-V[V]  Print version info.  If -VV is given, only the version
              information is printed.
       -d debuglevel
              Set the LDAP debugging level to debuglevel.  ldapmodrdn
              must be compiled with LDAP_DEBUG defined for this option
              to have any effect.
       -n     Show what would be done, but don't actually change
              entries.  Useful for debugging in conjunction with -v.
       -v     Use verbose mode, with many diagnostics written to
              standard output.
       -r     Remove old RDN values from the entry.  Default is to keep
              old values.
       -s newsup
              Specify a new superior entry. (I.e., move the target entry
              and make it a child of the new superior.)  This option is
              not supported in LDAPv2.
       -c     Continuous operation mode.  Errors  are  reported,  but
              ldapmodrdn will  continue  with  modifications.   The
              default is to exit after reporting an error.
       -f file
              Read the entry modification information from file instead
              of from standard input or the command-line.
       -M[M]  Enable manage DSA IT control.  -MM makes control critical.
       -x     Use simple authentication instead of SASL.
       -D binddn
              Use the Distinguished Name binddn to bind to the LDAP
              directory.  For SASL binds, the server is expected to
              ignore this value.
       -W     Prompt for simple authentication.  This is used instead of
              specifying the password on the command line.
       -w passwd
              Use passwd as the password for simple authentication.
       -y passwdfile
              Use complete contents of passwdfile as the password for
              simple authentication.
       -H ldapuri
              Specify URI(s) referring to the ldap server(s); only the
              protocol/host/port fields are allowed; a list of URI,
              separated by whitespace or commas is expected.
       -P {2|3}
              Specify the LDAP protocol version to use.
       -e [!]ext[=extparam]
       -E [!]ext[=extparam]
              Specify general extensions with -e and modrdn extensions
              with -E.  ´!´ indicates criticality.
              General extensions:
                [!]assert=<filter>    (an RFC 4515 Filter)
                !authzid=<authzid>    ("dn:<dn>" or "u:<user>")
                [!]bauthzid           (RFC 3829 authzid control)
                [!]chaining[=<resolve>[/<cont>]]
                [!]manageDSAit
                [!]noop
                ppolicy
                [!]postread[=<attrs>] (a comma-separated attribute list)
                [!]preread[=<attrs>]  (a comma-separated attribute list)
                [!]relax
                sessiontracking[=<username>]
                abandon,cancel,ignore (SIGINT sends abandon/cancel,
                or ignores response; if critical, doesn't wait for SIGINT.
                not really controls)
              Modrdn extensions:
                (none)
       -o opt[=optparam]
              Specify any ldap.conf(5) option or one of the following:
                nettimeout=<timeout>  (in seconds, or "none" or "max")
                ldif_wrap=<width>     (in columns, or "no" for no wrapping)
       -O security-properties
              Specify SASL security properties.
       -I     Enable SASL Interactive mode.  Always prompt.  Default is
              to prompt only as needed.
       -Q     Enable SASL Quiet mode.  Never prompt.
       -N     Do not use reverse DNS to canonicalize SASL host name.
       -U authcid
              Specify the authentication ID for SASL bind. The form of
              the ID depends on the actual SASL mechanism used.
       -R realm
              Specify the realm of authentication ID for SASL bind. The
              form of the realm depends on the actual SASL mechanism
              used.
       -X authzid
              Specify the requested authorization ID for SASL bind.
              authzid must be one of the following formats:
              dn:<distinguished name> or u:<username>
       -Y mech
              Specify the SASL mechanism to be used for authentication.
              If it's not specified, the program will choose the best
              mechanism the server knows.
       -Z[Z]  Issue StartTLS (Transport Layer Security) extended
              operation. If you use -ZZ, the command will require the
              operation to be successful.