Create a symbolic link of the oldest file with a name of 10 characters or less that ends with .php, .sh, or .pl in the current directory and place it in the home directory.
ln -sv $(find . -regextype sed -regex '.*/*[a-z_]\{10\}\.\(php\|sh\|pl\)$' -printf '%T@ %p\n' | sort -n | head -n 1 | cut -d' ' -f2-) ~/