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1. .tasks contains the lines below. Which lines are left after running tt remove "lab" if the remove action uses sed -i "/$2/d" "$HOME/.tasks", and why?

   Submit lab report
   Study for lab quiz
   Buy groceries
   

2. A student runs grep -E "\d{3}$" access.log to find status codes, but gets no output. Why, and what is one way to fix it?

3. Given the lines below from access.log, how many lines will grep -E "13:2[0-9]" access.log output, and why?

   192.168.1.10 - [10/Oct/2024:13:21:05] "GET /contact HTTP/1.1" 200
   10.0.21.4 - [10/Oct/2024:13:29:59] "POST /cart HTTP/1.1" 404
   172.16.5.22 - [10/Oct/2024:13:30:12] "GET /faq HTTP/1.1" 200
   192.10.1.7 - [10/Oct/2024:13:45:33] "GET /checkout HTTP/1.1" 500
   

4. A student runs the command below on the line <li>Apples</li><li>Pears</li> and gets <li>Apples as output. Why was <li>Pears removed too?

   sed 's/<\/.*>//g' sedfile.md
   

5. A student runs sed 's/Batches/Matches/g' sedfile.md and sees Matches in the output, but cat sedfile.md still shows Batches. Why?

6. Given the lines below from sales.txt, what will the following command print?

   awk -F',' '$5 >= 100 {print $2}' sales.txt
   

   2024-01-15,Laptop,Electronics,3,899.99,2699.97
   2024-02-03,Blender,Kitchen,5,49.99,249.95
   2024-02-10,TV,Electronics,2,450.00,900.00
   

7. What does the following snippet from .bashrc do?

   if [ -f ~/.bash_aliases ]; then
    . ~/.bash_aliases
   fi
   

8. Given the getopts line below, a user runs bash dotinstall -a 'alias ls="ls -lah"'. Why is $OPTARG empty when the a) case runs?

   while getopts "hsdar" opt; do
   

9. .bash_aliases contains the two aliases below. A user runs bash dotinstall -r ls, which runs the sed command shown. What is the bug?

   alias ls="ls -lah"
   alias lsb="lsblk -f"
   

   sed -i "/alias $OPTARG/d" ~/.bash_aliases
   

10. Given the git log --oneline output below for the dotinstall script, why would this commit history not meet the commit requirement?
    Note: git log --oneline shows the commit ID followed by the commit message

    c7d8e9f Lab06 done
    e4f5a6b stuff
    a1b2c3d update