Re: automatic password generation
Daniel Martin writes:
> I'm just curious - how are you going to do this? The best way I came up
> with was: PASS=`head --bytes=16 /dev/urandom | md5sum`
Clever, but it only produces hex. I want all letters and digits.
This what I'm using:
until [ `expr "$PASSWORD" : ".*"` -ge 8 ]
PASSWORD=`head -c 100 /dev/urandom | tr -dc '[:alnum:]' | head -c 8`
> Oh and I suppose people can argue about /dev/random vs. /dev/urandom, but
> for your purposes /dev/urandom should be fine...
Right. I just need unpredictable numbers, not random ones.
> ...also note that /dev/random might cause the process to freeze
> temporarily if the entropy pool has been depleted
Inconvenient during an unattended install.
email@example.com (John Hasler)
Dancing Horse Hill