MOSH
Section: User Commands (1)
Updated: October 2012
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NAME
mosh-server - server-side helper for mosh
SYNOPSIS
mosh-server
new
[-s]
[-v]
[-i IP]
[-p PORT[:PORT2]]
[-c COLORS]
[-- command...]
DESCRIPTION
mosh-server is a helper program for the
mosh(1)
remote terminal application.
mosh-server binds to a high UDP port and chooses an encryption
key to protect the session. It prints both on standard output,
detaches from the terminal, and waits for the mosh-client to
establish a connection. It will exit if no client has contacted
it within 60 seconds.
By default, mosh-server binds to a port between 60000 and
61000 and executes the user's login shell.
On platforms with utempter, mosh-server maintains an entry
in the
utmp(5)
file to indicate its process ID, whether the session is connected,
and the client's current IP address.
mosh-server exits when the client terminates the connection.
OPTIONS
The argument "new" must be first on the command line to use
command-line options.
- -s
-
bind to the local interface used for an incoming SSH connection, given
in the SSH_CONNECTION environment variable (for multihomed
hosts)
- -v
-
Print some debugging information even after detaching. More instances
of this flag will result in more debugging information.
- -i IP
-
IP address of the local interface to bind (for multihomed hosts)
- -p PORT[:PORT2]
-
UDP port number or port-range to bind. -p 0 will let the
operating system pick an available UDP port.
- -c COLORS
-
Number of colors to advertise to applications through TERM (e.g. 8, 256)
- -l NAME=VALUE
-
Locale-related environment variable to try as part of a fallback
environment, if the startup environment does not specify a character
set of UTF-8.
ENVIRONMENT VARIABLES
These variables allow server-side configuration of Mosh's behavior.
They may be set by administrators in system login/rc files,
/etc/login.conf, or similar mechanisms, or users in their shell's
login/rc files. mosh-server passes these variables to the login
session and shell that it starts, but changing them there will have no
effect.
- MOSH_SERVER_NETWORK_TMOUT
-
If this variable is set to a positive integer number, it specifies how
long (in seconds) mosh-server will wait to receive an update from the
client before exiting. Since mosh is very useful for mobile
clients with intermittent operation and connectivity, we suggest
setting this variable to a high value, such as 604800 (one week) or
2592000 (30 days). Otherwise, mosh-server will wait
indefinitely for a client to reappear. This variable is somewhat
similar to the TMOUT variable found in many Bourne shells.
However, it is not a login-session inactivity timeout; it only applies
to network connectivity.
- MOSH_SERVER_SIGNAL_TMOUT
-
If this variable is set to a positive integer number, it specifies how
long (in seconds) mosh-server will ignore SIGUSR1 while waiting
to receive an update from the client. Otherwise, SIGUSR1 will
always terminate mosh-server. Users and administrators may
implement scripts to clean up disconnected Mosh sessions. With this
variable set, a user or administrator can issue
$ pkill -SIGUSR1 mosh-server
to kill disconnected sessions without killing connected login
sessions.
EXAMPLE
$ mosh-server
MOSH CONNECT 60001 UAkFedSsVJs2LfMeKyQB5g
mosh-server (mosh 1.1)
[...] (copyright notice omitted)
[mosh-server detached, pid = 20443]
SEE ALSO
mosh(1),
mosh-client(1).
Project home page:
https://mosh.org
AUTHOR
mosh was written by Keith Winstein <mosh-devel@mit.edu>.
BUGS
Please report bugs to mosh-devel@mit.edu. Users may also subscribe
to the
mosh-users@mit.edu
mailing list, at
http://mailman.mit.edu/mailman/listinfo/mosh-users
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- OPTIONS
-
- ENVIRONMENT VARIABLES
-
- EXAMPLE
-
- SEE ALSO
-
- AUTHOR
-
- BUGS
-
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