Files

# show all open Files
lsof /var

# suppress open files by kernel
lsof -b

# show the count of all open files
lsof | wc -l

# show open files per user
lsof -u steh

# show all open files under a directory
lsof +D /var/www

Open Networkports

# show all open ports
lsof -i

# show all open TCP Ports
lsof -i tcp

# find which process is using a specific port
lsof -i :8080

References

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