Команды SFK


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Раздел 6. Networking - Сеть
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Команда: netlog
sfk tolog [-help]
sfk tonetlog [server[:port]]|[port]

   Send text output of a command to terminal, and/or append
   it to a log file, and/or send it to a network text viewer.
   The log target(s) can be specified in the following ways:

   1. by defining an environment variable:

      set SFK_LOGTO=net[:hostname[:port][,raw]
      set SFK_LOGTO=file:mylog.txt
      set SFK_LOGTO=term

      where targets can be combined like:

      set SFK_LOGTO=term,file:log.txt,net,duplex

   2. by using tonetlog to force sending by network.
      in that case, a hostname and port can be specified
      as parameters. the default is to send to localhost.

   If no log target is specified all text goes to terminal.

   A recommended GUI tool to view and filter network text
   is Depeche View. Type sfk getdv to download, then run
   the tool by dview -net for instant net text display.
   It runs with Windows, and on Linux/Mac using WINE.

   parameters   (with tonetlog only)
      server    IP or name of target machine to send text to.
      port      target port, default is 21323 (SFK UDP Text).
                you may also type a port without "server:".

   options
      -h[elp]   print this help text (same as "sfk netlog").
      -duplex   request a reply for each message sent.
                much slower, but it is made sure that the
                receiver actually receives all text, which
                is not sure without -duplex.
      -timeout=n  with -duplex: time to wait for a reply.
                  default is 1000 msec.
      -delay=n  if not using -duplex then wait so many msec
                after each message sent (default is 10).
                delay is required with longer text as
                receiver may fail to cache all messages.
      -raw      send raw UDP text without sfktxt header.
                cannot be combined with -duplex.
      -toiso[=c]  converts utf8 to iso-8859-1
                with default character c for non-8bit codes.
      -nolf     do not append LF after single line text.
      -usecr    append CR instead of LF after single line text.
      -clear    clear target log. cannot be used with -raw.
      -verbose  tell log target if taken from environment.
      -recsize=n UDP max message size, default is 1000 bytes.

   SFK_LOGTO accepted fields
      term,file,net,raw,duplex,timeout,delay,toiso,nolf

   Send And Forget versus Duplex Transfer
      By default, SFK netlog sends text without checking
      if it arrives at receiver. This is the way that
      plain UDP works, and it makes sense for scripts
      that shall NOT slow down or even stop just because
      the receiver is too slow, or not present at all.
      However, it is NOT guaranteed that all text arrives
      in complete, or in the same order as sent.
      If text is lost you may increment the -delay, or use
      the -duplex option. With duplex, however,
      non listening or slow receivers will cause delays
      and error messages and may stop command execution.

   Working process example: remote compile scripts
      Type "sfk netlog -full" for example scripts how to run
      batch files on remote machines and view their output.

   see also
      sfk fromnet -help   - print incoming network text
      sfk udpsend         - send UDP text and binary messages
      sfk udpdump         - print incoming raw UDP messages
      sfk append          - append text output to a file
      sfk echo            - for the list of possible colors
      sfk view            - more about the text viewer program
      sfk samp cppnetlog  - sample C++  code for sending text
      sfk samp javanetlog - sample Java code for sending text

   web reference
      http://stahlworks.com/sfk-netlog

   examples
      sfk echo "[Red]foo[def] and [Blue]bar[def]" +tonetlog
        sends colored text to a viewer on the same machine.
        Red with big 'R' sends bright color, 'r'ed sends dark.
        Type sfk getdv then dview -net to download
        and run the Depeche View network text viewer tool.

      dir | sfk tonetlog 192.168.1.100
        send output of a folder listing to machine .100

      set SFK_LOGTO=term,net:192.168.1.100
      cl mysrc.c 2>&1 | sfk tolog
        sends output of a command "gcc" as UDP text both
        to terminal and to a text viewer running on .100

      set SFK_LOGTO=term,net,duplex,timeout:3000
      cl mysrc.c 2>&1 | sfk tolog
        similar to above, but sends output to a viewer on the
        local machine, asking for receipts within 3 seconds.

      set SFK_LOGTO=file:log1.txt,net:192.168.1.30:5000,raw
      sfk list mydir +tolog
        append filename list of folder mydir to log1.txt and
        send it as raw network text to machine .30 port 5000.

      dview -net:3000,ip
        runs dview on port 3000 with sender ip display.

      sfk tail -f mylog.txt +tonetlog .229:3000 +loop
        whenever mylog.txt changes, send changed text lines
        to a machine ending with .229 in the same subnet
        on port 3000.