---
name: "nnslog"
section: "3tcl"
platform: "linux"
package: "tcllib"
version: "1.14-dfsg-3+deb7u1"
release: "Debian 7 (Wheezy)"
platforms: ["linux"]
url: "https://new.carta.tech/nnslog/3tcl"
---

# nnslog(3tcl)

Name service facility, Commandline Logging Client Application

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## NAME

nnslog - Name service facility, Commandline Logging Client Application

## SYNOPSIS

**nnslog** ?**-host** *host*? ?**-port** *port*?

```

```

## DESCRIPTION

Please read *Name service facility, introduction* first.

The application described by this document, **nnslog**, is a simple command line client for the nano name service facility provided by the Tcllib packages **nameserv**, and **nameserv::server**.

It essentially implements "**nns** search -continuous \*", but uses a different output formatting. Instead of continuously showing the current contents of the server in the terminal it simply logs all received add/remove events to **stdout**.

This name service facility has nothing to do with the Internet's *Domain Name System*, otherwise known as *DNS*. If the reader is looking for a package dealing with that please see either of the packages **dns** and **resolv**, both found in Tcllib too.

### USE CASES

**nnslog** was written with the following main use case in mind.

- \[1\]

  Monitoring the name service for all changes and logging them in a text terminal.

### COMMAND LINE

- **nnslog** ?**-host** *host*? ?**-port** *port*?

  The command connects to the specified name service, sets up a search for all changes and then prints all received events to stdout, with each events on its own line. The command will not exit until it is explicitly terminated by the user. It will especially survive the loss of the connection to the name service and reestablish the search and log when the connection is restored.

  The options to specify the name service will be explained later, in section **OPTIONS**.

### OPTIONS

This section describes all the options available to the user of the application

- **-host** name\|ipaddress

  If this option is not specified it defaults to **localhost**. It specifies the name or ip-address of the host the name service to talk to is running on.

- **-port** number

  If this option is not specified it defaults to **38573**. It specifies the TCP port the name service to talk to is listening on for requests.

## BUGS, IDEAS, FEEDBACK

This document, and the application it describes, will undoubtedly contain bugs and other problems. Please report such in the category *nameserv* of the *Tcllib SF Trackers* \[http://sourceforge.net/tracker/?group\_id=12883\]. Please also report any ideas for enhancements you may have for either application and/or documentation.

## SEE ALSO

nameserv(3tcl), nameserv::common(3tcl)

## KEYWORDS

application, client, name service

## CATEGORY

Networking

## COPYRIGHT

```
Copyright (c) 2008 Andreas Kupries <andreas_kupries@users.sourceforge.net>
```