Update cheatsheets

linux/apport-bug

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# apport-bug
+
+> File a bug report on Ubuntu.
+> More information: <https://wiki.ubuntu.com/Apport>.
+
+- Report a bug about the whole system:
+
+`apport-bug`
+
+- Report a bug about a specific package:
+
+`apport-bug {{package}}`
+
+- Report a bug about a specific executable:
+
+`apport-bug {{path/to/executable}}`
+
+- Report a bug about a specific process:
+
+`apport-bug {{PID}}`