You are right to use the while loop. However, if you are continually running
the same command and storing that value in $foo, how can you expect it to
change? Does the external program change it's return value?
Can you explain in more detail what you are trying to achieve.
This example shows how the while loop will halt.
$bar = 10;
while ($foo <= $bar) {
print "$foo\n";
$foo++;
}
HTH
John
-----Original Message-----
From: Mark Richmond [mailto:[EMAIL PROTECTED]]
Sent: 05 February 2002 03:50
To: [EMAIL PROTECTED]
Subject: Newbe looping questions
How do I loop until the value of variable changes?
In this example at some point the value of $foo
will change and I can continue
It seems that I need to re-eval the value some how
$bar = foo ;
$foo = qx(os_cmd); # sets $foo to foo
while ($foo eq $bar) {
$foo = qx(os_cmd);
print "Print loop forever \n";
}
This just loops forever It never sees that the value
of $foo because it's in the loop. What an I missing
-mark
-
Mark Richmond <[EMAIL PROTECTED]>
Airvana Inc.
25 Industrial Ave.
Chelmsford, MA 01824
Voice: 978-250-2669
Fax: 978-250-3910
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