Ubuntu Manpage: conmand - 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)).

       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.