Using 'jot' to generate random passwords:
jot -rcs "" 8 33 123
on some systems:
jot -r -c -s "" 8 33 123 [seed]

'8' is the length of the password (8 chars)

This will produce a random string of 8 chars from ascii char 33 to 123:
!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{

seed is the seed.  You may replace it with `jot -r 1 0 128000`