Strong password generator

Here is a random password generator (put in your ~/.bashrc):

genpasswd() {
  local l=$1
  [ "$l" == "" ] && l=20
  tr -dc A-Za-z0-9_ < /dev/urandom | head -c ${l} | xargs
}

Run it:

genpasswd 8

Here is output:

Kh5FwyTi

See original article here (item #10).

Debian Packages

Debian provides makepasswd, apg and pwgen packages which provide programs (the name is the same as the package) that can be used for this purpose. Makepasswd will generate true random passwords with an emphasis on security over pronounceability while pwgen will try to make meaningless but pronounceable passwords.

deby01:~$ apg -m 14 -x 14 -M SNCl
dob4IpOfvosOp@
TrinVop
9twagNobryiph/
cewd4om\queOph

deby01:~$ makepasswd --chars 14
w7RWMqKxjMGgfV

deby01:~$ pwgen
Aezoo3ae doo1Phoe jac6eTai die4zeaG 
Tu1nee7P JioPh4wu the8Luub xeiNga3K 
...