$ pwgen --capitalize --numerals --symbols --secure -1 20 10
d"z&{.GKo3WdQ(:')[C5
3scIAyuZO(K_XlOmSHU{
ta;/n&f:cLN@;i=u2C@6
JMfKd[3;%L8-q@ErhXNy
0{h]x<;~j1&^w4yQ4TN3
6r<=>z2[(qpMUaxX7^ZG
6h6PM&a-a:e]e!9EYO'a
3w'6x'm[ex>9Y,zol[iX
#.0fC-NN}9Sp0-l2w-p@
`n9r&Rn<H&NMzb%p}SAp
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/