====== Criar senhas ======
<code bash>
$ < /dev/urandom tr -dc '!@#%*?^)('_A-Z-a-z-0-9 | head -c16;echo
$ < /dev/urandom tr -dc 'a-zA-Z0-9/_\-\.\!\/\:\%\+\?=&' | head -c16;echo
$ < /dev/urandom tr -dc ['a-zA-Z0-9/_\-\.\!\/\:\%\+\?=&'] | head -c16;echo
$ < /dev/urandom tr -dc [a-zA-Z\/]['a-zA-Z0-9/_\-\.\!\/\:\%\+\?=&'] | head -c16;echo
</code>

<code bash>
echo {0..9}
echo {a..z}
echo {A..Z}
</code>

===== base64 =====
<file bash>
echo -n '123' | base64
</file>

**Ou**

<file bash>
echo -n "Enter Password: " && head -1 </dev/stdin | base64
</file>

**Decode**

<file bash>
echo -n "MTIzCg==" | base64 --decode
</file>

===== sha256sum =====
<file bash>
echo -n "Enter Password: " && head -1 </dev/stdin | tr -d '\n' | sha256sum | cut -d" " -f1
</file>

===== md5 =====
<file bash>
echo -n "Dfi7bzCXPM@f" | md5sum | tr -d '-'
</file>

===== mkpasswd =====

<file bash>
mkpasswd --method=SHA-512
</file>