Update cheatsheets

linux/apt-cache

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# apt-cache
+
+> Debian and Ubuntu package query tool.
+> More information: <https://manpages.debian.org/latest/apt/apt-cache.8.html>.
+
+- Search for a package in your current sources:
+
+`apt-cache search {{query}}`
+
+- Show information about a package:
+
+`apt-cache show {{package}}`
+
+- Show whether a package is installed and up to date:
+
+`apt-cache policy {{package}}`
+
+- Show dependencies for a package:
+
+`apt-cache depends {{package}}`
+
+- Show packages that depend on a particular package:
+
+`apt-cache rdepends {{package}}`