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Top Forums Shell Programming and Scripting Meaning of WINPORT=22${WINPORT:+:}${WINPORT:-} Post 302861427 by a1_win on Wednesday 9th of October 2013 02:47:22 AM
Old 10-09-2013
Meaning of WINPORT=22${WINPORT:+:}${WINPORT:-}

Hi all,

O/S: Sun Solaris SPARC 64 bits

Could anyone please explain what does the below mean after WINPORT=22 in the below line?

Code:
WINPORT=22${WINPORT:+:}${WINPORT:-}

${WINPORT:+:}${WINPORT:-} ???

On doing echo $WINPORT, I get the port value as:

22

Thanks,
a1_win
 

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ttk::frame(n)							 Tk Themed Widget						     ttk::frame(n)

__________________________________________________________________________________________________________________________________________________

NAME
ttk::frame - Simple container widget SYNOPSIS
ttk::frame pathName ?options? _________________________________________________________________ DESCRIPTION
A ttk::frame widget is a container, used to group other widgets together. STANDARD OPTIONS
-class -cursor -takefocus -style See the ttk_widget manual entry for details on the standard options. WIDGET-SPECIFIC OPTIONS [-borderwidth borderWidth] The desired width of the widget border. Defaults to 0. [-relief relief] One of the standard Tk border styles: flat, groove, raised, ridge, solid, or sunken. Defaults to flat. [-padding padding] Additional padding to include inside the border. [-width width] If specified, the widget's requested width in pixels. [-height height] If specified, the widget's requested height in pix- els. WIDGET COMMAND
Supports the standard widget commands configure, cget, identify, instate, and state; see ttk::widget(n). NOTES
Note that if the pack, grid, or other geometry managers are used to manage the children of the frame, by the GM's requested size will nor- mally take precedence over the frame widget's -width and -height options. pack propagate and grid propagate can be used to change this. SEE ALSO
ttk::widget(n), ttk::labelframe(n), frame(n) KEYWORDS
widget, frame, container Tk 8.5 ttk::frame(n)
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