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Full Discussion: while and do problems
Top Forums Shell Programming and Scripting while and do problems Post 302582560 by kshji on Friday 16th of December 2011 10:33:38 AM
Old 12-16-2011
Code:
# this is forever loop -almost, try to press CTRL-D ... loop will end
skipfield=Y
while [ $skipfield != "Y" ]
print "Do you want to skip this field Y/N?"
read skipfield
do
      :   # between do and done, like then and fi need 1-n commands
         #  :  = builtin nop command, return always true
done

Why ?
while command(s)
do
...
done
=> exit code of command, between while and do you can put command lines, but return code of last line is the important.
=> read some and press EOF = exit code is not 0 => while end

So, maybe this is better:
Code:
# this will end if you press Y or CTRL-D
while
     print "Do you want to skip this field Y/N?"
     read skipfield
     [ "$skipfield" != "Y" ]  # - without " " you get error if press ENTER or CTRL-D
do
      : 
done

Last edited by kshji; 12-16-2011 at 11:38 AM..
 

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LEARN ABOUT SUSE

ttk_frame

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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