Beefy Boxes and Bandwidth Generously Provided by pair Networks
Clear questions and runnable code
get the best and fastest answer
 
PerlMonks  

comment on

( #3333=superdoc: print w/replies, xml ) Need Help??
Hi! I tried to extract messages from the etc/mtab. Here's what I did, its very simple. I'm just beggining to learn RegEx, please bear with me hehe..
sub scan_cddvd { # mtab file /etc/mtab # cd/dvd signature /dev/sr0 open(MYINPUTFILE, "</etc/mtab"); my $cddvd_path = 'not found'; while(<MYINPUTFILE>){ my($line) = $_; chomp($line); if($line =~ m/^\/dev\/sr/){ print "FOUND CD/DVD\n"; print $line , "\n"; #$line =~ /(\/media\/.*)\ /; $line =~ /(\/media\/\S+)\s+/; my $newline = $1; print $newline , "\n"; while($newline =~ m/\\040/){ $newline =~ s/\\040/ /; } print $newline , "\n"; $cddvd_path = $newline } } close MYINPUTFILE; return $cddvd_path; }
I made a timer of some sort and calls this function to determine if a CD / DVD is inside the drive.works pretty ok. :D hehe. I would be applying the same concept with usb flash drives. Instead of looking for /dev/sr, I'd be looking for /dev/sdb hehe.hope it would work just fine.
Mabuhay Civil Engineers! :D

In reply to Re: Detect Plugged USB Flash Drive / CD in CDROM Drive by renegadex
in thread Detect Plugged USB Flash Drive / CD in CDROM Drive by renegadex

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 examining the Monastery: (2)
As of 2022-07-04 12:07 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    No recent polls found

    Notices?