There’s a useful package in Debian/Ubuntu called pwgen, which allows you to generate random, human pronouncable (this is moot) passwords.
It works simply by running the ‘pwgen’ binary:
Teboo0sh Rahz3Jee aeWae1mn isheL9oo Ahbubo6o fie7ow7L eij3Re0i ieCheh2A
oSae0pah uGu1Co0k Pa0PhieZ riope6Ie IeC6aiYi zie4Yahx Yoh0quae yab2iCae
Ooqu2wei chel2ohG EeSh5jok hoxoZa7o He8gaale gao6EiSh Uo8loh1b Phie2gie
Ehei7ais yeicoo4Z Een1ohcu duZ9ook6 aQuu3wei YuW4gaen soh8ueCh Phohwai5
bi9bu4Li ieWah7ae Aip5Ohv0 lieM1aiG raeF6voe Fooduo9a pohqu3Da Ahn0iRio
Uwaech6U ne8Quu9b AhV3oNee zieG1thi Shai1Chu Zae0pie1 aet1geFe Ko8wi4go
It also comes with some useful options such as:
-y which adds a random character to each password
-N which allows you to specify the number of passwords generated (by default the entire terminal is filled up with passwords)
-H which allows you to generate repeatable passwords by using a file and a piece of text to seed the random number generator
You can install pwgen on Debian/Ubuntu using:
apt-get install pwgen
For a full list of options have a look at ‘man pwgen’.