How to set bash auto logout expiration in ubuntu 20.04

How to set bash auto logout expiration in ubuntu 20.04 ?

I,m setting the variable TMOUT for root user to 2 hours on my server using following bash-command:

sudo export TMOUT=7200

But it does not work at all, are there any other solutions to achieve this, other than putting that variable in my .profile ?

You could set a log out script in /etc/profile.d:

• Create the file /etc/profile.d/autologout.sh:

  sudo nano /etc/profile.d/autologout.sh

• The contents of autologout.sh:

  #!/bin/sh
  # Sets auto log out for all users to 2 hours
  TMOUT=7200
  readonly TMOUT
  export TMOUT
  

• Set permissions for the script:

  sudo chmod 0755 /etc/profile.d/autologout.sh

• Reload the profile or log out and back in.

  source /etc/profile.d/autologout.sh