安裝網路監測工具

$ sudo apt install nethogs

然後在終端執行

$ sudo nethogs

## 可能會報以下錯誤
# ioctl failed while establishing local IP for selected device veth20cf3fc. You may specify the device on the command line.

若報錯需指定裝置，則指定具體的網口，可通過 ifconfig 檢視裝置名稱

$ ifconfig

eno1      Link encap:Ethernet  HWaddr 0c:c4:7a:e6:4a:b8
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          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:1000
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
          Memory:fb120000-fb13ffff

eno2      Link encap:Ethernet  HWaddr 0c:c4:7a:e6:4a:b9
          inet addr:192.168.6.31  Bcast:192.168.6.255  Mask:255.255.255.0
          inet6 addr: 2001:da8:d800:7306:ec4:7aff:fee6:4ab9/64 Scope:Global
          inet6 addr: fe80::ec4:7aff:fee6:4ab9/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:293845736 errors:0 dropped:2234 overruns:1186 frame:0
          TX packets:755625613 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:237647351984 (237.6 GB)  TX bytes:1064607047634 (1.0 TB)
          Memory:fb100000-fb11ffff
 

指定檢視裝置即可

$ sudo nethogs eno2

按 q 鍵可退出。