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Full Discussion: Echo not displaying variable in If-Else condition
Top Forums Shell Programming and Scripting Echo not displaying variable in If-Else condition Post 302771898 by Chetanz on Friday 22nd of February 2013 04:43:53 AM
Old 02-22-2013
Echo not displaying variable in If-Else condition
Code:
 
if [ "${x_oug}" -ne 0 ]
then
echo "Entry Valid                  :  ${x_oug}"
else
echo "Entry Invalid                  : " 0
fi

In the above code the 3rd line is not working... it does not print anything

I tried following as well .. but no luck!

Code:
echo "Entry Valid                   :   ${x_oug}"
echo "Entry Valid                   :   " ${x_oug}
echo "Entry Valid                   :   $x_oug
echo "Entry Valid                   : " "${x_oug}"

However, if I put a constant like following it works correctly

Code:
echo "Entry valid                  : 5 "

In fact I am forced to use if else as echo not prinitng the variable when it has 0 value

Please help me on this

Thanks and Regards
Chetanz
 

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LEARN ABOUT OSX

tklib_history

history(n)					       Provides a history for Entry widgets						history(n)

__________________________________________________________________________________________________________________________________________________

NAME

       history - Provides a history for Entry widgets

SYNOPSIS

       package require Tcl  8.4

       package require Tk  8.4

       package require history	?0.1?

       ::history::init pathName ?length?

       ::history::remove pathName

       ::history::add pathName text

       ::history::get pathName

       ::history::clear pathName

       ::history::configure pathName option ?value?

       bell

_________________________________________________________________

DESCRIPTION

       This package provides a convenient history mechanism for Entry widgets.	The history may be accessed with the up and down arrow keys.

       ::history::init pathName ?length?
	      Arranges	to  remember  the  history of the named Entry widget. An optional length determines the number of history entries to keep.
	      This may be changed later with ::history::configure. History entries must be added with the ::history::add command before  they  can
	      be seen.

       ::history::remove pathName
	      Forgets all history entries for the Entry pathName and removes the history bindings.

       ::history::add pathName text
	      This command is used to add history entries to an Entry that has previously had ::history::init called on it. This command should be
	      called from your Entry handler with the contents of the entry (or whatever you wish to add to the history).

       ::history::get pathName
	      This command returns a list containing the history entries for the Entry pathName

       ::history::clear pathName
	      This command clears the history list for the named Entry.

       ::history::configure pathName option ?value?
	      This command queries or sets configuration options. Currently the options recognized are length and alert. Setting the length deter-
	      mines the number of history entries to keep for the named Entry. Alert specifies the command to run when the user reaches the end of
	      the history, it defaults to

       bell

       entry .e
       bind .e <Return> [list ProcessEntry %W]
       ::history::init .e
       pack .e

       proc ProcessEntry {w} {
	   set text [$w get]
	   if {$text == ""} { return }
	   ::history::add $w $text
	   puts $text
	   $w delete 0 end
       }

KEYWORDS

       entry, history

history 								0.1								history(n)
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