tip-of-the-week: shell_scripts/compile_gnuplot/compile_gnuplot.sh (modified); shell_scripts/hello_user/hello_user_premium.sh (modified); shell_scripts/hello_user/hello_user_regular.sh (modified); shell_scripts/hello_user/hello_user_special.sh (modified); shell_scripts/input_validation/input_validation.sh (modified); shell_scripts/list_file_sizes/list_file_sizes.sh (modified); shell_scripts/list_ip_address/list_ip_address.sh (modified); shell_scripts/login_counter/login_counter.sh (modified); shell_scripts/remote_server_status/.foolinggit (new file); shell_scripts/remote_server_status/remote_server_status.sh (new file); shell_scripts/replace_space_with_underscore/replace_space_with_underscore.sh (modified); shell_scripts/smart_extract/smart_extract.sh (modified); shell_scripts/sum_numbers/sum_numbers.sh (modified); shell_scripts/sum_numbers/sum_numbers_getopts.sh (modified); shell_scripts/word_count/word_count.sh (modified)