sysctl command is used to configure kernel parameters at runtime
Command format:
sysctl -w variable=value
sysctl -p <filename> (default /etc/sysctl.conf)
sysctl -a
The meaning of common parameters:
-w temporarily changes the value of a specified parameter, such as
sysctl -w net.ipv4.ip_forward=1
-a show all system parameters
-p Load system parameters from the specified file, if not specified, it will be loaded from /etc/sysctl.conf
Permanent settings:
Writing to /etc/sysctl.conf has taken effect permanently. If you want to make the newly written take effect immediately, you can execute the following sysctl -p