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Linux 2.6 - man page for dbmmanage (linux section 1)

DBMMANAGE(1)				    dbmmanage				     DBMMANAGE(1)

       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  cre-
       ated  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 nec-
       essary  to  configure  user authentication in httpd see the httpd manual, which is part of
       the Apache distribution or can be found at http://httpd.apache.org/.

	      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,  mailad-
	      dress 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. dbm-
	      manage 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  file-
	      name. 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. Unfortu-
       nately, 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 @Any-
       DBM::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.

Apache HTTP Server			    2004-12-10				     DBMMANAGE(1)

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