online pwgen secure password generator

$ pwgen --capitalize --numerals --symbols --secure -1 20 10

g4Hd^WJy!fM>U#IzbUoL
MpKY2Vw*;6"`!i:"X3HH
$83?~2j(aF/_HLg(rQVE
fqR}G/"Q4it2?4fhJ)-,
6T{93#W}WY(wuuWdwqT"
N&#81fm0[mau"0}>B'X(
<~]}MR8'(Y'?zd^*Uhd=
!wO?5/Qbzi?{4d!w;,yI
F;>&4'zcvPE&S|d,^r6C
":Vghszcb8oSWdC&uz&t

Usage: pwgen [ OPTIONS ] [ pw_length ] [ num_pw ]

Options supported by pwgen:
  -c or --capitalize
        Include at least one capital letter in the password
  -A or --no-capitalize
        Don't include capital letters in the password
  -n or --numerals
        Include at least one number in the password
  -0 or --no-numerals
        Don't include numbers in the password
  -y or --symbols
        Include at least one special symbol in the password
  -r <chars> or --remove-chars=<chars>
        Remove characters from the set of characters to generate passwords
  -s or --secure
        Generate completely random passwords
  -B or --ambiguous
        Don't include ambiguous characters in the password
  -h or --help
        Print a help message
  -H or --sha1=path/to/file[#seed]
        Use sha1 hash of given file as a (not so) random generator
  -C
        Print the generated passwords in columns
  -1
        Don't print the generated passwords in columns
  -v or --no-vowels
        Do not use any vowels so as to avoid accidental nasty words

https://sourceforge.net/projects/pwgen/