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Full Discussion: Lsof output
Operating Systems OS X (Apple) Lsof output Post 302774413 by bakunin on Friday 1st of March 2013 08:19:26 PM
Old 03-01-2013
Quote:
Originally Posted by sakurashinken
besides the process, process id and owner, I have no idea what these things are. Could someone explain?
Probably shared-memory segments or temporary files. It is hard to tell without the output surrounding it.

Quote:
Originally Posted by sakurashinken
Also, what is /dev/random?
A device which produces a (pseudo-)random sequence of numbers, one every time you query it. For some things in UNIX one needs a random generator (for instance: the retransmission time offset if an Ethernet packet collides with another).

Random bits of "noise" is collected systemwide (i.e. from device drivers) in an "entropy pool". From this pool very high-quality random numbers are generated, but "/dev/random" will stop once the entropy pool is depleted until it is refilled. In most systems there is also a "/dev/urandom", which is will not block in this case, but produce "less random" (the numbers are more predictable).

I hope this helps.

bakunin
 

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XSetSelectionOwner(3X11)					     MIT X11R4						  XSetSelectionOwner(3X11)

Name
       XSetSelectionOwner, XGetSelectionOwner, XConvertSelection - manipulate window selection

Syntax
       XSetSelectionOwner(display, selection, owner, time)
	  Display *display;
	  Atom selection;
	  Window owner;
	  Time time;

       Window XGetSelectionOwner(display, selection)
	  Display *display;
	  Atom selection;

       XConvertSelection(display, selection, target, property, requestor, time)
	  Display *display;
	  Atom selection, target;
	  Atom property;
	  Window requestor;
	  Time time;

Arguments
       display	 Specifies the connection to the X server.

       owner	 Specifies the owner of the specified selection atom.  You can pass a window or

       property  Specifies the property name.  You also can pass

       requestor Specifies the requestor.

       selection Specifies the selection atom.

       target	 Specifies the target atom.

       time	 Specifies the time.  You can pass either a timestamp or

Description
       The function changes the owner and last-change time for the specified selection and has no effect if the specified time is earlier than the
       current last-change time of the specified selection or is later than the current X server time.	Otherwise, the last-change time is set to
       the specified time, with replaced by the current server time.  If the owner window is specified as then the owner of the selection becomes
       (that is, no owner).  Otherwise, the owner of the selection becomes the client executing the request.

       If the new owner (whether a client or is not the same as the current owner of the selection and the current owner is not the current owner
       is sent a event.  If the client that is the owner of a selection is later terminated (that is, its connection is closed) or if the owner
       window it has specified in the request is later destroyed, the owner of the selection automatically reverts to but the last-change time is
       not affected.  The selection atom is uninterpreted by the X server.  returns the owner window, which is reported in and events.	Selections
       are global to the X server.

       can generate and errors.

       The function returns the window ID associated with the window that currently owns the specified selection.  If no selection was specified,
       the function returns the constant If is returned, there is no owner for the selection.

       can generate a error.

       requests that the specified selection be converted to the specified target type:

       o    If the specified selection has an owner, the X server sends a event to that owner.

       o    If no owner for the specified selection exists, the X server generates a event to the requestor with property

       The arguments are passed on unchanged in either of the events.  There are two predefined selection atoms: PRIMARY and SECONDARY.

       can generate and errors.

Diagnostics
       A value for an Atom argument does not name a defined Atom.

       A value for a Window argument does not name a defined Window.

See Also
       X Window System: The Complete Reference, Second Edition, Robert W. Scheifler and James Gettys

															  XSetSelectionOwner(3X11)
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