Write the Bash statements to:

1. Count the number of files ending in .java, in the current directory that have the string "pumpkin" in the file contents?
2. Do the same, including files in any sub-directory (recursively)
3. Replace every occurrence of "pumpkin" with "banana" in each of the files

Explain what each of the following Bash statements does and the overall result:

$ (date ; ps -ef | awk ‘{print $1}’ | sort | uniq | wc -l ) >> processes.log