Emacs: Use Alias for Fast M-x

In emacs, you can use alias to shorten commands. For example, make frequently used commands just 1 or 2 letters.

Examples of useful alias:

(defalias 'yes-or-no-p 'y-or-n-p) ; y or n is enough
(defalias 'list-buffers 'ibuffer) ; always use ibuffer

;; make frequently used commands short
(defalias 'qrr 'query-replace-regexp)
(defalias 'lml 'list-matching-lines)
(defalias 'dml 'delete-matching-lines)
(defalias 'dnml 'delete-non-matching-lines)
(defalias 'dtw 'delete-trailing-whitespace)
(defalias 'sl 'sort-lines)
(defalias 'rr 'reverse-region)
(defalias 'rs 'replace-string)

(defalias 'g 'grep)
(defalias 'gf 'grep-find)
(defalias 'fd 'find-dired)

(defalias 'rb 'revert-buffer)

(defalias 'sh 'shell)
(defalias 'fb 'flyspell-buffer)
(defalias 'sbc 'set-background-color)
(defalias 'rof 'recentf-open-files)
(defalias 'lcd 'list-colors-display)
(defalias 'cc 'calc)

; elisp
(defalias 'eb 'eval-buffer)
(defalias 'er 'eval-region)
(defalias 'ed 'eval-defun)
(defalias 'eis 'elisp-index-search)
(defalias 'lf 'load-file)

; major modes
(defalias 'hm 'html-mode)
(defalias 'tm 'text-mode)
(defalias 'elm 'emacs-lisp-mode)
(defalias 'om 'org-mode)
(defalias 'ssm 'shell-script-mode)

; minor modes
(defalias 'wsm 'whitespace-mode)
(defalias 'gwsm 'global-whitespace-mode)
(defalias 'vlm 'visual-line-mode)
(defalias 'ln 'global-display-line-numbers-mode)

; xah modes
(defalias 'xhm 'xah-html-mode)
(defalias 'xcm 'xah-css-mode)
(defalias 'xem 'xah-elisp-mode)
(defalias 'xjm 'xah-js-mode)

Save the above in file and name it my-alias.el, then put it in your ~/.emacs.d/ directory. Then, in your emacs init file, add:

(load "my-alias")

Note: a keybinding is still faster than M-x alias. However, alias is great for commands that you don't really use that frequently, but maybe once a day.