[pass] Provide symbol set as command line argument

[Brian Candler]

On 09/11/2016 19:32, Kevin Cox wrote:
> You do have a bug though. You shouldn't use head because then if you 
> happen to draw 10 newlines before the characters you need your 
> generated password will be shorter then you expected. Try the following.

Alternatively:

dd if=/dev/urandom bs=1 count=12 | ...

I tend to just pipe to base64; this gives a longer password with few or 
no symbols. 12 random bytes = 96 bits of entropy, and base64 gives a 
16-character password.