Update cheatsheets

tldr/linux/apt-get

@@ -7,6 +7,7 @@ source: https://github.com/tldr-pages/tldr.git
 
 > Debian and Ubuntu package management utility.
 > Search for packages using `apt-cache`.
+> It is recommended to use `apt` when used interactively in Ubuntu versions 16.04 and later.
 > More information: <https://manpages.debian.org/latest/apt/apt-get.8.html>.
 
 - Update the list of available packages and versions (it's recommended to run this before other `apt-get` commands):

tldr/linux/debuginfod-find

@@ -0,0 +1,13 @@
+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# debuginfod-find
+
+> Request debuginfo-related data.
+> More information: <https://manned.org/debuginfod-find>.
+
+- Request data based on the `build_id`:
+
+`debuginfod-find -vv debuginfo {{build_id}}`

tldr/linux/repo-remove

@@ -0,0 +1,13 @@
+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# repo-remove
+
+> Package database maintenance utility which removes packages from a local repository.
+> More information: <https://man.archlinux.org/man/repo-add>.
+
+- Remove a package from a local repository:
+
+`repo-remove {{path/to/database.db.tar.gz}} {{package}}`