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# nettool(n) 0.5.4 tcllib "nettool"

## Name

nettool - Tools for networked applications

## Synopsis

- package require Tcl 8.5 9
- package require nettool ?0.5.4?
- package require twapi 3.1
- package require ip 0.2
- package require platform 0.2

- ::cat filename
- ::nettool::allocate_port startingport
- ::nettool::arp_table
- ::nettool::broadcast_list
- ::nettool::claim_port port ?protocol?
- ::nettool::cpuinfo args
- ::nettool::find_port startingport
- ::nettool::hwid_list
- ::nettool::ip_list
- ::nettool::mac_list
- ::nettool::network_list
- ::nettool::port_busy port
- ::nettool::release_port port ?protocol?
- ::nettool::status
- ::nettool::user_data_root appname

## Description

The nettool package consists of a Pure-tcl set of tools to perform common network functions that would normally require different packages or calls to exec, in a standard Tcl interface. At present nettool has reference implementations for the following operating systems: Windows, MacOSX, and Linux (debian).

## Commands

::cat filename

  Dump the contents of a file as a result.

::nettool::allocate_port startingport

  Attempt to allocate startingport, or, if busy, advance the port number sequentially until a free port is found, and claim that port. This command uses a built-in database of known ports to avoid returning a port which is in common use. (For example: http (80))

::nettool::arp_table

  Dump the contents of this computer's Address Resolution Protocol (ARP) table. The result will be a Tcl formatted list: macid ipaddrlist ...

::nettool::broadcast_list

  Returns a list of broadcast addresses (suitable for UDP multicast) that this computer is associated with.

::nettool::claim_port port ?protocol?

  Mark port as busy, optionally as either tcp (default) or udp.

::nettool::cpuinfo args

  If no arguments are given, return a key/value list describing the CPU of the present machine. Included in the matrix is info on the number of cores/processors that are available for parallel tasking, installed physical RAM, and processor family.

  The exact contents are platform specific.

  For Linux, information is drawn from /proc/cpuinfo and /proc/meminfo.

  For MacOSX, information is drawn from sysctl

  For Windows, information is draw from TWAPI.

  If arguments are given, the result with be a key/value list limited to the fields requested.

  Canonical fields for all platforms:

  cpus

    Count of CPUs/cores/execution units

  speed

    Clock speed of processor(s) in Mhz

  memory

    Installed RAM (in MB)

  vendor

    Manufacturer

::nettool::find_port startingport

  Return startingport if it is available, or the next free port after startingport. Note: Unlike ::nettool::allocate_port, this command does not claim the port.

  This command uses a built-in database of known ports to avoid returning a port which is in common use. (For example: http (80))

::nettool::hwid_list

  Return a list of hardware specific identifiers from this computer. The source and content will vary by platform.

  For MacOSX, the motherboard serial number and macids for all network devices is returned.

  For Windows, the volume serial number of C and macids for all network devices is returned.

  For Linux, macids for all network devices is returned.

::nettool::ip_list

  Return a list of IP addresses associated with this computer.

::nettool::mac_list

  Return a list of MACIDs for the network cards attached to this machine. The MACID of the primary network card is returned first.

::nettool::network_list

  Return a list of networks associated with this computer. Networks are formated with ip::nativeToPrefix.

::nettool::port_busy port

  Return true if port is claimed, false otherwise.

::nettool::release_port port ?protocol?

  Mark port as not busy, optionally as either tcp (default) or udp.

::nettool::status

  Return a key/value list describing the status of the computer. The output is designed to be comparable to the output of top for all platforms.

  Common fields include:

  load

    Processes per processing unit

  memory_total

    Total physical RAM (MB)

  memory_free

    Total physical RAM unused (MB)

::nettool::user_data_root appname

  Return a fully qualified path to a folder where appname should store it's data. The path is not created, only computed, by this command.

## Bugs, Ideas, Feedback

This document, and the package it describes, will undoubtedly contain bugs and other problems. Please report such in the category odie of the Tcllib Trackers. Please also report any ideas for enhancements you may have for either package and/or documentation.

When proposing code changes, please provide unified diffs, i.e the output of diff -u.

Note further that attachments are strongly preferred over inlined patches. Attachments can be made by going to the Edit form of the ticket immediately after its creation, and then using the left-most button in the secondary navigation bar.

## Keywords

nettool, odie

## Category

System

## Copyright

Copyright © 2015-2018 Sean Woods <yoda@etoyoc.com>