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Sep
09
2015
Create TRUE random passwords - Errata

This blog post is dedicated to “rwman os” for contacting me to suggest that I was wrong !

And indeed I was !! ( <— two exclamation marks)

So this blog post create true random passwords has some mistakes and I am here to make amens.

the correct syntax on creating random passwords is this:


$ cat /dev/urandom | tr -dc $'\x21-\x7E' | head -c 21

and after further investigation (with GNU coreutils 8.23) seems that you can use octal as well:


$ cat /dev/urandom | tr -dc '\041-\176'  | head -c 21
Tag(s): random, password