add vim cheatsheet

cheat/vim.md

@@ -16,7 +16,7 @@ And type:
 
 Finally type `:wq` to save and close the file.
 
-### Indent the whole file in VIM ([src](https://stackoverflow.com/questions/506075/how-do-i-fix-the-indentation-of-an-entire-file-in-vi))
+### Indent the whole file in VIM ([Source](https://stackoverflow.com/questions/506075/how-do-i-fix-the-indentation-of-an-entire-file-in-vi))
 
 `gg=G`
 
@@ -27,3 +27,29 @@ v       - selects range of text
 ctrl-v  - selects columns
 gv      - reselect block
 ```
+
+### Basics
+* `:open FILE_PATH` : open a file
+
+### Executing commands (shell)
+
+use current buffer as input of a shell command
+* `:%! grep hello` to search for all lines containing hello in the current buffer ([Source](https://superuser.com/a/1507327/453117))
+
+### Window management
+* `:tabe filename` to open a file in a new tab ([Source](https://unix.stackexchange.com/a/27587/220566))
+* `gT` and `gt` can be used to switch between tabs ([Source](https://unix.stackexchange.com/a/27587/220566))
+* `vim -p file1 file2` to open files in tabs ([Source](https://unix.stackexchange.com/questions/27586/how-can-i-edit-multiple-files-in-vim#comment37261_27587))
+* `:sp [file]` or `Ctrl+W, s` : split the window (horizontally) ([Source](https://unix.stackexchange.com/a/27616/220566))
+* `:vsp [file]` or `Ctrl+W, v` : split the window (vertically) ([Source](https://unix.stackexchange.com/a/27616/220566))
+* `Ctrl+w, l` : move to the right window from the left ([Source](https://linuxhint.com/how-to-use-vim-split-screen/))
+* `Ctrl+w, h` : move to the left window again ([Source](https://linuxhint.com/how-to-use-vim-split-screen/))
+* To find more commands: [How To Use VIM Split Screen](https://linuxhint.com/how-to-use-vim-split-screen/)
+
+### Buffer management
+* `:bf` go to first file
+* `:bn` go to next file
+* `:bp` go to previous file
+* `:bl` go to last file
+* `:bw` close file
+* `:help buffer` to find more information