Find a directory in the home directory that does not contain only lowercase letters, randomly select one of them, and find all files with the extension ".sh" in it. For each of these files, echo the command "source {}".
find $(find ~ -type d -name '*[!a-z]*' -not -name '*.*' | shuf | head -n 1) -name '*.sh' | xargs -I {} echo "source {}"