thtpasswd - manipulate HTTP-server password files
thtpasswd [-c] passwordfile username
Sets a user’s password in an httpd-style password file. The -c flag creates a new file.
Rob McCool. Modified 29aug97 by Jef Poskanzer to accept new password on stdin, if stdin is a pipe or file. This is necessary for use from CGI. 05 May 1998 thtpasswd(1)