homework 1 - bash scripting

Homeworks problems for week 1

1. Self assessment quiz (10 points)

Go through the lecture 1 self-assessment quiz. Feel free to use multiple attempts.

2. Run the lab 1 and show your work (10 points)

3. Edit the bash scripts from the lab and show your work (20 points)

1. For the 01_init.sh part:
   • Task: Modify the script to create files with a different year (e.g., 2021 instead of 2020) in the file names.
   • Learning Objective: This task will help understand how to modify string literals in bash scripts.
2. For the 02_fix_filenames.sh part:
   • Task: Modify the script to rename files using a different date format (e.g., MM-DD-YYYY instead of YYYY-MM-DD).
   • Learning Objective: This task will teach your how to use the sed command for more complex pattern matching and substitution.
3. For the 03_process_data.sh part:
   • Task: Modify the script to calculate the sum of the readings in addition to the average.
   • Learning Objective: This task will help you understand how to perform arithmetic operations in bash and work with loops.
4. For the 04_geo.sh part:
   • Task: Modify the script to print a message saying “Download complete” after downloading the gene expression data file.
   • Learning Objective: This task will help you understand how to add simple print statements to provide user feedback in bash scripts.
5. For the 05_filter_geo.sh part:
   • Task: Modify the script to create a new file called filtered_results.csv that contains the filtered records, instead of displaying them on the screen.
   • Learning Objective: This task will teach you how to redirect output to a file in bash scripts.
6. For the 99_clean_all.sh part:
   • Task: Modify the script to print a message saying “Directory cleaned” after deleting all the files and removing the directory.
   • Learning Objective: This task will help you understand how to add print statements to confirm the completion of a task in bash scripts.

Quiz questions selected and edited from content generated with chatGPT

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