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+# whatis
+
+> Display one-line descriptions from manual pages.
+
+- Display a description from a man page:
+
+`whatis {{command}}`
+
+- Don't cut the description off at the end of the line:
+
+`whatis --long {{command}}`
+
+- Search man page descriptions with a regular expression:
+
+`whatis --regex {{regular_expression}}`