Message indicator after specific time?

Question

Is there any tool this can indicate message after each 30 minutes of uptime ?

actually I spend too many time on computer so i want tool which indicate message after every 30 minutes.

like, when uptime is 30 minutes I want sound notification and message like :- "You have on laptop since 30 minutes turn off and study".

same for next 30 minutes till 2 hours. ie :

30 minutes

1 hour

1:30 hours

2:00 hours

Is this possible ? if yes how to do this ?

Answer 1

Create a script with following containt

#!/bin/bash

first_u=$(awk  '{printf "%.0f" , $0/60;}' /proc/uptime)
while true
do
  uptime_m=$(awk  '{printf "%.0f" , $0/60;}' /proc/uptime)
  (( time_dif=$uptime_m - $first_u ))


 if [  $time_dif -eq 30 ]; then
   notify-send "You have on laptop since 30 minutes"
   sleep 1800
    notify-send "You have on laptop since 1 hour"
   sleep 1800
    notify-send "You have on laptop since 1:30 hour"
   sleep 1800
    notify-send "You have on laptop since 2 hour"
   break
 fi
 sleep 50
done

Save it and make it executable using

chmod a+x <script_name>

Now run it

 ./<script_name>

Answer 2

1 Try alarm-clock-applet

sudo apt-get install alarm-clock-applet

2 Also Gnome Clock has a countdown feature. But it has to be set manually every time.

 sudo apt-get install gnome-clocks