Hi Monks,
So I have a conceptual question. I am wondering if there's a way that I can distinguish between different childs; is there a child number, like first child, second child etc? What I would like is, each time the parent spawns off a child it would also give the child some distinct number so the different childs can, say, look at different files. For example:
#!/usr/bin/perl
@dirname;
$dirname[0]="TestList1.log";
$dirname[1]="TestList2.log";
$dirname[2]="TestList3.log";
for(1..4) {
my $pid = fork();
if ($pid) {
# parent
push(@childs, $pid);
print "we are in the parent bus \n";
waitpid($pid,0);
} elsif ($pid == 0) {
# child
# here I want to read a different file each child
# so child 1 would read dirname[0]
# so child 2 would read dirname[1]
# so child 3 would read dirname[2]
# and they would all do the same thing,
# but on different files
# something like:
#$mm = @child array's element number
open (filelist, @dirname[$mm]) || die "couldn't open the file!";
@filename;
@filename = <filelist>;
print "@filename \n";
sleep 5;
exit(0);
} else {
die "couldn’t fork: $! \n";
}
print "LAST IN FOR \n";
}
print "AFTER FOR \n";
Thanks a lot!
- cartmanofvan
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.