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

tldr/linux/extundelete

@@ -0,0 +1,26 @@
+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# extundelete
+
+> Recover deleted files from ext3 or ext4 partitions by parsing the journal.
+> See also `date` for Unix time information and `umount` for unmounting partitions.
+> More information: <http://extundelete.sourceforge.net>.
+
+- Restore all deleted files inside partition N on device X:
+
+`sudo extundelete {{/dev/sdXN}} --restore-all`
+
+- Restore a file from a path relative to root (Do not start the path with `/`):
+
+`extundelete {{/dev/sdXN}} --restore-file {{path/to/file}}`
+
+- Restore a directory from a path relative to root (Do not start the path with `/`):
+
+`extundelete {{/dev/sdXN}} --restore-directory {{path/to/directory}}`
+
+- Restore all files deleted after January 1st, 2020 (in Unix time):
+
+`extundelete {{/dev/sdXN}} --restore-all --after {{1577840400}}`