$ pwgen --capitalize --numerals --symbols --secure -1 20 10
tXH*MWQ~X_fU@B;Eqg|4
,8uXjxqDiq.FviA0f,I$
_9Z{|uoF/=t['r2jK]6A
+2rTRC[%J{et)!c:fCy>
{t";#j'I6HVty$:rsKTs
!QE3P0^_2yUNGRau]s(!
^E4-0H7\^^C?T[|S*g6R
$3c<t5Z-yL-FwwYpyLW\
"O|Czuub\W.zBQ5kl"ST
B[\]%\%I$Gd#"jj?%_7p
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/