To reload the variables in the sysctl.conf file on a Linux system, you can use the sysctl command with the -p option. This option tells sysctl to read the sysctl.conf file and apply any changes to the current system configuration.
For example, to reload the sysctl.conf file, you can run the following command:
sudo sysctl -p
This command will read the sysctl.conf file and apply any changes to the current system configuration. You may need to enter your password or use sudo to run the command with superuser privileges.
Keep in mind that the sysctl.conf file contains kernel parameters that control various aspects of the system's behavior, such as network settings, memory management, and security. Modifying these parameters can have a significant impact on the system's performance and security, so make sure you understand the implications of any changes you make to the sysctl.conf file. Consult the documentation and online resources for more information on working with the sysctl.conf file and the sysctl command.