$ pwgen --capitalize --numerals --symbols --secure -1 20 10
jbeWhO|7"8QNu5wSQ4b,
583fI[vq1&,}c"aCvzqf
KGZm>[cP{tM^:R1sA5*x
B"`q^xMh#hTP<X)7X5`6
qsfMOC,0WI61LQ7j6/O3
E$\03h"c6U^feNV|OrL0
hdFo47T.D|N$\P+Jd\4s
2/?-rt'%1l6ViQ;-MmgF
{8d9dao|pX50()_H1.$*
OuGWVv.h09A:/J:)y{ne
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/