$ pwgen --capitalize --numerals --symbols --secure -1 20 10
c^u]/[%c|cM_8>|4BStn
#=[2e=~L5)Sdh)x7?CXr
8_N$a=IULQBGyVvW@3+u
*=Qz0;qc8~l2M[,KT5#@
qaYh-HR~1>N-wBRO0X"?
z/<B3[/s/yiou>5L&Y"r
p'e6<Ek1\)0Cfo/ho%B.
Dc*c;Zhl4H3r>*N{d9rQ
/4Cd1yxW1bmuo?pz<*F+
~[[+)7oBiixNd9-t7:pv
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/