sysctl - configure kernel parameters at runtime

To view all current kernel parameters invoke the sysctl $ sudo sysctl -a

To view the swappiness value $ sudo sysctl vm.swappiness $ sysctl kernel.hostname

To Modify the Kernel Parameters $ sudo sysctl -w parameter=value

To enable IPv4 packet forwarding $ sudo sysctl -w net.ipv4.ip_forward=1

To set a parameter permanently $ sudo sysctl -w net.ipv4.ip_forward=1 >> /etc/sysctl.conf

To read values from file $ sudo sysctl -p /etc/sysctl.d/file_name.conf

To print variable names without values $ sudo sysctl -N vm.swappiness

To print values only of the given variable $ sudo sysctl -n vm.swappiness

To read values from all system directories $ sudo sysctl --system

To print version and help options $ sudo sysctl --version $ sudo sysctl --help

regards, T.Dhanasekar