$ pwgen --capitalize --numerals --symbols --secure -1 20 10
H2zG;:P545\WOoaar$6+
2']Xv&PhkYtC43eMa+NT
@'5y`y>cYfTsb#J}+h6g
ihyLnW8/.qG)sM[p$|%m
G%ya6K~jAH7LjUm&&R;B
Yd;I@Snzz,U<X5167{E:
0`-\>jTHJ"p"=bfm<&vw
c<^QV3{@U%gsO:LKY"g8
Ixt;*8~J#}g?I`NPvD:I
Wz|;}v=G9uQFUV{y61E7
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/