Re: single user machine, one "user" now(?) has no password (I didn't do it). [edited for clarity]

[Страхиња Радић]

Дана 26/02/21 11:47AM, Crystal Kolipe написа:
> > while :; do
> >         for i in $(dd if=/dev/random bs=4 count=1 2>/dev/null |
> >           hexdump -e '/1 "%u\n"')
> 
> Do you think that this is guaranteed to print four decimal numbers to stdout,
> one per line?
> 
> Bad assumption.  Test this:
> 
> $ echo -n '0000' | hexdump -e '/1 "%u\n"'
> 
> Hexdump replaces duplicated lines with '*' by default.

In my own alias for password generation, I use tr to filter characters
that I want, and remove visually potentially ambiguous characters:

        alias passgen="{ tr -dc A-Za-z0-9\$\#@^:\._- </dev/urandom | \
                tr -d Oo0Il1 | \
                dd bs=1 count=15 status=none; echo; }"

There's no need for hexdump(1) (or od(1), or xxd(1), etc) at all.