Section: flatpak enter (1)
flatpak-enter - Enter an application
flatpak enter [OPTION...] INSTANCE COMMAND [ARG...]
Enter a running sandbox.
must be either the pid of a process running in a flatpak sandbox, or the ID of a running application or a the instance ID of a running sandbox.
is the command to run in the sandbox. Extra arguments are passed on to the command.
This creates a new process within the running sandbox, with the same environment. This is useful when you want to debug a problem with a running application.
This command requires extra privileges, so must be run as root or via e.g. sudo. To get TAB completion for the application ID, use sudo -E.
The following options are understood:
Show help options and exit.
Print debug information during command processing.
Print OSTree debug information during command processing.
$ flatpak enter 15345 sh