Basic Atom

Open palette Cmd + Shift + P

Open Standard Dialog Cmd + O

Save file Cmd + S

Save As File Cmd + Shift + S

Save all files Open Alt + Cmd + S

Open folder Cmd + Shift + O

Toggle tree view Cmd + \

Focus on tree view Ctrl + 0

Open fuzzy finder for search file Cmd + T or Cmd + P

Search through only the file open Cmd + B

Search through only the files which are new or have been modified since your last commit Cmd + Shift + B

Moving in Atom

Go up Ctrl + P

Go down Ctrl + N

Go right Ctrl + F

Go left Ctrl + B

Move to the beginning of word Alt + B

Move to the end of word Alt + F

Move to the first character of the current line Alt + F

Move to the end of line Ctrl + E

Move to the top of file Ctrl + ⬆️

Move to the bottom of file Ctrl + ⬇️

Move to a specific line Ctrl + G

Navigation by Symbols

Open list of symbols Cmd + R

Bookmarks

Toggle bookmark on current line Cmd + F2

Jump to the next bookmark F2

Backward to bookmark Shift + F2

List of all your project's current bookmarks Ctrl + F2

Atom selection

Select up Ctrl + Shift + P

Select down Ctrl + Shift + N

Select previous character Ctrl + Shift + B

Select next character Ctrl + Shift + F

Select to beginning of word Ctrl + Shift + B

Select to end of word Ctrl + Shift + F

Select to end of line Ctrl + Shift + E

Select to first character of line Ctrl + Shift + A

Select to top of file Cmd + Shift + ⬆️

Select to bottom of file Cmd + Shift + ⬇️

Select the entire contents of the file Cmd + A

Select the entire line Cmd + L

Select the current word Ctrl + Shift + W

Editing and Deleting Text

Join the next line to the end of the current line Cmd + J

Move the current line up or down Cmd + Ctrl + ⬆️/⬇️

Duplicate the current line Cmd + Shift + D

Upper case the current word Cmd + K Cmd + U

Lower case the current word Cmd + K Cmd + L

Transpose characters. This swaps the two characters on either side of the cursor. Ctrl + T

Re-flow a paragraph to hard-wrap Alt + Cmd + Q

Deleting and Cutting

Delete current line Ctrl+Shift+K

Delete to beginning of word Alt + H

Delete to end of word Alt+D

Delete to end of line Cmd+Delete

Cut to end of line Ctrl+K

Delete to beginning of line Cmd+Backspace

Multiple Cursors and Selections

Add a new cursor at the clicked location Cmd + Click

Add another cursor above/below the current cursor Ctrl + Shift+ ⬆️/⬇️

Select the next word in the document that is the same as the currently selected word Cmd + D

Select all words in the document that are the same as the currently selected word Cmd + Ctrl + G

Convert a multi-line selection into multiple cursors Cmd + Shift + L

Brackets

Jump to the bracket matching the one adjacent to the cursor. It jumps to the nearest enclosing bracket when there's no adjacent bracket. Ctrl + M

Select all the text inside the current brackets Cmd + Ctrl + M

Close the current XML/HTML tag Alt + Cmd + .

Toggle menu to change file encoding Ctrl + Shift + U

Find and Replace

Search within a buffer Cmd + F

Search the entire project Cmd + Shift + F

Find next Cmd + G

Folding

Fold blocks of code Alt + Cmd + [

Unfold blocks of code Alt + Cmd + ]

Fold everything Alt + Cmd + Shift + [

Unfold everything Alt + Cmd + Shift + ]

Fold at a specific indentation Cmd + K Cmd + 0-9 (number is the indentation depth)

Fold selection Alt + Cmd + Ctrl + F

Reveal file in tree view Cmd + |

Panes

Split pane horizontally or vertically Cmd + M ⬆️/⬆️/⬅️/➡️

Switch between pane Cmd + M Cmd + ⬆️/⬆️/⬅️/➡️

Close pane Cmd + W

Grammar

Open grammar selector Ctrl + Shift + L