Update cheatsheets

vgrep

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# vgrep
+
+> A user friendly pager for grep.
+> See also: `ugrep`, `rg`.
+> More information: <https://github.com/vrothberg/vgrep>.
+
+- Recursively search the current directory for a pattern and cache it:
+
+`vgrep {{search_pattern}}`
+
+- Display the contents of the cache:
+
+`vgrep`
+
+- Open the "4th" match from the cache in the default editor:
+
+`vgrep --show {{4}}`
+
+- Display a context of "3" lines for each match in the cache:
+
+`vgrep --show=context{{3}}`
+
+- Display the number of matches for each directory in the tree:
+
+`vgrep --show=tree`
+
+- Display the number of matches for each file in the tree:
+
+`vgrep --show=files`
+
+- Start an interactive shell with cached matches:
+
+`vgrep --interactive`