sysctl:tldr:f75f8

The command "sysctl -p" is used to apply changes made in the system's networking configuration files without having to reboot the system.

In Unix-like operating systems, the sysctl command is used to view, modify, or configure kernel parameters at runtime. These parameters are stored in a hierarchical structure called the sysctl tree.

When changes are made to the system's networking configuration files (such as /etc/sysctl.conf or /etc/sysctl.d/*.conf), they are not automatically applied. Instead, the sysctl -p command is used to load and apply these configuration changes.

By running "sysctl -p", the changes specified in the networking configuration file(s) are read and applied by the kernel. This command is typically used after modifying network-related parameters to make them take effect immediately, without needing to restart the system.