 @@ echo "JOIN #$channel" | tee -a "$input"
 tail -f "$input" | telnet "$server" "$port" | while read result
 do
   # log the session
-  echo "$(date "+[$dateFormat]") $result" | tee -a "$log"
+  echo "$(date "+[$dateFormat]") $result" >> "$log"
   # do things when you see output
   case "$result" in
     # respond to ping requests from the server
@@ -83,7 +83,7 @@ set +f
     ;;
     # run when a message is seen
     *PRIVMSG*)
-      echo "$result" | tee -a "$log"
+      echo "$result" >> "$log"
       who="${result%%!*}"
       who="${who:1}"
       from="${result#*#}"
@@ -139,7 +139,7 @@ set -f
 set +f
     ;;
     *)
-      echo "$result" | tee -a "$log"
+      echo "$result" >> "$log"
     ;;
   esac
 done