Usage: ./genpasswd.pl [OPTION]...
Generate a set of random passwords that match certain criteria.
-c, –charset=SET Use the specified charset
-l, –length=N Passwords must be exactly N characters long
–length=N-M Passwords must be N to M characters long, inclusive
-n, –number=NUM Generate NUM passwords (default is 20)
-r, –require=TYPES Require at least one of certain characters in password
-h, –help Display this help and exit
SET may be one of the following: typeable, alphanumeric, numeric.
TYPES is a comma-separated list of one or more of the following: upper, lower, number, symbol. Any TYPES specified that are not valid with the charset are ignored. Default is all TYPES.