Servers#

Identified by socket path and socket name
May have >1 servers running of tmux at the same time.
Contain Sessions (which contain Windows, which contain Panes)

tmux initializes a server on automatically on first running (e.g. executing tmux)

class libtmux.Server(socket_name=None, socket_path=None, config_file=None, colors=None, **kwargs)[source]#

Bases: EnvironmentMixin

The tmux(1) Server [server_manual].

Server.sessions [Session, …]
- Session.windows [Window, …]
  - Window.panes [Pane, …]
    - Pane

When instantiated stores information on live, running tmux server.

Parameters:

socket_name (str, optional) –
socket_path (str, optional) –
config_file (str, optional) –
colors (str, optional) –

Examples

>>> server
Server(socket_name=libtmux_test...)

>>> server.sessions
[Session($1 ...)]

>>> server.sessions[0].windows
[Window(@1 1:..., Session($1 ...)]

>>> server.sessions[0].attached_window
Window(@1 1:..., Session($1 ...))

>>> server.sessions[0].attached_pane
Pane(%1 Window(@1 1:..., Session($1 ...)))

References

[server_manual]

CLIENTS AND SESSIONS. openbsd manpage for TMUX(1): “The tmux server manages clients, sessions, windows and panes. Clients are attached to sessions to interact with them, either when they are created with the new-session command, or later with the attach-session command. Each session has one or more windows linked into it. Windows may be linked to multiple sessions and are made up of one or more panes, each of which contains a pseudo terminal.”

https://man.openbsd.org/tmux.1#CLIENTS_AND_SESSIONS. Accessed April 1st, 2018.

child_id_attribute = 'session_id'#: Unique child ID used by TmuxRelationalObject

formatter_prefix = 'server_'#: Namespace used for TmuxMappingObject

socket_name = None#: Passthrough to [-L socket-name]

socket_path = None#: Passthrough to [-S socket-path]

config_file = None#: Passthrough to [-f file]

colors = None#: -2 or -8

is_alive()[source]#

If server alive or not.

Return type:: bool

>>> tmux = Server(socket_name="no_exist")
>>> assert not tmux.is_alive()

raise_if_dead()[source]#

Raise if server not connected.

>>> tmux = Server(socket_name="no_exist")
>>> try:
...     tmux.raise_if_dead()
... except Exception as e:
:rtype: :py:obj:`None`

… print(type(e)) <class ‘subprocess.CalledProcessError’>

cmd(*args, **kwargs)[source]#

Execute tmux command and return output.

Return type:: tmux_cmd

Examples

>>> server.cmd('display-message', 'hi')
<libtmux.common.tmux_cmd object at ...>

Return type:: common.tmux_cmd

Notes

Changed in version 0.8: Renamed from .tmux to .cmd.

property attached_sessions: List[Session]#

Return active Session objects.

Examples

>>> server.attached_sessions
[]

Return type:: list of Session

has_session(target_session, exact=True)[source]#

Return True if session exists. $ tmux has-session.

Return type:

bool

Parameters:

target_session (str) – session name
exact (bool) – match the session name exactly. tmux uses fnmatch by default. Internally prepends = to the session in $ tmux has-session. tmux 2.1 and up only.

Raises:

exc.BadSessionName –

Return type:

bool

kill_server()[source]#

$ tmux kill-server.

Return type:: None

kill_session(target_session)[source]#

Kill the tmux session with $ tmux kill-session, return self.

Return type:: Server
Parameters:: target_session (str, optional) – target_session: str. note this accepts fnmatch(3). ‘asdf’ will kill ‘asdfasd’.
Return type:: Server
Raises:: exc.BadSessionName –

switch_client(target_session)[source]#

$ tmux switch-client.

Return type:: None
Parameters:: target_session (str) – name of the session. fnmatch(3) works.
Raises:: exc.BadSessionName –

attach_session(target_session=None)[source]#

$ tmux attach-session aka alias: $ tmux attach.

Return type:: None
Parameters:: target_session (str) – name of the session. fnmatch(3) works.
Raises:: exc.BadSessionName –

new_session(session_name=None, kill_session=False, attach=False, start_directory=None, window_name=None, window_command=None, x=None, y=None, *args, **kwargs)[source]#

Return Session from $ tmux new-session.

Uses -P flag to print session info, -F for return formatting returns new Session object.

$ tmux new-session -d will create the session in the background $ tmux new-session -Ad will move to the session name if it already exists. todo: make an option to handle this.

Return type:

Session

Parameters:

session_name (str, optional) –
```
$ tmux new-session -s <session_name>
```
attach (bool, optional) –
create session in the foreground. attach=False is equivalent to:
```
$ tmux new-session -d
```
kill_session (bool, optional) – Kill current session if $ tmux has-session. Useful for testing workspaces.
start_directory (str, optional) – specifies the working directory in which the new session is created.
window_name (str, optional) –
```
$ tmux new-session -n <window_name>
```
window_command (str, optional) – execute a command on starting the session. The window will close when the command exits. NOTE: When this command exits the window will close. This feature is useful for long-running processes where the closing of the window upon completion is desired.
x ([int, str], optional) – Force the specified width instead of the tmux default for a dettached session
y ([int, str], optional) – Force the specified height instead of the tmux default for a dettached session

Return type:

Session

Raises:

exc.BadSessionName –

Examples

Sessions can be created without a session name (0.14.2+):

>>> server.new_session()
Session($2 2)

Creating them in succession will enumerate IDs (via tmux):

>>> server.new_session()
Session($3 3)

With a session_name:

>>> server.new_session(session_name='my session')
Session($4 my session)

property sessions: QueryList[Session]#

Sessions belonging server.

Can be accessed via .sessions.get() and .sessions.filter()

property windows: QueryList[Window]#

Windows belonging server.

Can be accessed via .windows.get() and .windows.filter()

property panes: QueryList[Pane]#

Panes belonging server.

Can be accessed via .panes.get() and .panes.filter()

_list_panes()[source]#

Return list of panes in dict form.

Retrieved from $ tmux(1) list-panes stdout.

The list is derived from stdout in util.tmux_cmd which wraps subprocess.Popen. :rtype: List[Dict[str, Any]]

Deprecated since version 0.16.

getenv(name)[source]#

Show environment variable $ tmux show-environment -t [session] <name>.

Return the value of a specific variable if the name is specified. :rtype: Union[str, bool, None]

New in version 0.13.

Parameters:: name (str) – the environment variable name. such as ‘PATH’.
Returns:: Value of environment variable
Return type:: str

remove_environment(name)[source]#

Remove environment variable $ tmux set-environment -r <name>.

Return type:: None
Parameters:: name (str) – the environment variable name. such as ‘PATH’.

set_environment(name, value)[source]#

Set environment $ tmux set-environment <name> <value>.

Return type:

None

Parameters:

name (str) – the environment variable name. such as ‘PATH’.
option (str) – environment value.

show_environment()[source]#

Show environment $ tmux show-environment -t [session].

Return dict of environment variables for the session. :rtype: Dict[str, Union[bool, str]]

Changed in version 0.13: Removed per-item lookups. Use libtmux.common.EnvironmentMixin.getenv().

Returns:: environmental variables in dict, if no name, or str if name entered.
Return type:: dict

unset_environment(name)[source]#

Unset environment variable $ tmux set-environment -u <name>.

Return type:: None
Parameters:: name (str) – the environment variable name. such as ‘PATH’.

_update_panes()[source]#

Update internal pane data and return self for chainability.

Return type:

Server

Returns:

Server
.. deprecated:: 0.16

get_by_id(id)[source]#

Deprecated since version 0.16.

Return type:: Optional[Session]

where(kwargs)[source]#

Deprecated since version 0.16.

Return type:: List[Session]

find_where(kwargs)[source]#

Deprecated since version 0.16.

Return type:: Optional[Session]

_list_windows()[source]#

Return list of windows in dict form.

Retrieved from $ tmux(1) list-windows stdout.

The list is derived from stdout in common.tmux_cmd which wraps subprocess.Popen. :rtype: List[Dict[str, Any]]

Deprecated since version 0.16.

_update_windows()[source]#: Update internal window data and return self for chainability. :rtype: Server

Deprecated since version 0.16.

property _sessions: List[Dict[str, Any]]#: Property / alias to return _list_sessions().

Deprecated since version 0.16.

_list_sessions()[source]#

Deprecated since version 0.16.

Return type:: List[Dict[str, Any]]

list_sessions()[source]#

Return list of Session from the tmux(1) session. :rtype: List[Session]

Deprecated since version 0.16.

Return type:: list of Session

property children: QueryList[Session]#: Was used by TmuxRelationalObject (but that’s longer used in this class)

Deprecated since version 0.16.