Move pages under tldr, lint run.sh, update docs

tldr/phpbu

@@ -0,0 +1,25 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# phpbu
+
+> A backup utility framework for PHP.
+> More information: <https://phpbu.de>.
+
+- Run backups using the default `phpbu.xml` configuration file:
+
+`phpbu`
+
+- Run backups using a specific configuration file:
+
+`phpbu --configuration={{path/to/configuration_file.xml}}`
+
+- Only run the specified backups:
+
+`phpbu --limit={{backup_task_name}}`
+
+- Simulate the actions that would have been performed:
+
+`phpbu --simulate`