本节内容：
在perl中创建linux进程的方法。
例1：创建进程
复制代码 代码示例:
#!/usr/bin/perl
#a simple demon
use strict;
my $pid = fork();
print $pid."n";
if($pid)
{
print "processing...n";
exit(0);
}
else
{
print "child processing...n";
}
setpgrp();
while(1)
{
sleep(10);
open(MYFILE,">>/tmp/test.log");
my($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst)=localtime(time);
$year+=1900;$mon++;
print MYFILE ("Now is $year-$mon-$mday $hour:$min:$sec.n");
close(MYFILE);
}
例2：定时删除/tmp目录下的文件
复制代码 代码示例:
#!/usr/bin/perl
use strict;
our $DIR_PATH="/tmp";
&main();
exit;
sub main
{
die( "Can't fork") unless defined (my $pid = fork());
print "Process...n$pidn";
setpgrp();
while(1)
{
opendir DIR, ${DIR_PATH} or die "Can not open "$DIR_PATH"n";
my @filelist = readdir DIR;
my @res;
my $a;
my $file;
open(MYFILE,">>/tmp/delfile.log");
foreach $file (@filelist)
{
($file eq "..") and next;
($file eq ".") and next;
@res = stat($DIR_PATH."/".$file);
$a = time() - @res[10];
if ($a > 258200 )
{
system("rm -rf ".$DIR_PATH."/".$file);
print MYFILE $DIR_PATH."/".$file."n";
}
}
close(MYFILE);
sleep(86400);
}
}
