Find process running on port

Commands

• Win netstat –na | find "<PORT>" e.g. netstat –na | find "4444" or netstat -a | find "3306" (note: require the double quote symbol, not single quote symbol) for Win
• macOS
  • netstat -vanp tcp | grep 4444 or
  • lsof -i tcp:4444 or lsof -i :4444
  • sudo lsof -i -P | grep LISTEN | grep :$PORT
• Linux CentOS7 netstat -na | grep <port> or ps -elf | grep <port>

## windows
## After running process on windows, and then input the command: netstat –na | find "4444"
  TCP    0.0.0.0:4444           0.0.0.0:0              LISTENING
  TCP    [::]:4444              [::]:0                 LISTENING

## mac
## After running process on mac, and then input the command: netstat -vanp tcp | grep 4444
tcp46      0      0  *.4444                 *.*                    LISTEN      131072 131072  15476      0 0x0000 0x00000006
tcp4       0      0  127.0.0.1.54419        127.0.0.1.4444         TIME_WAIT   408300 146988  15476      0 0x2031 0x00000000

## mac
## After running process on mac, and then input the command: lsof -i tcp:4444
COMMAND   PID  USER   FD   TYPE             DEVICE SIZE/OFF NODE NAME
java    15476 user    8u  IPv6 0x8eb77926a50f8a53      0t0  TCP *:krb524 (LISTEN)

問題排除

FIND: 參數格式不正確

問題: Win netstat –na | find 4444 輸入後遇到「FIND: 參數格式不正確」錯誤訊息。

解決方式: 請將 <port> 加上雙引號，例如: netstat –na | find "4444"

相關資料

• 程式扎記: [Windows 技巧 windows常用網路管理指令 - netstat]
• macos - Find (and kill) process locking port 3000 on Mac - Stack Overflow
• sockets - How to find all the listening port in PHP? - Stack Overflow
• List open ports and listening services
• Linux / UNIX Find Out What Program / Service is Listening on a Specific TCP Port