07-18-2013
Learning System Administration: What to focus on?
In the fall I am taking courses in System Admin and Networking Admin, along with Cisco classes. Sometime next year I hope to get Red Hat and CCNA certifications, then try to get some experience and a job.
I am wondering what I can focus on in the meantime (and in my spare time) that will contribute to my knowledge of systems administration.
I have some experience with C++, PHP and MySql programming but they're not really related to SysAdmin.
I was thinking learning Perl would be more helpful. Or if I could do some type of project. I'd appreciate any other ideas though. I would like to focus on something that I can put to use and/or gain experience in SysAdmin.
Any ideas would be appreciated.
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LEARN ABOUT HPUX
xtcallacceptfocus
XtCallAcceptFocus() XtCallAcceptFocus()
Name
XtCallAcceptFocus - offer the input focus to a child widget.
Synopsis
Boolean XtCallAcceptFocus(w, time)
Widget w;
Time *time;
Inputs
w Specifies the widget; must be of class Core or any subclass thereof.
time Specifies the X time of the event that is causing the accept focus.
Returns
True if w took the input focus; False if w did not take the input focus.
Description
XtCallAcceptFocus() calls the specified widget's Core class accept_focus() method, passing it the specified widget and time, and True if
the widget took the input focus, or False otherwise. If the accept_focus() method is NULL, XtCallAcceptFocus() returns False.
Usage
Generally, only widgets should call XtCallAcceptFocus(), and generally only on their descendants.
Note that calling a widget's accept_focus() method does not automatically assign the input focus, and does not mean that the widget will
necessarily take the input focus. The accept_focus() method must decide whether or not to take the focus and then take it with XSetInput-
Focus() or XtSetKeyboardFocus().
Background
Widgets that need the input focus can call XSetInputFocus() explicitly, pursuant to the restrictions of the Inter-Client Communications
Convention Manual. To allow outside agents, such as the parent, to cause a widget to take the input focus, every widget exports an
accept_focus() method. The widget returns a value indicating whether it actually took the focus or not, so that the parent can give the
focus to another widget. Widgets that need to know when they lose the input focus must use the Xlib focus notification mechanism explic-
itly (typically by specifying translations for FocusIn and FocusOut events). Widget classes that never want the input focus should set the
accept_focus() method to NULL.
See Also
XtSetKeyboardFocus(1),
accept_focus(4).
Xt - Keyboard Handling XtCallAcceptFocus()