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

tldr/openbsd/df

@@ -0,0 +1,33 @@
+---
+syntax: markdown
+tags: [tldr, openbsd]
+source: https://github.com/tldr-pages/tldr.git
+---
+# df
+
+> Display an overview of the filesystem disk space usage.
+> More information: <https://man.openbsd.org/df.1>.
+
+- Display all filesystems and their disk usage using 512-byte units:
+
+`df`
+
+- Display all filesystems and their disk usage in [h]uman-readable form (based on powers of 1024):
+
+`df -h`
+
+- Display the filesystem and its disk usage containing the given file or directory:
+
+`df {{path/to/file_or_directory}}`
+
+- Include statistics on the number of free and used [i]nodes:
+
+`df -i`
+
+- Use 1024-byte units when writing space figures:
+
+`df -k`
+
+- Display information in a [P]ortable way:
+
+`df -P`