zwp

  https://www.iana.org/protocols/apply

  https://www.iana.org/form/ports-services

    def execute(f)
      f.call "test response"
    end

    perform = TOPLEVEL_BINDING.method(:execute)

    perform.call Kernel.method(:puts)

  RTLD_NODELETE (since glibc 2.2)
    Do not unload the shared object during dlclose().
    Consequently, the object's static and global variables
    are not reinitialized if the object is reloaded with
    dlopen() at a later time.

    sqlite-utils create-table ~/commands.db commands id integer text text --pk id
    PROMPT_COMMAND="( fc -n -l -1 | perl -p -e 's/^\s+//; chomp if eof' | sqlite-utils insert --text ~/commands.db commands - & )"