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RedHat 9 (Linux i386) - man page for htpasswd (redhat section 1)

htpasswd(1)									      htpasswd(1)

       htpasswd - Create and update user authentication files

       htpasswd [ -c ] [ -m ] passwdfile username
       htpasswd -b [ -c ] [ -m | -d | -p | -s ] passwdfile username password
       htpasswd -n [ -m | -d | -s | -p ] username
       htpasswd -nb [ -m | -d | -s | -p ] username password

       htpasswd  is used to create and update the flat-files used to store usernames and password
       for basic authentication of HTTP users.	If htpasswd cannot access a  file,  such  as  not
       being  able  to	write  to  the output file or not being able to read the file in order to
       update it, it returns an error status and makes no changes.

       Resources available from the httpd Apache web server can be restricted to just  the  users
       listed in the files created by htpasswd.  This program can only manage usernames and pass-
       words stored in a flat-file. It can encrypt and display password information  for  use  in
       other types of data stores, though.  To use a DBM database see dbmmanage.

       htpasswd encrypts passwords using either a version of MD5 modified for Apache, or the sys-
       tem's crypt() routine.  Files managed by htpasswd may contain  both  types  of  passwords;
       some  user records may have MD5-encrypted passwords while others in the same file may have
       passwords encrypted with crypt().

       This manual page only lists the command line arguments. For details of the directives nec-
       essary  to  configure user authentication in httpd see the Apache manual, which is part of
       the Apache distribution or can be found at <URL:http://www.apache.org/>.

       -b     Use batch mode; i.e., get the password from the command line rather than	prompting
	      for it. This option should be used with extreme care, since the password is clearly
	      visible on the command line.

       -c     Create the passwdfile. If passwdfile already exists, it is rewritten and truncated.
	      This option cannot be combined with the -n option.

       -n     Display the results on standard output rather than updating a file.  This is useful
	      for generating password records acceptable to Apache for inclusion in non-text data
	      stores.	This  option changes the syntax of the command line, since the passwdfile
	      argument (usually the first one) is omitted.  It cannot be  combined  with  the  -c

       -m     Use MD5 encryption for passwords. On Windows and TPF, this is the default.

       -d     Use  crypt() encryption for passwords. The default on all platforms but Windows and
	      TPF. Though possibly supported by htpasswd on all platforms, it is not supported by
	      the httpd server on Windows and TPF.

       -s     Use  SHA	encryption  for passwords. Facilitates migration from/to Netscape servers
	      using the LDAP Directory Interchange Format (ldif).

       -p     Use plaintext passwords. Though htpasswd will support creation  on  all  platforms,
	      the httpd daemon will only accept plain text passwords on Windows and TPF.

	      Name  of	the file to contain the user name and password. If -c is given, this file
	      is created if it does not already exist, or rewritten  and  truncated  if  it  does

	      The  username to create or update in passwdfile. If username does not exist in this
	      file, an entry is added. If it does exist, the password is changed.

	      The plaintext password to be encrypted and stored in the file.  Only used with  the
	      -b flag.

       htpasswd  returns  a  zero status ("true") if the username and password have been success-
       fully added or updated in the passwdfile.  htpasswd returns 1 if it encounters some  prob-
       lem accessing files, 2 if there was a syntax problem with the command line, 3 if the pass-
       word was entered interactively and the verification entry didn't match, 4 if its operation
       was interrupted, 5 if a value is too long (username, filename, password, or final computed
       record), and 6 if the username contains illegal characters (see the RESTRICTIONS section).

       htpasswd /usr/local/etc/apache/.htpasswd-users jsmith

	      Adds or modifies the password for user jsmith.  The user is prompted for the  pass-
	      word.   If  executed  on a Windows system, the password will be encrypted using the
	      modified Apache MD5 algorithm; otherwise, the  system's  crypt()	routine  will  be
	      used.  If the file does not exist, htpasswd will do nothing except return an error.

       htpasswd -c /home/doe/public_html/.htpasswd jane

	      Creates  a  new file and stores a record in it for user jane.  The user is prompted
	      for the password.  If the file exists and cannot be read, or cannot be written,  it
	      is not altered and htpasswd will display a message and return an error status.

       htpasswd -mb /usr/web/.htpasswd-all jones Pwd4Steve

	      Encrypts	the  password  from the command line (Pwd4Steve) using the MD5 algorithm,
	      and stores it in the specified file.

       Web password files such as those managed by htpasswd should not be within the Web server's
       URI space -- that is, they should not be fetchable with a browser.

       The  use  of  the -b option is discouraged, since when it is used the unencrypted password
       appears on the command line.

       On the Windows and MPE platforms, passwords encrypted with htpasswd are limited to no more
       than 255 characters in length.  Longer passwords will be truncated to 255 characters.

       The MD5 algorithm used by htpasswd is specific to the Apache software; passwords encrypted
       using it will not be usable with other Web servers.

       Usernames are limited to 255 bytes and may not include the character ':'.

       httpd(8) and the scripts in support/SHA1 which come with the distribution.

					     May 2000				      htpasswd(1)

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