1. Write a Linux shell script that finds all files on /home that contain a given specific text string in the body of the file, and changes the permissions of each such file such that only Alice_ has read and execute permissions. Note that this means no one else (except Alice_ and root) has any other permissions. Additional requirements: As with other assignments, ensure that is replaced by your actual full name (e.g., this course's TA would use "Isratlui"). Ensure that the text string your script will search for is supplied at the script's command line. Note that your script should handle any error conditions by printing out a descriptive error message to the shell and then exiting. Submit your script with the filename _restrictfiles.sh.