$ pwgen --capitalize --numerals --symbols --secure -1 20 10
cov)IHv.2#}p`7(g@xpp
Z0og4*l;'Tj9ox!I'0B%
4GfKF#>.eViKOB6S!=x!
LX'8Q&2oSyF9/\q].0:/
wMC&YY`GLlooI.V9Oau|
x7v-i-HzZ=QEHo[zPv=K
(];utR7te7&'b~%n:|+y
`.zo;DKg+_wz&)&BUT1o
e5Qdp?9][7G0Rw5tT^<i
U3xopuiI-fJXBg:5'0FJ
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/