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Manpages htpasswdSection: User Commands (1)Updated: May 2000 Index Return to Main Contents NAMEhtpasswd - Create and update user authentication filesSYNOPSIShtpasswd [ -c ] [ -m | -d | -s | -p ] passwdfile usernamehtpasswd -b [ -c ] [ -m | -d | -s | -p ] passwdfile username password htpasswd -n [ -m | -d | -s | -p ] username htpasswd -nb [ -m | -d | -s | -p ] username password DESCRIPTIONhtpasswd 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 apache Apache web server can be restricted to just the users listed in the files created by htpasswd. This program can only manage usernames and passwords 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 system'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 necessary to configure user authentication in apache see the Apache manual, which is part of the Apache distribution or can be found at <URL:http://httpd.apache.org/>. OPTIONS
EXIT STATUShtpasswd returns a zero status ("true") if the username and password have been successfully added or updated in the passwdfile. htpasswd returns 1 if it encounters some problem accessing files, 2 if there was a syntax problem with the command line, 3 if the password 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).EXAMPLEShtpasswd /usr/local/etc/apache/.htpasswd-users jsmith
htpasswd -c /home/doe/public_html/.htpasswd jane
htpasswd -mb /usr/web/.htpasswd-all jones Pwd4Steve
SECURITY CONSIDERATIONSWeb 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. RESTRICTIONSOn 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 ':'. SEE ALSOapache(8) and the scripts in support/SHA1 which come with the distribution.
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