How to: find open files by PID
find open files by PID in linux
netstat -tupln
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:55000 0.0.0.0:* LISTEN 52480/docker-proxy
tcp 0 0 0.0.0.0:1515 0.0.0.0:* LISTEN 52518/docker-proxy
tcp 0 0 0.0.0.0:1514 0.0.0.0:* LISTEN 52554/docker-proxy
tcp 0 0 0.0.0.0:9200 0.0.0.0:* LISTEN 52451/docker-proxy
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 710/sshd: /usr/sbin
tcp 0 0 0.0.0.0:443 0.0.0.0:* LISTEN 52785/docker-proxy
tcp 0 0 127.0.0.53:53 0.0.0.0:* LISTEN 631/systemd-resolve
tcp6 0 0 :::55000 :::* LISTEN 52487/docker-proxy
tcp6 0 0 :::1515 :::* LISTEN 52534/docker-proxy
tcp6 0 0 :::1514 :::* LISTEN 52561/docker-proxy
tcp6 0 0 :::9200 :::* LISTEN 52459/docker-proxy
tcp6 0 0 :::22 :::* LISTEN 710/sshd: /usr/sbin
tcp6 0 0 :::443 :::* LISTEN 52800/docker-proxy
udp 0 0 127.0.0.53:53 0.0.0.0:* 631/systemd-resolve
udp 0 0 159.69.220.254:68 0.0.0.0:* 629/systemd-network
udp 0 0 0.0.0.0:514 0.0.0.0:* 52574/docker-proxy
udp6 0 0 :::514 :::* 52580/docker-proxy
lsof -p 52800
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
docker-pr 52800 root cwd DIR 8,1 4096 2 /
docker-pr 52800 root rtd DIR 8,1 4096 2 /
docker-pr 52800 root txt REG 8,1 2145411 154862 /usr/bin/docker-proxy
docker-pr 52800 root mem REG 8,1 2216304 137803 /usr/lib/x86_64-linux-gnu/libc.so.6
docker-pr 52800 root mem REG 8,1 240936 137764 /usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2
docker-pr 52800 root 0r CHR 1,3 0t0 5 /dev/null
docker-pr 52800 root 1w CHR 1,3 0t0 5 /dev/null
docker-pr 52800 root 2w CHR 1,3 0t0 5 /dev/null
docker-pr 52800 root 4u IPv6 2762213 0t0 TCP *:https (LISTEN)
docker-pr 52800 root 6u a_inode 0,14 0 12461 [eventpoll]
docker-pr 52800 root 7r FIFO 0,13 0t0 2762214 pipe
docker-pr 52800 root 8w FIFO 0,13 0t0 2762214 pipe
ss -tupln
Netid State Recv-Q Send-Q Local Address:Port Peer Address:Port Process
udp UNCONN 0 0 127.0.0.53%lo:53 0.0.0.0:* users:(("systemd-resolve",pid=631,fd=13))
udp UNCONN 0 0 159.69.220.254%eth0:68 0.0.0.0:* users:(("systemd-network",pid=629,fd=15))
udp UNCONN 0 0 0.0.0.0:514 0.0.0.0:* users:(("docker-proxy",pid=52574,fd=4))
udp UNCONN 0 0 [::]:514 [::]:* users:(("docker-proxy",pid=52580,fd=4))
tcp LISTEN 0 4096 0.0.0.0:9200 0.0.0.0:* users:(("docker-proxy",pid=52451,fd=4))
tcp LISTEN 0 4096 127.0.0.53%lo:53 0.0.0.0:* users:(("systemd-resolve",pid=631,fd=14))
tcp LISTEN 0 128 0.0.0.0:22 0.0.0.0:* users:(("sshd",pid=710,fd=3))
tcp LISTEN 0 4096 0.0.0.0:55000 0.0.0.0:* users:(("docker-proxy",pid=52480,fd=4))
tcp LISTEN 0 4096 0.0.0.0:443 0.0.0.0:* users:(("docker-proxy",pid=52785,fd=4))
tcp LISTEN 0 4096 0.0.0.0:1514 0.0.0.0:* users:(("docker-proxy",pid=52554,fd=4))
tcp LISTEN 0 4096 0.0.0.0:1515 0.0.0.0:* users:(("docker-proxy",pid=52518,fd=4))
tcp LISTEN 0 4096 [::]:9200 [::]:* users:(("docker-proxy",pid=52459,fd=4))
tcp LISTEN 0 128 [::]:22 [::]:* users:(("sshd",pid=710,fd=4))
tcp LISTEN 0 4096 [::]:55000 [::]:* users:(("docker-proxy",pid=52487,fd=4))
tcp LISTEN 0 4096 [::]:443 [::]:* users:(("docker-proxy",pid=52800,fd=4))
tcp LISTEN 0 4096 [::]:1514 [::]:* users:(("docker-proxy",pid=52561,fd=4))
tcp LISTEN 0 4096 [::]:1515 [::]:* users:(("docker-proxy",pid=52534,fd=4))
ss -tupl
Netid State Recv-Q Send-Q Local Address:Port Peer Address:Port Process
udp UNCONN 0 0 127.0.0.53%lo:domain 0.0.0.0:* users:(("systemd-resolve",pid=631,fd=13))
udp UNCONN 0 0 159.69.220.254%eth0:bootpc 0.0.0.0:* users:(("systemd-network",pid=629,fd=15))
udp UNCONN 0 0 0.0.0.0:syslog 0.0.0.0:* users:(("docker-proxy",pid=52574,fd=4))
udp UNCONN 0 0 [::]:syslog [::]:* users:(("docker-proxy",pid=52580,fd=4))
tcp LISTEN 0 4096 0.0.0.0:9200 0.0.0.0:* users:(("docker-proxy",pid=52451,fd=4))
tcp LISTEN 0 4096 127.0.0.53%lo:domain 0.0.0.0:* users:(("systemd-resolve",pid=631,fd=14))
tcp LISTEN 0 128 0.0.0.0:ssh 0.0.0.0:* users:(("sshd",pid=710,fd=3))
tcp LISTEN 0 4096 0.0.0.0:55000 0.0.0.0:* users:(("docker-proxy",pid=52480,fd=4))
tcp LISTEN 0 4096 0.0.0.0:https 0.0.0.0:* users:(("docker-proxy",pid=52785,fd=4))
tcp LISTEN 0 4096 0.0.0.0:1514 0.0.0.0:* users:(("docker-proxy",pid=52554,fd=4))
tcp LISTEN 0 4096 0.0.0.0:1515 0.0.0.0:* users:(("docker-proxy",pid=52518,fd=4))
tcp LISTEN 0 4096 [::]:9200 [::]:* users:(("docker-proxy",pid=52459,fd=4))
tcp LISTEN 0 128 [::]:ssh [::]:* users:(("sshd",pid=710,fd=4))
tcp LISTEN 0 4096 [::]:55000 [::]:* users:(("docker-proxy",pid=52487,fd=4))
netstat -tupln
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:55000 0.0.0.0:* LISTEN 52480/docker-proxy
tcp 0 0 0.0.0.0:1515 0.0.0.0:* LISTEN 52518/docker-proxy
tcp 0 0 0.0.0.0:1514 0.0.0.0:* LISTEN 52554/docker-proxy
tcp 0 0 0.0.0.0:9200 0.0.0.0:* LISTEN 52451/docker-proxy
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 710/sshd: /usr/sbin
tcp 0 0 0.0.0.0:443 0.0.0.0:* LISTEN 52785/docker-proxy
tcp 0 0 127.0.0.53:53 0.0.0.0:* LISTEN 631/systemd-resolve
tcp6 0 0 :::55000 :::* LISTEN 52487/docker-proxy
tcp6 0 0 :::1515 :::* LISTEN 52534/docker-proxy
tcp6 0 0 :::1514 :::* LISTEN 52561/docker-proxy
tcp6 0 0 :::9200 :::* LISTEN 52459/docker-proxy
tcp6 0 0 :::22 :::* LISTEN 710/sshd: /usr/sbin
tcp6 0 0 :::443 :::* LISTEN 52800/docker-proxy
udp 0 0 127.0.0.53:53 0.0.0.0:* 631/systemd-resolve
udp 0 0 159.69.220.254:68 0.0.0.0:* 629/systemd-network
udp 0 0 0.0.0.0:514 0.0.0.0:* 52574/docker-proxy
udp6 0 0 :::514 :::* 52580/docker-proxy
