lessecho(1) on FreeBSD
The text 235b5adc1e34, as FreeBSD 10.2-RELEASE, FreeBSD 10.1-RELEASE, FreeBSD 10.0-RELEASE, FreeBSD 9.3-RELEASE, FreeBSD 9.2-RELEASE shipped it.
expand metacharacters
Flags it lists
-
-a -
-cx -
-dn -
-ex -
-fn -
-mx -
-nn -
-ox -
-pn