ssh-add(1) on macOS
The text da07a1c3e1d7, as Mac OS X 10.4.7.x86, Mac OS X 10.4.7.ppc, Mac OS X 10.4.6.x86, Mac OS X 10.4.6.ppc, Mac OS X 10.4.5.x86, Mac OS X 10.4.5.ppc, Mac OS X 10.4.4.x86, Mac OS X 10.4.4.ppc, Mac OS X 10.4.3, Mac OS X 10.4.2, Mac OS X 10.4.1, Mac OS X 10.4 shipped it.
adds RSA or DSA identities to the authentication agent
Flags it lists
-
-D -
-L -
-X -
-c -
-d -
-e -
-l -
-s -
-t -
-x