my %file = (
   'passwd'     => '/etc/passwd',
   'procdir'    => '/proc',
   'stats'      => '/proc/stat',
   'meminfo'    => '/proc/meminfo',
   'sysinfo'    => '/proc/sysinfo',
   'cpuinfo'    => '/proc/cpuinfo',
   'vmstat'     => '/proc/vmstat',
   'loadavg'    => '/proc/loadavg',
   'sockstats'  => '/proc/net/sockstat',
   'netstats'   => '/proc/net/dev',
   'diskstats'  => '/proc/diskstats',
   'partitions' => '/proc/partitions',
   'uptime'     => '/proc/uptime',
   'hostname'   => '/proc/sys/kernel/hostname',
   'domain'     => '/proc/sys/kernel/domainname',
   'kernel'     => '/proc/sys/kernel/ostype',
   'release'    => '/proc/sys/kernel/osrelease',
   'version'    => '/proc/sys/kernel/version',
);