nsenter:tldr:38119

The command "nsenter" is used to run a program with namespaces of another process. Namespaces are used in Linux systems to isolate and control resources such as processes, network interfaces, mount points, etc. This command provides a way to enter and execute a program inside a specific namespace.

Here is a breakdown of the provided command:

• "nsenter" is the command itself.
• "--target ${pid}" specifies the process ID (PID) of the process whose namespace we want to enter. The variable "${pid}" should be replaced with the actual PID.
• "--all" is an option that indicates to enter all the namespaces associated with the target process. This includes the IPC, network, mount, PID, UTS, and user namespaces.
• "${command}" represents the program or command that you want to run inside the specified namespace. Replace "${command}" with the desired program or command.
• "${command_arguments}" is an optional field that can be used to provide any additional arguments or parameters required by the specified command.

To summarize, the given command "nsenter --target ${pid} --all ${command} ${command_arguments}" enters the namespaces of a specified process and executes a given command with the provided arguments within those namespaces.