- Open a file in an existing Emacs server (using GUI if available):
- Open a file in console mode (without an X window):
emacsclient --no-window-system path/to/file
- Open a file in a new Emacs window:
emacsclient --create-frame path/to/file
- Evaluate a command, printing the output to
stdout, and then quit:
emacsclient --eval '(command)'
- Specify an alternative editor in case no Emacs server is running:
emacsclient --alternate-editor editor path/to/file
- Stop a running Emacs server and all its instances, asking for confirmation on unsaved files:
emacsclient --eval '(save-buffers-kill-emacs)'
emacsclient [options] files ...
This manual page documents briefly the emacsclient command. Full documentation is available in the GNU Info format; see below.
emacsclient works in conjunction with the built-in Emacs server.
You can either call emacsclient directly or let other programs run it for you when necessary. On GNU and Unix systems many programs consult the environment variable EDITOR (sometimes also VISUAL) to obtain the command used for editing. Thus, setting this environment variable to 'emacsclient' will allow these programs to use an already running Emacs for editing. Other operating systems might have their own methods for defining the default editor.
For emacsclient to work, you need an already running Emacs with a server. Within Emacs, call the functions "server-start" or "server-mode". (Your ".emacs" file can do this automatically if you add either "(server-start)" or "(server-mode 1)" to it.)
When you've finished editing the buffer, type "C-x #" ("server-edit"). This saves the file and sends a message back to the emacsclient program telling it to exit. The programs that use EDITOR wait for the "editor" (actually, emacsclient) to exit. "C-x #" also checks for other pending external requests to edit various files, and selects the next such file.
If you set the variable "server-window" to a window or a frame, "C-x #" displays the server buffer in that window or in that frame.
Most options follow the usual GNU command line syntax, with long options starting with two dashes ("-").
Go to the specified line and column. A missing column is treated as column 1. This option applies only to the next file specified.
- -a, --alternate-editor=COMMAND
If the Emacs server is not running, run the specified shell command instead. This can also be specified via the ALTERNATE_EDITOR environment variable. If the value of ALTERNATE_EDITOR is the empty string, run "emacs --daemon" to start Emacs in daemon mode, and try to connect to it.
- -c, --create-frame
Create a new frame instead of trying to use the current Emacs frame.
- -r --reuse-frame
Reuse an existing frame if one exists, otherwise create a new frame.
- -F, --frame-parameters=ALIST
Set the parameters of a newly-created frame.
- -d, --display=DISPLAY
Tell the server to display the files on the given display.
- -e, --eval
Do not visit files but instead evaluate the arguments as Emacs Lisp expressions.
- -f, --server-file=FILENAME
Use TCP configuration file FILENAME for communication. This can also be specified via the EMACS_SERVER_FILE environment variable.
- -n, --no-wait
Return immediately without waiting for you to "finish" the buffer in Emacs. If combined with --eval, this option is ignored.
- -w, --timeout=N
How long to wait, in seconds, for Emacs to respond before giving up. The default is 0, which means to wait forever.
- -nw, -t, --tty
Open a new Emacs frame on the current terminal.
- -s, --socket-name=FILENAME
Use socket named FILENAME for communication. This can also be specified via the EMACS_SOCKET_NAME environment variable.
- -V, --version
Print version information and exit.
- -H, --help
Print this usage information message and exit.
Normally, the exit status is 0. If emacsclient shuts down due to Emacs signaling an error, the exit status is 1.
The program is documented fully in Using Emacs as a Server available via the Info system.
This manual page was originally written by Stephane Bortzmeyer <firstname.lastname@example.org>, for the Debian GNU/Linux system, but is not specific to that system.
This manual page is in the public domain.