rar: add page (#3414)

pages/common/rar.md

@@ -0,0 +1,27 @@
+# rar
+
+> The RAR archiver. Supports multi-volume archives that can be optionally self-extracting.
+
+- Archive 1 or more files:
+
+`rar a {{path/to/archive_name.rar}} {{path/to/file1}} {{path/to/file2}} {{path/to/file3}}`
+
+- Archive a directory:
+
+`rar a {{path/to/archive_name.rar}} {{path/to/directory}}`
+
+- Split the archive into parts of equal size (50M):
+
+`rar a -v50M -R {{path/to/archive_name.rar}} {{path/to/file_or_directory}}`
+
+- Password protect the resulting archive:
+
+`rar a -p{{password}} {{path/to/archive_name.rar}} {{path/to/file_or_directory}}`
+
+- Encrypt file data and headers with password:
+
+`rar a -hp{{password}} {{path/to/archive_name.rar}} {{path/to/file_or_directory}}`
+
+- Use a specific compression level (0-5):
+
+`rar a -m{{compression_level}} {{path/to/archive_name.rar}} {{path/to/file_or_directory}}`