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Full Discussion: Troubleshooting whiptail
Top Forums Shell Programming and Scripting Troubleshooting whiptail Post 303021638 by annacreek on Monday 13th of August 2018 06:26:49 PM
Old 08-13-2018
I have build a new function with limited scaffold.

It 'runs" with an error @ line 67, not sure if I should be concerned about the error at

this time.



I know how it suppose to work, the part I do not understand is

where does the file "choice" @ line 58 come from.



The selection is in "results" and I am reading "choice".

It just " does not compute ".





As written now I have deliberately deleted lines of code between lines 60 and 61 -

no selection from menu is implemented.



However

I do expect lines 60 and 61 to execute to indicate that the process went thru them.
THAT is the issue - if I add the " do /done" selection code it never gets processed and

I DO NOT understand why.



Code:
                         whiptail_DEBUG(){
   44 echo " whiptail_DEBUG  @ line $LINENO"
   45 echo "Passed parameter #1 is $1"
   46 echo "Passed parameter #2 is $2"
   47 echo "Passed parameter #3 is $3"
   48 echo "Passed parameter #4 is $4"
   49 whiptail \
   50 --title "$1" \
   51 --separate-output  \
   52 --checklist  "Choose: " 20 78 15 \
   53 "$2" "" on  \
   54 "$3" "" off \
   55 "$4" "" off
   56 2>results               selection goes here 



   57 echo "function whiptail_DEBUG  @ line $LINENO"
   58 while read choice                  why am I reading "choise" and not "results" ? 

   59 do
   60 echo "START do/ while read @ Line $LINENO read  $choice"
   61 echo "END   do/ while read @ Line $LINENO read  $choice"
   62 done < results
   63 echo "czech file results  @ Line $LINENO "
   64 if [ $exitstatus = 0 ]; then
   65 echo "TOK " $choice
   66 else
   67 echo "function status failed "
   68 fi
   69 echo "function  whiptail_DEBUG  @ line $LINENO"
   70 }

 

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LEARN ABOUT PHP

apc_cas

APC_CAS(3)								 1								APC_CAS(3)

apc_cas - Updates an old value with a new value

SYNOPSIS

       bool apc_cas (string  $key, int	$old, int  $new)

DESCRIPTION

       apc_cas(3)  updates  an	already existing integer value if the $old parameter matches the currently stored value with the value of the $new
       parameter.

PARAMETERS

	      o $key
		- The key of the value being updated.

	      o $old
		- The old value (the value currently stored).

	      o $new
		- The new value to update to.

RETURN VALUES

	Returns TRUE on success or FALSE on failure.

EXAMPLES

       Example #1

	      apc_cas(3) example

	      <?php
	      apc_store('foobar', 2);
	      echo '$foobar = 2', PHP_EOL;
	      echo '$foobar == 1 ? 2 : 1 = ', (apc_cas('foobar', 1, 2) ? 'ok' : 'fail'), PHP_EOL;
	      echo '$foobar == 2 ? 1 : 2 = ', (apc_cas('foobar', 2, 1) ? 'ok' : 'fail'), PHP_EOL;

	      echo '$foobar = ', apc_fetch('foobar'), PHP_EOL;

	      echo '$f__bar == 1 ? 2 : 1 = ', (apc_cas('f__bar', 1, 2) ? 'ok' : 'fail'), PHP_EOL;

	      apc_store('perfection', 'xyz');
	      echo '$perfection == 2 ? 1 : 2 = ', (apc_cas('perfection', 2, 1) ? 'ok' : 'epic fail'), PHP_EOL;

	      echo '$foobar = ', apc_fetch('foobar'), PHP_EOL;
	      ?>

	      The above example will output something similar to:

	      $foobar = 2
	      $foobar == 1 ? 2 : 1 = fail
	      $foobar == 2 ? 1 : 2 = ok
	      $foobar = 1
	      $f__bar == 1 ? 2 : 1 = fail
	      $perfection == 2 ? 1 : 2 = epic fail
	      $foobar = 1

SEE ALSO 
apc_dec(3), apc_store(3).
PHP Documentation Group 														APC_CAS(3)
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