$ pwgen --capitalize --numerals --symbols --secure -1 20 10
{LVYb%BXMLm3|'M1UfUw
5umx!N\Nt>4&:)Lu_)61
:8lurupFG05jYHckiyI3
-mdy`cpd`zUka}5n[15O
I_VQAEZ=zvgi7*"r*/kO
|T`^(bI4*#DAw]5E!373
u*^J29,M.|$X$jat*Vii
K"u','l0>RR8EUhNx]*Q
x@u@FtHXRrk"!r-70Vla
A*]Sa\9H#\QZ&1/o,e:R
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/