2026/11/10 14:00:12 filan[2] E unknown option --help filan by Gerhard Rieger and contributors - see http://www.dest-unreach.org/socat/ Analyze file descriptors of the process Usage: filan [options] options: -?|-h print this help text -d increase verbosity (use up to 4 times) -i only analyze this fd -n analyze all fds from 0 up to fdnum-1 (default: 1024) -s simple output with just type and socket address or path -S like -s but improved format and contents -f analyze file system entry -T wait before analyzing, useful to connect with debugger -r raw output for time stamps and rdev -L follow symbolic links instead of showing their properties -W after printing FDs info, wait and reprint info on SIGWINCH -o output goes to filename, that can be: a regular file name, the output goes to that + , output goes to the file descriptor (which must be open writable) the 3 special names stdin stdout and stderr