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
1D8QX?$-soW`ksP@P=E$
$LXe89&rkYh;1@nJHD#i
<x{%w+@37E>\L5'W-'jR
->lzEpPDqc~XCBfi2T"Z
dZ6jWPghpa-:Yc^Vn.c-
de1Q)DAxxQ~3G2zc:CjZ
$!tc31P~lgP)D/,k#5BN
*X;93.I#]R=Bz2Oia.7E
e&`o1RY%x'M<A|'T`y~/
gG,*+Mu"t7NR+cT=%m\!
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/