Comment/uncomment current line/selection

`Ctrl` + `↑ Shift` + `C`

All hotkeys for RStudio

Views Move focus to Console	`Ctrl` + `2`
Console Clear console	`Ctrl` + `L`
Console Move cursor to beginning of line	`Home`
Console Move cursor to end of line	`End`
Completions (Console and Source) Navigate candidates	`↑ ↓`
Console Popup command history	`Ctrl` + `↑`
Completions (Console and Source) Dismiss completion popup	`Esc`
Console Change working directory	`Ctrl` + `↑ Shift` + `H`
Source Goto File/Function	`Ctrl` + `.`
Views Move focus to Source Editor	`Ctrl` + `1`
Source New document (except on Chrome/Windows)	`Ctrl` + `↑ Shift` + `N`
Source New document (Chrome only)	`Ctrl` + `Alt` + `↑ Shift` + `N`
Source Open document	`Ctrl` + `O`
Source Save active document	`Ctrl` + `S`
Source Close active document (except on Chrome)	`Ctrl` + `W`
Source Close active document (Chrome only)	`Ctrl` + `Alt` + `W`
Source Close all open documents	`Ctrl` + `↑ Shift` + `W`
Source Compile PDF (TeX and Sweave)	`Ctrl` + `↑ Shift` + `K`
Source Insert chunk (Sweave and Knitr)	`Ctrl` + `Alt` + `I`
Source Insert code section	`Ctrl` + `↑ Shift` + `R`
Source Run current line/selection	`Ctrl` + `⤶ Enter`
Source Run current line/selection (retain cursor position)	`Alt` + `⤶ Enter`
Source Re-run previous region	`Ctrl` + `↑ Shift` + `P`
Source Run current document	`Ctrl` + `Alt` + `R`
Source Run from document beginning to current line	`Ctrl` + `Alt` + `B`
Source Run from current line to document end	`Ctrl` + `Alt` + `E`
Source Run the current function definition	`Ctrl` + `Alt` + `F`
Source Run the current code section	`Ctrl` + `Alt` + `T`
Source Run previous Sweave/Rmd code	`Ctrl` + `Alt` + `P`
Source Run the current Sweave/Rmd chunk	`Ctrl` + `Alt` + `C`
Source Run the next Sweave/Rmd chunk	`Ctrl` + `Alt` + `N`
Source Source a file	`Ctrl` + `↑ Shift` + `O`
Source Source the current document	`Ctrl` + `↑ Shift` + `S`
Source Source the current document (with echo)	`Ctrl` + `↑ Shift` + `⤶ Enter`
Source Fold Selected	`Alt` + `L`
Source Unfold Selected	`↑ Shift` + `Alt` + `L`
Source Fold All	`Alt` + `O`
Source Unfold All	`↑ Shift` + `Alt` + `O`
Source Go to line	`↑ Shift` + `Alt` + `G`
Source Jump to	`↑ Shift` + `Alt` + `J`
Source Switch to tab	`Ctrl` + `↑ Shift` + `.`
Source Previous tab	`Ctrl` + `F11`
Source Next tab	`Ctrl` + `F12`
Source First tab	`Ctrl` + `↑ Shift` + `F11`
Source Last tab	`Ctrl` + `↑ Shift` + `F12`
Source Navigate back	`Ctrl` + `F9`
Source Navigate forward	`Ctrl` + `F10`
Source Extract function from selection	`Ctrl` + `Alt` + `X`
Source Extract variable from selection	`Ctrl` + `Alt` + `V`
Source Reindent lines	`Ctrl` + `I`
Source Comment/uncomment current line/selection	`Ctrl` + `↑ Shift` + `C`
Source Reflow Comment	`Ctrl` + `↑ Shift` + `/`
Source Reformat Selection	`Ctrl` + `↑ Shift` + `A`
Source Show Diagnostics	`Ctrl` + `↑ Shift` + `Alt` + `P`
Source Move Lines Up/Down	`Alt` + `↑ ↓`
Editing (Console and Source) Select to Start/End	`↑ Shift` + `Alt` + `↑ ↓`
Source Jump to Matching Brace/Paren	`Ctrl` + `P`
Build Check Package	`Ctrl` + `↑ Shift` + `E`
Source Select to Matching Brace/Paren	`Ctrl` + `↑ Shift` + `Alt` + `E`
Source Add Cursor Above Current Cursor	`Ctrl` + `Alt` + `↑`
Source Add Cursor Below Current Cursor	`Ctrl` + `Alt` + `↓`
Source Move Active Cursor Up	`Ctrl` + `Alt` + `↑ Shift` + `↑`
Source Move Active Cursor Down	`Ctrl` + `Alt` + `↑ Shift` + `↓`
Source Find and Replace	`Ctrl` + `F`
Source (Windows) Find Next	`F3`
Source (Linux) Find Next	`Ctrl` + `G`
Source (Windows) Find Previous	`↑ Shift` + `F3`
Source (Linux) Find Previous	`Ctrl` + `↑ Shift` + `G`
Source Use Selection for Find	`Ctrl` + `F3`
Source Replace and Find	`Ctrl` + `↑ Shift` + `J`
Source Find in Files	`Ctrl` + `↑ Shift` + `F`
Source Check Spelling	`F7`
Editing (Console and Source) Undo	`Ctrl` + `Z`
Editing (Console and Source) Redo	`Ctrl` + `↑ Shift` + `Z`
Editing (Console and Source) Cut	`Ctrl` + `X`
Editing (Console and Source) Copy	`Ctrl` + `C`
Editing (Console and Source) Paste	`Ctrl` + `V`
Editing (Console and Source) Select All	`Ctrl` + `A`
Editing (Console and Source) Jump to Word	`Ctrl` + `← →`
Editing (Console and Source) Jump to Start/End	`Ctrl` + `Home`
Editing (Console and Source) Jump to Start/End	`Ctrl` + `End`
Editing (Console and Source) Jump to Start/End	`Ctrl` + `↑ ↓`
Editing (Console and Source) Delete Line	`Ctrl` + `D`
Editing (Console and Source) Select	`↑ Shift` + `← ↑ → ↓`
Editing (Console and Source) Select Word	`Ctrl` + `↑ Shift` + `← →`
Editing (Console and Source) Select to Line Start	`Alt` + `↑ Shift` + `←`
Editing (Console and Source) Select to Line End	`Alt` + `↑ Shift` + `→`
Editing (Console and Source) Select Page Up/Down	`Shift` + `Page Up / Down`
Editing (Console and Source) Select to Start/End	`Ctrl` + `↑ Shift` + `Home`
Editing (Console and Source) Select to Start/End	`Ctrl` + `↑ Shift` + `End`
Editing (Console and Source) Delete Word Left	`Ctrl` + `⬅ Backspace`
Completions (Console and Source) Accept selected candidate	`⭾ Tab`
Editing (Console and Source) Outdent	`↑ Shift` + `⭾ Tab`
Editing (Console and Source) Yank line up to cursor	`Ctrl` + `U`
Editing (Console and Source) Yank line after cursor	`Ctrl` + `K`
Editing (Console and Source) Insert currently yanked text	`Ctrl` + `Y`
Editing (Console and Source) Insert assignment operator	`Alt` + `-`
Editing (Console and Source) Insert pipe operator	`Ctrl` + `↑ Shift` + `M`
Editing (Console and Source) Show help for function at cursor	`F1`
Editing (Console and Source) Show source code for function at cursor	`F2`
Editing (Console and Source) Find usages for symbol at cursor (C++)	`Ctrl` + `Alt` + `U`
Completions (Console and Source) Attempt completion	`Ctrl` + `Space`
Git / SVN Stage/Unstage and move to next (Git)	`⤶ Enter`
Completions (Console and Source) Accept selected candidate	`→`
Views Move focus to Help	`Ctrl` + `3`
Views Show History	`Ctrl` + `4`
Views Show Files	`Ctrl` + `5`
Views Show Plots	`Ctrl` + `6`
Views Show Packages	`Ctrl` + `7`
Views Show Environment	`Ctrl` + `8`
Views Show Git/SVN	`Ctrl` + `9`
Views Show Build	`Ctrl` + `0`
Views Sync Editor & PDF Preview	`Ctrl` + `F8`
Views Show Keyboard Shortcut Reference	`Alt` + `↑ Shift` + `K`
Build Build and Reload	`Ctrl` + `↑ Shift` + `B`
Build Load All (devtools)	`Ctrl` + `↑ Shift` + `L`
Build Test Package (Desktop)	`Ctrl` + `↑ Shift` + `T`
Build Test Package (Web)	`Ctrl` + `Alt` + `F7`
Build Document Package	`Ctrl` + `↑ Shift` + `D`
Debug Toggle Breakpoint	`↑ Shift` + `F9`
Debug Execute Next Line	`F10`
Debug Step Into Function	`↑ Shift` + `F4`
Debug Finish Function/Loop	`↑ Shift` + `F6`
Debug Continue	`↑ Shift` + `F5`
Debug Stop Debugging	`↑ Shift` + `F8`
Plots Previous plot	`Ctrl` + `Alt` + `F11`
Plots Next plot	`Ctrl` + `Alt` + `F12`
Git / SVN Diff active source document	`Ctrl` + `Alt` + `D`
Git / SVN Commit changes	`Ctrl` + `Alt` + `M`
Git / SVN Scroll diff view	`Ctrl` + `↑/↓`
Git / SVN Stage/Unstage (Git)	`Space`
Session Quit Session (desktop only)	`Ctrl` + `Q`
Session Restart R Session	`Ctrl` + `↑ Shift` + `F10`