---
name: "conmand"
section: "8"
platform: "linux"
package: "conman"
version: "0.3.1-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/conmand"
---

# conmand(8)

ConMan daemon

## NAME

conmand - ConMan daemon

## SYNOPSIS

**conmand** \[*OPTION*\]...

## DESCRIPTION

**conmand** is the daemon responsible for managing consoles defined by its configuration file as well as listening for connections from clients.

## OPTIONS

- **-c *file***

  Specify a configuration file, overriding the default location \[/etc/conman.conf\].

- **-F**

  Run the daemon in the foreground.

- **-h**

  Display a summary of the command-line options.

- **-k**

  Send a SIGTERM to the **conmand** process associated with the specified configuration, thereby killing the daemon.  Returns 0 if the daemon was successfully signaled; otherwise, returns 1.

- **-L**

  Display license information.

- **-p *port***

  Specify the port on which **conmand** will listen for clients, overriding both the default port \[7890\] and the port specified in the configuration file.

- **-P *file***

  Specify the PID file for storing the daemon's PID, overriding the "**server** **pidfile**" directive in the configuration file.

- **-q**

  Displays the PID of the **conmand** process associated with the specified configuration if it appears active.  Returns 0 if the configuration appears active; otherwise, returns 1.

- **-r**

  Send a SIGHUP to the **conmand** process associated with the specified configuration, thereby re-opening both that daemon's log file and individual console log files.  Returns 0 if the daemon was successfully signaled; otherwise, returns 1.

- **-v**

  Enable verbose mode.

- **-V**

  Display version information.

- **-z**

  Truncate both the daemon's log file and individual console log files at start-up.

## SIGNALS

- **SIGHUP**

  Close and re-open both the daemon's log file and the individual console log files.  Conversion specifiers within filenames will be re-evaluated. This is useful for **logrotate** configurations.

- **SIGTERM**

  Terminate the daemon.

## SECURITY

Connections to the server are not authenticated, and communications between client and server are not encrypted.  Until this is addressed in a future release, the recommendation is to bind the server's listen socket to the loopback address (by specifying "**server loopback=on**" in conman.conf) and restrict access to the server host.

## NOTES

Log messages are sent to standard-error until after the configuration file has been read, at which time future messages are discarded unless either the **logfile** or **syslog** keyword has been specified (see **[conman.conf(5)](/conman.conf/5.md)**).

If the configuration file is modified while the daemon is running and a **pidfile** was not originally specified, the '**-k**' and '**-r**' options may be unable to identify the daemon process; consequently, the appropriate signal may need to be sent to the daemon manually.

The number of consoles that can be simultaneously managed is limited by the maximum number of file descriptors a process can have open.  The daemon sets its "nofile" soft limit to the maximum/hard limit.  If you are encountering "too many open files" errors, you may need to increase the "nofile" hard limit.

## AUTHOR

Chris Dunlap \<cdunlap@llnl.gov\>

## COPYRIGHT

Copyright (C) 2007-2022 Lawrence Livermore National Security, LLC.\
 Copyright (C) 2001-2007 The Regents of the University of California.

## LICENSE

ConMan is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

## SEE ALSO

[**conman**(1)](/conman/1.md), [**conman.conf**(5)](/conman.conf/5.md).

**https://dun.github.io/conman/**