$ pwgen --capitalize --numerals --symbols --secure -1 20 10
ztdQ#s.5[NR!Nbm_R%x#
g<l1n#_=\MQzdT@YN/MN
;?P~6tWt#v52bBp6KIe'
J;KyzB![0$mI(ql\P-)q
~pr},4Jvbd-|}vX1&yM:
8kGg12hYwEa^\5qVu6S\
N6#r{`uFKwCgolj~l5\C
i_mCMqg%D)xazDvY0X^.
xB6<m_X=[#odU=8'<f8J
-VSbS?9`@Z1_Kg;zU)Ke
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/