$ Linux Command

Network

ifdown

Bring a network interface down.

networkconnectivityadmin

Additional Notes

ifdown is a network command used to bring a network interface down. It is useful for taking interfaces offline during maintenance, troubleshooting, or reconfiguration.

ifdown and ifup are part of the ifupdown package on Debian-based systems. Other distributions may use NetworkManager or netplan instead.

Syntax

ifdown [options] interface

Parameters

  • options: Flags that change how ifdown behaves.
  • interface: Network interface to bring down (e.g., eth0).

Common Options

  • --help: Show command help when supported.
  • --version: Show version information when supported.

Examples

ifdown --help
man ifdown

Practical Notes

Options can vary by distribution and package version. Use man ifdown, ifdown --help, or the package documentation for exact syntax.