Update cheatsheets

linux/aptitude

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# aptitude
+
+> Debian and Ubuntu package management utility.
+> More information: <https://manpages.debian.org/latest/aptitude/aptitude.8.html>.
+
+- Synchronize list of packages and versions available. This should be run first, before running subsequent `aptitude` commands:
+
+`aptitude update`
+
+- Install a new package and its dependencies:
+
+`aptitude install {{package}}`
+
+- Search for a package:
+
+`aptitude search {{package}}`
+
+- Search for an installed package (`?installed` is an `aptitude` search term):
+
+`aptitude search '?installed({{package}})'`
+
+- Remove a package and all packages depending on it:
+
+`aptitude remove {{package}}`
+
+- Upgrade installed packages to the newest available versions:
+
+`aptitude upgrade`
+
+- Upgrade installed packages (like `aptitude upgrade`) including removing obsolete packages and installing additional packages to meet new package dependencies:
+
+`aptitude full-upgrade`
+
+- Put an installed package on hold to prevent it from being automatically upgraded:
+
+`aptitude hold '?installed({{package}})'`