#top procfs¶

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#top The /proc File System¶

Zobacz także: sysfs | procfs | tmpfs

Dokumentacja kernela: www.kernel.org / filesystems / proc.txt

cpuinfo     Info about the CPU
meminfo     Memory info
devices     Available devices (block and character)
diskstats
partitions  Table of partitions known to the system
mdstat
swaps       Swap space utilization
filesystems Supported filesystems
cmdline     Kernel command line
uptime      Wall clock since boot, combined idle time of all cpus
version     Kernel version

#top /proc/net¶

Dokumentacja kernela: www.kernel.org / proc.txt

The subdirectory /proc/net follows the usual pattern. Table 1-8 shows the additional values you get for IP version 6 if you configure the kernel to support this. Table 1-9 lists the files and their meaning.

Network info in /proc/net:

File                    Content
/proc/net/arp           Kernel  ARP table
/proc/net/dev           network devices with statistics
/proc/net/dev_mcast     the Layer2 multicast groups a device is listening too
                        (interface index, label, number of references, number of bound
                        addresses).
/proc/net/dev_stat      network device status
/proc/net/ip_fwchains   Firewall chain linkage
/proc/net/ip_fwnames    Firewall chain names
/proc/net/ip_masq       Directory containing the masquerading tables
/proc/net/ip_masquerade Major masquerading table
/proc/net/netstat       Network statistics
/proc/net/raw           raw device statistics
/proc/net/route         Kernel routing table
/proc/net/rpc           Directory containing rpc info
/proc/net/rt_cache      Routing cache
/proc/net/snmp          SNMP data
/proc/net/sockstat      Socket statistics
/proc/net/tcp           TCP  sockets
/proc/net/udp           UDP sockets
/proc/net/unix          UNIX domain sockets
/proc/net/wireless      Wireless interface data (Wavelan etc)
/proc/net/igmp          IP multicast addresses, which this host joined
/proc/net/psched        Global packet scheduler parameters.
/proc/net/netlink       List of PF_NETLINK sockets
/proc/net/ip_mr_vifs    List of multicast virtual interfaces
/proc/net/ip_mr_cache   List of multicast routing cache

IPv6 info in /proc/net:

File                 Content
/proc/net/udp6       UDP sockets (IPv6)
/proc/net/tcp6       TCP sockets (IPv6)
/proc/net/raw6       Raw device statistics (IPv6)
/proc/net/igmp6      IP multicast addresses, which this host joined (IPv6)
/proc/net/if_inet6   List of IPv6 interface addresses
/proc/net/ipv6_route Kernel routing table for IPv6
/proc/net/rt6_stats  Global IPv6 routing tables statistics
/proc/net/sockstat6  Socket statistics (IPv6)
/proc/net/snmp6      Snmp data (IPv6)

#top /proc/net/dev¶

cat /proc/net/dev

Przykładowa zawartość /proc/net/dev wyświetlona poleceniem cat po wykonaniu powyższej komendy:

Inter-|   Receive                                                |  Transmit
 face |bytes    packets errs drop fifo frame compressed multicast|bytes    packets errs drop fifo colls carrier compressed
    lo:  740795   10429    0    0    0     0          0         0   740795   10429    0    0    0     0       0          0
  eth0: 5611446   80546    0   67    0     0          0         0  6054835   40746    0    0    0     0       0          0
  sit0:       0       0    0    0    0     0          0         0        0       0    0    0    0     0       0          0

ifconfig -a

Powyższa zawartość wyświetlona poleceniem ifconfig w posób czytelny po wykonaniu powyższej komendy:

eth0      Link encap:Ethernet  HWaddr 00:16:3E:01:00:35
[...]
          RX packets:80546 errors:0 dropped:67 overruns:0 frame:0
          TX packets:40747 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:5611446 (5.3 MiB)  TX bytes:6055765 (5.7 MiB)
          Interrupt:10 Base address:0x6000

lo        Link encap:Local Loopback
[...]
          RX packets:10429 errors:0 dropped:0 overruns:0 frame:0
          TX packets:10429 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:740795 (723.4 KiB)  TX bytes:740795 (723.4 KiB)

sit0      Link encap:IPv6-in-IPv4
[...]
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

#top /proc/net/if_inet6¶

cat /proc/net/if_inet6

Przykładowa zawartość /proc/net/arp wyświetlona poleceniem cat po wykonaniu powyższej komendy:

fd0a200200100041000a002900000023 02 60 00 80     eth0
00000000000000000000000000000001 01 80 10 80       lo
fe8000000000000002163efffe010035 02 40 20 80     eth0

ifconfig

Powyższa zawartość wyświetlona poleceniem ifconfig w posób czytelny po wykonaniu powyższej komendy:

eth0      Link encap:Ethernet  HWaddr 00:16:3E:01:00:35
[...]
          inet6 addr: fd0a:2002:10:41:a:29:0:23/96 Scope:Global
          inet6 addr: fe80::216:3eff:fe01:35/64 Scope:Link
[...]

lo        Link encap:Local Loopback
[...]
          inet6 addr: ::1/128 Scope:Host
[...]

#top /proc/net/arp¶

cat /proc/net/arp

Przykładowa zawartość /proc/net/arp wyświetlona poleceniem cat po wykonaniu powyższej komendy:

IP address       HW type     Flags       HW address            Mask     Device
10.41.0.50       0x1         0x2         00:16:3E:01:00:50     *        eth0
10.41.0.250      0x1         0x2         FE:16:3E:01:00:35     *        eth0

arp -na

Powyższa zawartość wyświetlona poleceniem arp w posób czytelny po wykonaniu powyższej komendy:

? (10.41.0.50) at 00:16:3E:01:00:50 [ether] on eth0
? (10.41.0.250) at FE:16:3E:01:00:35 [ether] on eth0