9. Explain what are sub-shells in shell scripting. How can sub-shells be useful. Give an example where you made use of sub-shells in assignment 3. If you did not finish assignment 3, what went wrong in your scripts, what did you learn from the experience that makes you better next time. A: -x- 10. Explain situations with 3 different command lines: one to explain using grep over sed and awk; the second explains using sed over grep and awk; and last explains using awk over grep and sed. A: -x- 11. In our ULI101 class in Winter 2022, what Linux distro did you use with a VirtualBox/vmware VM? What was the difference between using Linux with a GUI and Linux from the command line? Write the command line you used to copy your professor's notes into the VM. A: 9. Explain what are sub-shells in shell scripting. How can sub-shells be useful. Give an example where you made use of sub-shells in assignment 3. If you did not finish assignment 3, what went wrong in your scripts, what did you learn from the experience that makes you better next time. A: -x- 10. Explain situations with 3 different command lines: one to explain using grep over sed and awk; the second explains using sed over grep and awk; and last explains using awk over grep and sed. A: -x- 11. In our ULI101 class in Winter 2022, what Linux distro did you use with a VirtualBox/vmware VM? What was the difference between using Linux with a GUI and Linux from the command line? Write the command line you used to copy your professor's notes into the VM. A: