$ pwgen --capitalize --numerals --symbols --secure -1 20 10
2#E.d'EL'0P=Np{n0CDK
O`o0I(mkIq!\KmOvJ0+@
h{4&_]o\B_9)53Ml^$o1
M$jR;/a5.UN(PemEiq4#
7N5{@WSd0Y_#[&1Yh#}x
S;<@.%1|DodMs0R,Ocl7
Z/&55_U\7qf<RLD85EdN
}6<|TTh-0A_e3Aag6xjR
LF?R@Sx1c3_Lsz[^wpbE
H^,XDEVec+#~)U:z9}>d
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/