online pwgen secure password generator

options: pw_length: capitalize: numerals: symbols: remove: secure: ambiguous: no-vowels: num_pw: columns:
$ pwgen --capitalize --numerals --symbols --secure -1 20 10
&nhptejwSMU7jShBfpq(
+YL(Lw4Y;ej2USwZ=etN
=:CgYC]e3#t0n#b=j%Gv
;a]q)W>rJA'X=bCM#Mo5
$roVs/`iT;-%]wojn83}
@Y(%|=pqO>@,q&u2ylaO
5v(]?j+K9+?/{seIgMto
[c2%;5/=mE;;-`lH1%"s
h<>Dyy~uF2J&$oAkL:R6
PMm[:cd4"X!*,x!6$*!]
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/