Greetings all, using the code found
here, I constructed a program to search for a particular running process. Instead of getting the list, I get the ps USAGE message. why?
Here is my code:
#!/usr/bin/perl -w
use strict;
my $process = "perl";
my @output;
my $kidpid;
if ($kidpid = open(PIPE, "-|")) {
# Parent process. Read data from the child.
@output = <PIPE>;
} else {
# Child process. Execute the command.
die "could not fork" if !defined($kidpid);
exec ("ps", "-ef", "|", "grep", $process) or die "exec failed: $!";
}
BTW, I am currently looking into Proc::ProcessTable...
thanks, mike
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.