Perseverance pays off.
Solution to checking if a file exists is to store result in a variable before
it gets converted:
$result = sprintf("%s", $t->cmd("test -f $testFile && print 1 || print 0"));
Note: None of the following worked:
$result = ! $t->cmd( "test -f $testFile ; echo $?" );
$result = $t->cmd("test -f $testFile ; print $? ");
$result = $t->cmd("test -f $testFile && print 1 || print 0");
$result = $t->cmd("if [ -f $testFile ] ;then print 1; else print 0");
(this still doesn't make sense to me)
-JW
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