Random password generation
There are many reasons for needing a new password. Once you have the password you can copy it to a web browser or pipe it to passwd or some other app.
The basic command is:
( < /dev/urandom tr -dc <characters in password> |head -c${1:-<length of password>};echo;)
Examples:
( < /dev/urandom tr -dc _A-Z-a-z-0-9'!@#$%' |head -c${1:-15};echo;)
Or
( < /dev/urandom tr -dc _A-Z-a-z-0-9'!@#$%' |head -c${1:-15};echo;) | tee /tmp/$$ | passwd --stdin <USER>