Usage: dbmmanage [enc] dbname command [username [pw [group[,group] [comment]]]]

    where enc is  -d for crypt hashing (default except on Win32, Netware)
                  -m for MD5 hashing (default on Win32, Netware)
                  -s for SHA1 hashing
                  -p for plaintext

    command is one of: add|adduser|check|delete|import|update|view

    pw of . for update command retains the old password
    pw of - (or blank) for update command prompts for the password

    groups or comment of . (or blank) for update command retains old values
    groups or comment of - for update command clears the existing value
    groups or comment of - for add and adduser commands is the empty value