One way would be to break up the 15 minute sleep into smaller mini-sleeps. Presumably, waking up would allow your script to respond to the request to terminate.
Any signal, or at least any non-ignored signal interrupts sleep. No need for polling. See also sleep:
Causes the script to sleep for (integer) EXPR seconds, or forever if no argument is given. Returns the integer number of seconds actually slept.
May be interrupted if the process receives a signal [...]
Note: sleep() returns how long it actually slept, so your program can continue sleeping for the remaining time if some signal happened in between.
The C API sleep() behaves similar, see sleep(3), but it returns the remaining sleep time, not the time actually slept.
Today I will gladly share my knowledge and experience, for there are no sweeter words than "I told you so". ;-)
Are you posting in the right place? Check out Where do I post X? to know for sure.
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
Want more info? How to link or
or How to display code and escape characters
are good places to start.