Join line below to the end of the current line

`Ctrl` + `J`

All hotkeys for Sublime Text

Editing Cut line	`Ctrl` + `X`
Editing Insert line after	`Ctrl` + `⤶ Enter`
Editing Insert line before	`Ctrl` + `↑ Shift` + `⤶ Enter`
Editing Move line/selection up	`Ctrl` + `↑ Shift` + `↑`
Editing Move line/selection down	`Ctrl` + `↑ Shift` + `↓`
Editing Split selection into lines	`Ctrl` + `↑ Shift` + `L`
Editing Select line - Repeat to select next lines	`Ctrl` + `L`
Editing Select word - Repeat select others occurrences	`Ctrl` + `D`
Editing Jump to closing parentheses. Repeat to jump to opening parentheses	`Ctrl` + `M`
Editing Select all contents of the current parentheses	`Ctrl` + `↑ Shift` + `M`
Editing Delete Line	`Ctrl` + `↑ Shift` + `K`
Editing Delete from cursor to end of line	`Ctrl` + `K` then `Ctrl` + `K`
Editing Delete from cursor to start of line	`Ctrl` + `K` + `⬅ Backspace`
Editing Indent current line(s)	`Ctrl` + `]`
Editing Un-indent current line(s)	`Ctrl` + `[`
Editing Duplicate line(s)	`Ctrl` + `↑ Shift` + `D`
Editing Join line below to the end of the current line	`Ctrl` + `J`
Editing Comment/un-comment current line	`Ctrl` + `/`
Editing Block comment current selection	`Ctrl` + `↑ Shift` + `/`
Editing Redo, or repeat last keyboard shortcut command	`Ctrl` + `Y`
Editing Paste and indent correctly	`Ctrl` + `↑ Shift` + `V`
Editing Select next auto-complete suggestion	`Ctrl` + `Space`
Editing soft undo; jumps to your last change before undoing change when repeated	`Ctrl` + `U`
Editing Quick Skip Next	`Ctrl` + `K` then `Ctrl` + `D`
Editing Wrap Selection in html tag	`Alt` + `↑ Shift` + `W`
Editing Close current html tag	`Alt` + `.`
Editing Column selection up	`Ctrl` + `Alt` + `↑`
Editing Column selection down	`Ctrl` + `Alt` + `↓`
Editing Column selection up	`Alt` + `↑ Shift` + `↑`
Editing Column selection down	`Alt` + `↑ Shift` + `↓`
Navigation/Goto Anywhere Quick-open files by name	`Ctrl` + `P`
Navigation/Goto Anywhere Goto symbol	`Ctrl` + `R`
Navigation/Goto Anywhere Goto word in current file	`Ctrl` + `;`
Navigation/Goto Anywhere Goto line in current file	`Ctrl` + `G`
General Command prompt	`Ctrl` + `↑ Shift` + `P`
General Toggle side bar	`Ctrl` + `K` then `Ctrl` + `B`
General Show scope in status bar	`Ctrl` + `↑ Shift` + `Alt` + `P`
Find/Replace Find	`Ctrl` + `F`
Find/Replace Replace	`Ctrl` + `H`
Find/Replace Find in files	`Ctrl` + `↑ Shift` + `F`
Find/Replace Add all occurrences of the current word to the selection	`Alt` + `F3`
Find/Replace Go from multiple selections to a single selection	`Esc`
Tabs Open last closed tab	`Ctrl` + `↑ Shift` + `T`
Tabs Cycle up through tabs	`Ctrl` + `Page Up`
Tabs Cycle down through tabs	`Ctrl` + `Page Down`
Tabs Find in files	`Ctrl` + `⭾ Tab`
Tabs Close current tab	`Ctrl` + `W`
Tabs Switch to a specific tab	`Alt` + `1` - `9`
Split window Revert view to single column	`Alt` + `↑ Shift` + `1`
Split window Split view into two columns	`Alt` + `↑ Shift` + `2`
Split window Split view into three columns	`Alt` + `↑ Shift` + `3`
Split window Split view into four columns	`Alt` + `↑ Shift` + `4`
Split window Set view to grid (4 groups)	`Alt` + `↑ Shift` + `5`
Split window Split view into two rows	`Alt` + `↑ Shift` + `8`
Split window ... to <keybs>4</keybs>: Jump to group 1-4	`Ctrl` + `1`
Split window … to <keybs>4</keybs>: Move file to specified group between 1-4	`Ctrl` + `↑ Shift` + `1`
Bookmarks Toggle bookmark	`Ctrl` + `F2`
Bookmarks Next bookmark	`F2`
Bookmarks Previous bookmark	`↑ Shift` + `F2`
Bookmarks Clear bookmarks	`Ctrl` + `↑ Shift` + `F2`
Text manipulation Transform to Uppercase	`Ctrl` + `K` then `Ctrl` + `U`
Text manipulation Transform to Lowercase	`Ctrl` + `K` then `Ctrl` + `L`