There are instances wherein you want to generate random passwords for setting up credentials. There is a very simple random password generator in-built into Linux. Just run the below command.
# cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 24 | head -n24 | head -n1
Output:
[root@idm farooq.ahmed]# cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 24 | head -n24 | head -n1
gBE5LWroORn6mu3rCb3IguUx