B<openssl passwd>
[B<-crypt>]
+[B<-apr1>]
[B<-salt string>]
+[B<-in file>]
+[B<-stdin>]
[B<-quiet>]
[B<-table>]
{B<password>}
=head1 DESCRIPTION
-The B<passwd> command computes the hashes of a list of passwords
-passed on the command line, or the hash of a password typed at run-time.
-Currently only the Unix standard algorithm B<crypt>
-is implemented.
+The B<passwd> command computes the hash of a password typed at
+run-time or the hash of each password in a list. The password list is
+taken from the named file for option B<-in file>, from stdin for
+option B<-stdin>, and from the command line otherwise.
+The Unix standard algorithm B<crypt> and the MD5-based B<apr1> algorithm
+are available.
=head1 OPTIONS
Use the B<crypt> algorithm (default).
+=item B<-apr1>
+
+Use the B<apr1> algorithm.
+
=item B<-salt string>
Use the specified salt.
+=item B<-in file>
+
+Read passwords from B<file>.
+
+=item B<-stdin>
+
+Read passwords from B<stdin>.
+
=item B<-quiet>
-Don't output warnings when passwords are truncated.
+Don't output warnings when passwords given at the command line are truncated.
=item B<-table>
=head1 EXAMPLE
-B<openssl passwd -salt xx password> prints B<xxj31ZMTZzkVA>.
+B<openssl passwd -crypt -salt xx password> prints B<xxj31ZMTZzkVA>.
+
+B<openssl passwd -apr1 -salt xx password> prints B<$apr1$xx$2eRrCdRwKOfJOth0w31wR.>.
=cut