As a network administrator, you will write a system monitoring Python script to achieve below requirements:

1. The script will run at 3am every Sat.
2. In the top of your report, we need to see the monitored system name, IP address, report date/time.
3. All software installed in the past 7 days will be listed with only their name and installation date.
4. Create a text file in /tmp directory and the file name has information of your monitored Linux system, the monitor report Year, Month and Day such as "c7host20220311.txt".
5. Save your collected information in step 3 into the file.
6. If anything went wrong, pop up a message for warning purpose