Update cheatsheets

emacsclient

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# emacsclient
+
+> Open files in an existing Emacs server.
+> See also `emacs`.
+> More information: <https://www.emacswiki.org/emacs/EmacsClient>.
+
+- Open a file in an existing Emacs server (using GUI if available):
+
+`emacsclient {{path/to/file}}`
+
+- 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)'`