$ pwgen --capitalize --numerals --symbols --secure -1 20 10
yZeufxO2-PGnw0:Hu9_R
Z9u;FzuDYsBY0Xl1&&4_
`Fh5s7gzr[lqEU9r9z6]
/Kqv_]'S%aO?QlHp3\i:
Aj83dl@1:YnS/B1V%R2~
eeF0my4iR8:2--v>v;~>
CqytmxjWFODu5_Rv7{35
=oEtvJX*Wb,@xaYSu'6(
E+-S5h;KO<Fsl\(_ZafR
}vQ}pj~E:TC0UZ5#K4H'
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/