$VAR1 = {
          '4' => {
                   'group	' => ' 3
',
                   'user	' => ' root
',
                   'host	' => ' 10.0.200.181
',
                   'cmd	' => ' ls -l /
'
                 },
          '1' => {
                   'cmd ' => ' md5sum /vmlinuz
',
                   'group ' => ' 1
',
                   'user ' => ' root
',
                   'host ' => ' 10.0.200.181
'
                 },
          '3' => {
                   'group	' => ' 1
',
                   'user	' => ' root
',
                   'host	' => ' 10.0.200.183
',
                   'cmd	' => ' ls -l /
'
                 },
          '2' => {
                   'group	' => ' 2
',
                   'user	' => ' root
',
                   'host	' => ' 10.0.200.184
',
                   'cmd	' => ' ls -l /
'
                 }
        };
1.
Use of uninitialized value in concatenation (.) or string at ./master-backup-daemon.pl line 245.
Host = 
2.
Use of uninitialized value in concatenation (.) or string at ./master-backup-daemon.pl line 245.
Host = 
3.
Use of uninitialized value in concatenation (.) or string at ./master-backup-daemon.pl line 245.
Host = 
4.
Use of uninitialized value in concatenation (.) or string at ./master-backup-daemon.pl line 245.
Host =