Tips on VI
Line numbers
Show/hide line numbers
:set number/nonumber
Cut/Copy/Paste
Keys
d: delete (cut)
y: yank (copy)
p/P: paste (after/before)
Split window
Ctrl+w s
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## Filesystem Explorer
```vim
:Explore
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## Sessions
Save a session
```vim
:mksession mysessionfile
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Open a session
```vim
:source mysessionfile
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## Tabs
Open files in tabs:
```vim
vim -p file1 file2 file3
Open new file in tab:
:tabnew filename
Next/Previous tab:
:tabn/tabp