I came across the need for identifying this recently – the command I used to count up the total entries (so more than just file handles, but it’s relative so therefore relevant in my opinion) is: lsof | awk ‘{print $1}’ | sort | uniq -c | sort -rn | head This gives something like … Read more
I don’t know why you are trying to do this, but you should be able to attach to the process using gdb and then call close() on the fd. Example: In one shell: cat In another shell: $pidof cat 7213 $gdb -p 7213 … lots of output … (gdb) Now you tell gdb to execute … Read more
Run lsof -P. And make sure the P goes before the i, if you combine the option with -i: lsof -Pi According to man lsof, -P inhibits the conversion of port numbers to port names for network files. Inhibiting the conversion may make lsof run a little faster. It is also useful when port name … Read more
To show all networking related to a given port: lsof -iTCP -i :port lsof -i :22 To show connections to a specific host, use @host lsof -i@192.168.1.5 Show connections based on the host and the port using @host:port lsof -i@192.168.1.5:22 grepping for LISTEN shows what ports your system is waiting for connections on: lsof -i| … Read more
That’s simple: sudo fs_usage | grep [path_to_file]