$ pwgen --capitalize --numerals --symbols --secure -1 20 10
W5Z}&320eh#EpiEVToG0
yQeyFH|vF=62S73#~Y.b
iVy;2goVF'eWQ^;@L'sh
5{zj`Gm\1'~JlX0I0#BU
-Xm`t>[7!oqe\B)_@0J/
~cN>RX86{xg=ea88~lQb
;&2Y,Q:IPe;`'2_GaV(\
5w`-M^%qe\C)~1HX\z=R
rw|4(L]]gMVf0l|g9dts
t8cD,e[!dlW-o3,%=hz1
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/