====== Generate good password ======
how simple it is 
<code bash>
echo `< /dev/urandom tr -dc A-Za-z0-9 | head -c 10`
</code>

Read further for complicated edition.

Usage : apg.sh 10  (generate 10 character password)
<code bash | apg.sh>
#!/bin/bash
if [ $# -lt 1 ]; then
echo "Usage : apg <lenght of password>"
else
for ((n=0;n<10;n++)); do dd if=/dev/urandom count=1 2> /dev/null | /usr/bin/gmime-uuencode -m -| sed -ne 2p | cut -c-$1; done
fi
</code>

<code bash | apg >
#!/bin/bash
if [ $# -gt 2 ]; then
echo "Usage : $0 [<Number Of Password>] [<Lenght Of Password>]"
else
if [ $1 ]; then
        itr=$1
else
	itr='10'
fi
if [ $2 ]; then
	len=$2
else
        len='15'
fi
for ((n=0;n<$itr;n++)); do dd if=/dev/urandom count=1 2> /dev/null | /usr/bin/gmimeuuencode -m -| sed -ne 2p | cut -c-$len; done
fi
</code>