keepalive 检测web

v-dev-redis01:/root# cat a1.pl 
sub check_web{
 use  LWP::UserAgent;  
$web = shift;
my $ua = LWP::UserAgent->new;
$ua->timeout(5);
$ua->env_proxy;
$ua->agent("Mozilla/8.0");
my $response = $ua->get("$web");
if ($response->is_success) {
# print $response->decoded_content;  # or whatever
 return 1;
}
else {return 0;
} };

$var=&check_web("$ARGV[0]"); 
print "$var
";
v-dev-redis01:/root# perl a1.pl https://www.zjtest2.com
1
v-dev-redis01:/root# perl a1.pl https://www.zjtest100.com
0