$ pwgen --capitalize --numerals --symbols --secure -1 20 10
a_G|a57^xJ?j4k`pfc3N
WC,oFdG(}xSDHzEK-3*G
w<jewSD7C2S`0}IAVq;G
<C{r1!Td<^1s5bx5*/oG
"CyZ0pE5jx6EOq7l-x.q
,p&^:WfmnK?Hd.0nd%]x
`IWnQA%f3O/38=b5tHUD
(>=OSb*/eXG!1#J?bwgM
K"!]?5[xhSar,Lr'nx78
ub~BmRoDQ`@8r5:(^(B0
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/