$ pwgen --capitalize --numerals --symbols --secure -1 20 10
~K%3D)0P\*E[/MwCBd-8
&~)-8a#XVp,P;<-i,&?W
kvQY}e'f}Y{4-SM<|(;S
py2ehTak9e//z9xS.3ex
Ug&bcBP=]&Zt~z*pR+2/
k//.w"ap#3q1>E}?iB(Q
#0Z_E?Oi?1p\\G][Z,"n
:#R}|ql3YW?Hy4"7=+34
>-;@-/;y;9a;e#:?cM}R
\0:*did{|kE}X7KU{7,j
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/