Beefy Boxes and Bandwidth Generously Provided by pair Networks
laziness, impatience, and hubris
 
PerlMonks  

comment on

( #3333=superdoc: print w/replies, xml ) Need Help??
Help! I am in need of some divine wisdom!

I have been asked if there is a way to monitor the output of an exsisting script and send an email notification if a certain event occurs. The script that runs dumps its output to standard out, and runs forever or until killed.(Imagine doing a tail -f on syslog.log or something, they want to be notified if a certain condition occurs) I tried throwing it into an array, but that just sits there until it is finished getting STDIN, which in the case of this script, never happens so that doesnt work...

So my question is this: Is there a way to my perl script monitor in real time the output of another script while it is dumping output? they are looking for a way to do a

./script |./monitor.pl or just
have ./monitor.pl call script and watch it...either way works...but I am starting to doubt that it can be done..

Please advise....

update (broquaint): added <code> tags and some further formatting


In reply to reading output from another script by Octavian

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":



  • 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> <u> <ul>
  • 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 intervention).
  • Want more info? How to link or or How to display code and escape characters are good places to start.
Log In?
Username:
Password:

What's my password?
Create A New User
Domain Nodelet?
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others studying the Monastery: (4)
As of 2022-01-29 08:42 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?
    In 2022, my preferred method to securely store passwords is:












    Results (74 votes). Check out past polls.

    Notices?