$ pwgen --capitalize --numerals --symbols --secure -1 20 10
_sAcJ5,CN)BH6l'asO+^
IFu(#pr0>Hx1ukPtOGZ'
<np,e?HT1`)-oL#1z4It
EU='W=^nCG]0me6@f!b{
oBflE5)XXra_PK@(<Fha
?Pzaqrx~T0^zPLR.ul*K
.r[-0EpFW#~d\lFVy7u$
0&CU(2L@~{Y-,mwxRfy:
2Mj|qdxa0ji0S=:{g[[|
#iX1}==aWyC<jEUlzlZ#
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/