Hello everybody ,,
I'm a beginner in perl .I'm having a small problem with my code :
$|=1;
my $myohmy : shared = 1;
print "Checking ..";
$thr = threads->create(\&checkdot)->detach;
$thr1 = threads->create(\&psou);
$thr1->join();
$myohmy = 0;
sub checkdot
{
$|++;
while ( $myohmy == 1 )
{
print ".";
sleep 1;
}
} ###### above code not relevant #####
sub psou
{
open (PS, "$psout |"); #### $psout is the command #######
}
while (<PS>) ####### PROBLEM -> No output here ####
{
..
######## It is here the problem occurs ,, the filehandle PS is not visible , I'm pretty sure it's a scoping problem , because when the "open" statement is outside the subroutine, the code after "while" works .
I have also tried creating a global variable , and with the three argument open , but
it doesn't work . Could you please suggest me as to how I can fix this #############
Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
Read Where should I post X? if you're not absolutely sure you're posting in the right place.
Please read these before you post! —
Posts may use any of the Perl Monks Approved HTML tags:
- a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
| |
For: |
|
Use: |
| & | | & |
| < | | < |
| > | | > |
| [ | | [ |
| ] | | ] |
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.