使用Net :: SSH2检索top命令的输出

Question

我正在尝试使用Net :: SSH2 Perl模块检索top命令的输出，但我每次都得到null输出。

代码

use Net::SSH2;
use strict;

my $ssh = Net::SSH2->new();

$ssh->connect('xx.xx.xx.xx');

$ssh->auth(username => 'xxxxxx', password => 'xxxxx');

my  $channel = $ssh->channel() or do { print" [LOG ERROR]: Failed to create channel. Exiting ...\n"};

$channel->blocking(0);

$channel->shell() ;

sleep(5);

my $cmd='top -n 1';

print $channel "$cmd\n";        

sleep(5);      

while(<$channel>)
  {
     print $_;
  }


$channel->close(); 

$ssh->disconnect();

有人可以帮忙吗。

Answer 1

使用'top -b -n 1'

而不是'top -n 1'或'top'