---
name: "znol"
section: "1"
platform: "linux"
package: "zephyr-clients"
version: "3.1.2-1.1+b2"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/znol"
---

# znol(1)

notify via Zephyr upon login or logout of interesting people

## NAME

znol - notify via Zephyr upon login or logout of interesting people

## SYNOPSIS

**znol** \[ **on\|off** \] \[ **-f** *file* \] \[ **-u** *username* \] \[ **-l** \] \[ **-q** \]

## DESCRIPTION

*Znol* provides a way for you to be notified when "interesting" people log in or out.  It uses the *Zephyr(1)* Notification Service, which causes a message to appear on your screen for every person specified in a namelist (which defaults to $HOME/.anyone).  The namelist should have one login name per line.  Any line starting with \`#' is considered a comment and ignored. Anyone in the namelist who is logged in when *znol* is executed is printed to stdout.  The control arguments are as follows:

- **on\|off**

  Turns notification on or off.

- **-f**

  The namelist file is taken to be *file.* If *file* is "-", then the standard input is used instead of a file. If *file* does not exist, an error message is printed, and *znol* exits. This option may not be used in conjunction with the **-u** option.

- **-l**

  Causes *znol* to just list the people in the namelist who are currently logged in, without subscribing to the login messages.   This option may not be used in conjunction with the **-q** option.

- **-q**

  Disables printing who is currently logged in when subscribing.  This option may not be used in conjunction with the **-l** option.

- **-u**

  Instead of reading a file to specify the "interesting" users, the next argument is used as the only "interesting" user.  This option may not be used in conjunction with the **-f** option.

## EXAMPLES

```
znol
```

reads the standard namelist file, prints the locations of any users named therein which can be found on the system, and enters subscriptions for notices about those users.

```
znol -l -u foo
```

prints the location (if visible) of the user 'foo'.

## FILES

$HOME/.anyone

## SEE ALSO

anyone(SIPB), nol(SIPB), [zctl(1)](/zctl/1.md), [zephyr(1)](/zephyr/1.md), [zwgc(1)](/zwgc/1.md), [zhm(8)](/zhm/8.md), [zephyrd(8)](/zephyrd/8.md)\
 Project Athena Technical Plan Section E.4.1, \`Zephyr Notification Service'

## AUTHOR

Robert S. French (MIT-Project Athena)

## RESTRICTIONS

Copyright (c) 1987,1988 by the Massachusetts Institute of Technology. All Rights Reserved.\
 *[zephyr(1)](/zephyr/1.md)* specifies the terms and conditions for redistribution.