pkttyagent - Textual authentication helper


   pkttyagent [--version] [--help]

   pkttyagent [--process { pid | pid,pid-start-time } |
              --system-bus-name busname] [--notify-fd fd] [--fallback]


   pkttyagent is used to start a textual authentication agent for the
   subject specified by either --process or --system-bus-name. If neither
   of these options are given, the parent process is used.

   To get notified when the authentication agent has been registered
   either listen to the Changed D-Bus signal or use --notify-fd to pass
   the number of a file descriptor that has been passed to the program.
   This file descriptor will then be closed when the authentication agent
   has been successfully registered.

   If --fallback is used, the textual authentication agent will not
   replace an existing authentication agent.


   If the authentication agent could not be registered, pkttyagent exits
   with an exit code of 127. Diagnostic messages are printed on standard

   If one or more of the options passed are malformed, pkttyagent exits
   with an exit code of 126. If stdin is a tty, then this manual page is
   also shown.

   If the authentication agent was successfully registered, pkttyagent
   will keep running, interacting with the user as needed. When its
   services are no longer needed, the process can be killed.


   Since process identifiers can be recycled, the caller should always use
   pid,pid-start-time when using the --process option. The value of
   pid-start-time can be determined by consulting e.g. the proc(5) file
   system depending on the operating system. If only pid is passed to the
   --process option, then pkttyagent will look up the start time itself
   but note that this may be racy.


   Written by David Zeuthen <> with a lot of help from
   many others.


   Please send bug reports to either the distribution or the polkit-devel
   mailing list, see the link on how to


   polkit(8), pkaction(1), pkcheck(1), pkexec(1)


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