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setcap:tldr:328e6
setcap: The optional `-n {{rootuid}}` argument can be used to set the file capability for use only in a user namespace with this root user ID owner.
$ setcap -n ${rootuid} '${cap_net_admin}' ${filename}
try on your machine
The command "setcap -n ${rootuid} '${cap_net_admin}' ${filename}" sets a capability on a specific file.
Here is a breakdown of the command:
- "setcap" is the command used to manipulate POSIX capabilities in Linux systems.
- "-n" is an option for the setcap command that allows users to define capabilities in human-readable format rather than numeric values.
- "${rootuid}" is a variable that represents the UID (User ID) of the root user. The root user typically has administrative privileges.
- "${cap_net_admin}" is a variable that represents the specific capability being set. In this case, it is the capability called "cap_net_admin," which grants the ability to perform various network-related administrative tasks.
- "${filename}" is a variable representing the name of the file on which the capability is being set.
Overall, this command is setting the capability "cap_net_admin" on the given file, allowing the user with UID equal to ${rootuid} to perform network administrative tasks on that file.
This explanation was created by an AI. In most cases those are correct. But please always be careful and
never run a command you are not sure if it is safe.