$ pwgen --capitalize --numerals --symbols --secure -1 20 10
7YJO*EnFR!=AIxzvN~HJ
@d04&vv@'JXi(=bPb:b/
p;fn?K5%w\QTX5&VJd}d
w%nK|Hpy4oox~)/|T?W?
Q-_%p;[)`Lu%.j9EQ4X`
g{@)QSR`t10EHNvvTo)m
R7I}8*RuM5gsw95$c-m`
?;\&zTLYP3@@AoI5*DYL
>M~5)|srg+R5Q6G\.Tk$
/ko+Kero?1W$6o};R!2d
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/