Htpasswd

apache2-utils 패키지에 있다.

Usage:

        htpasswd [-cimBdpsDv] [-C cost] passwordfile username

        htpasswd -b[cmBdpsDv] [-C cost] passwordfile username password

        htpasswd -n[imBdps] [-C cost] username

        htpasswd -nb[mBdps] [-C cost] username password

-c  Create a new file.

-n  Don't update file; display results on stdout.

-b  Use the password from the command line rather than prompting for it.

-i  Read password from stdin without verification (for script usage).

-m  Force MD5 encryption of the password (default).

-B  Force bcrypt encryption of the password (very secure).

-C  Set the computing time used for the bcrypt algorithm

     (higher is more secure but slower, default: 5, valid: 4 to 31).

-d  Force CRYPT encryption of the password (8 chars max, insecure).

-s  Force SHA encryption of the password (insecure).

-p  Do not encrypt the password (plaintext, insecure).

-D  Delete the specified user.

-v  Verify password for the specified user.

On other systems than Windows and NetWare the '-p' flag will probably not work.

The SHA algorithm does not use a salt and is less secure than the MD5 algorithm.