$ pwgen --capitalize --numerals --symbols --secure -1 20 10
'i,gmX"xdyxZEP*"N3AH
{R17)cI'95)#r>8%8u^r
We=*s*Z88vOWlaL+>f2B
ca^#T*Wef4Zm&7Nx&NbZ
@qJ~wpSOovL~,1R7'z&$
84jDUD!rET)-*(mt>^j"
vq:6?@9_JRntK5Nb2Ud~
-#4Sa0H]&jD`{@o57<3l
.h<Fa$.78-F_>R{2T>|T
wmu/L8$qI\V7o(<`.AgX
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/