$ pwgen --capitalize --numerals --symbols --secure -1 20 10
|ALCROlV{Z2MJCq:07]2
94QM\yG@03\$lIw8')\>
+,U0m4}|g$+7k?Ar7~^E
Yi%t[rkZ$ErT:i|%a5m:
]+5<.eZDJ27=Hl66R"]|
/';S4/\;":,:=<EU]vX}
?vieH%`)2z)lSfC:R_IB
L0?fy5HI.1[%JMVwuf<|
c=0'HE0jG\g\9$(?P1AY
~vLY,&x0hWvw{{~#W9|W
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/