Provided by: apache2-utils_2.2.22-1ubuntu1_amd64 bug


       dbmmanage - Manage user authentication files in DBM format


       dbmmanage  [  encoding  ]  filename add|adduser|check|delete|update username [ encpasswd [
       group[,group...] [ comment ] ] ]

       dbmmanage filename view [ username ]

       dbmmanage filename import


       dbmmanage is used to create and update the DBM format files used to  store  usernames  and
       password  for  basic  authentication  of HTTP users via mod_authn_dbm. Resources available
       from the Apache HTTP server can be restricted to  just  the  users  listed  in  the  files
       created by dbmmanage. This program can only be used when the usernames are stored in a DBM
       file. To use a flat-file database see htpasswd.

       This manual page only lists the command line arguments.  For  details  of  the  directives
       necessary to configure user authentication in httpd see the httpd manual, which is part of
       the Apache distribution or can be found at


              The filename of the DBM format file. Usually without the extension  .db,  .pag,  or

              The  user  for  which  the operations are performed. The username may not contain a
              colon (:).

              This is the already encrypted password to use for the update and add commands.  You
              may  use a hyphen (-) if you want to get prompted for the password, but fill in the
              fields afterwards. Additionally when using the update command, a period  (.)  keeps
              the original password untouched.

       group  A  group, which the user is member of. A groupname may not contain a colon (:). You
              may use a hyphen (-) if you don't want to assign the user to a group, but  fill  in
              the  comment  field. Additionally when using the update command, a period (.) keeps
              the original groups untouched.

              This is the  place  for  your  opaque  comments  about  the  user,  like  realname,
              mailaddress or such things. The server will ignore this field.

       -d     crypt encryption (default, except on Win32, Netware)

       -m     MD5 encryption (default on Win32, Netware)

       -s     SHA1 encryption

       -p     plaintext (not recommended)

       add    Adds  an  entry  for  username  to filename using the encrypted password encpasswd.
              dbmmanage passwords.dat add rbowen foKntnEF3KSXA

              Asks for a password and then adds an entry  for  username  to  filename.  dbmmanage
              passwords.dat adduser krietz

       check  Asks for a password and then checks if username is in filename and if it's password
              matches the specified one. dbmmanage passwords.dat check rbowen

       delete Deletes the username entry from filename. dbmmanage passwords.dat delete rbowen

       import Reads username:password entries  (one  per  line)  from  STDIN  and  adds  them  to
              filename. The passwords already have to be crypted.

       update Same  as  the adduser command, except that it makes sure username already exists in
              filename. dbmmanage passwords.dat update rbowen

       view   Just displays the contents of the DBM file. If you specify a username, it  displays
              the particular record only. dbmmanage passwords.dat view


       One  should  be  aware that there are a number of different DBM file formats in existence,
       and with all likelihood, libraries for more than one format may exist on your system.  The
       three  primary  examples  are  SDBM,  NDBM,  the  GNU  project's  GDBM, and Berkeley DB 2.
       Unfortunately, all these libraries use different file formats, and you must make sure that
       the  file  format  used  by  filename  is  the  same format that dbmmanage expects to see.
       dbmmanage currently has no way of determining what type of DBM file it is looking  at.  If
       used  against  the wrong format, will simply return nothing, or may create a different DBM
       file with a different name, or at  worst,  it  may  corrupt  the  DBM  file  if  you  were
       attempting to write to it.

       dbmmanage has a list of DBM format preferences, defined by the @AnyDBM::ISA array near the
       beginning of the program. Since we prefer the Berkeley DB 2  file  format,  the  order  in
       which  dbmmanage will look for system libraries is Berkeley DB 2, then NDBM, then GDBM and
       then SDBM. The first library found will be the library dbmmanage will attempt to  use  for
       all  DBM  file  transactions.  This  ordering  is  slightly  different  than  the standard
       @AnyDBM::ISA ordering in Perl, as well as the ordering used by the simple  dbmopen()  call
       in Perl, so if you use any other utilities to manage your DBM files, they must also follow
       this preference ordering. Similar care must be taken if using programs in other languages,
       like C, to access these files.

       One  can usually use the file program supplied with most Unix systems to see what format a
       DBM file is in.