       id options

              This  command  provides a means of getting, setting
              and converting user, group and process ids.  The id
              command has the following options:

              id user ?name?

              id userid ?uid?
                     Set  the  real and effective user ID to name
                     or uid, if the name (or uid)  is  valid  and
                     permissions  allow it.  If the name (or uid)
                     is not specified, the current name (or  uid)
                     is returned.

              id convert userid uid

              id convert user name
                     Convert  a user ID number to a user name, or
                     vice versa.

              id group ?name?

              id groupid ?gid?
                     Set the real and effective group ID to  name
                     or  gid,  if  the name (or gid) is valid and
                     permissions allow it.  If the group name (or
                     gid)  is  not  specified,  the current group
                     name (or gid) is returned.

              id groups

              id groupids
                     Return the current group access list of  the
                     process.   The  option  groups returns group
                     names and groupids returns id numbers.

              id convert groupid gid

              id convert group name
                     Convert a group ID number to a  group  name,
                     or vice versa.

              id effective user

              id effective userid
                     Return the effective user name, or effective
                     user ID number, respectively.

              id effective group

              id effective groupid
                     Return the effective group name,  or  effec-
                     tive group ID number, respectively.

              id effective groupids
                     Return  all  of  the  groupids the user is a
                     member of.

              id host
                     Return the hostname of the system  the  pro-
                     gram is running on.

              id process
                     Return  the  process  ID of the current pro-
                     cess.

              id process parent
                     Return the process ID of the parent  of  the
                     current process.

              id process group
                     Return  the  process group ID of the current
                     process.

              id process group set
                     Set the process group ID of the current pro-
                     cess to its process ID.

              id host
                     Returns   the  standard  host  name  of  the
                     machine the process is executing on.

                     On Windows 95/NT, only the host and  process
                     options are implemented.
