$ pwgen --capitalize --numerals --symbols --secure -1 20 10
;>Iswk8^'cw{ZVEkIeRM
)9Q304$A.Va%!B!oso6a
PAB.:[\.=B3Xg2PmAnoQ
8}i4tjT+n26M4(4+3In^
67XZh}v7QoCXE\U)9\t5
DL\f\vY&FF<V9D_9qw%j
7;!MC4h]kDGO9upV:`G*
"38<p?Kh;`z,f,XVU$"X
)ALJ?'c/_W?\>j5wCQ%\
@//BGV>2h.8x~%stfs>j
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/