$ pwgen --capitalize --numerals --symbols --secure -1 20 10
>yABx&',='YJpXXtI%9O
cPw5.v1#NJ3:[\aOd=?W
vv!0#B(,<tb<x=BYyF6l
qma'=UuWCLd2QR$N^hq/
25*];L\;C8ChA.b+J=@"
gE%|:c7~WHHNf%>Esu$T
D@H<nOBFYI+V;+70GW@D
nx)m*]u->=h>YDU3gn4(
Fsvqj8[n2}a5civ""L7v
YmbhSD2ag;@=QYrsB;J6
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/