Some simple Unix tasks

Collaboration

You may obtain help on this assignment from anyone you wish. You must cite any help you obtain.

Some simple Unix tasks

In this assignment, you will individually determine strategies for solving a variety of tasks in Unix.

Find good solutions to each of the following tasks. (That is, write a program or command to solve the task.) Put them in a folder with your name in unix-tasks folder in the primary class GitHub repository.

• Given a DOS-formatted text file (lines end with \r\n rather than just \n), convert it to a standard text file.
• Given a standard text file, convert all uppercase letters to lowercase.
• Given a standard text file, remove all blank spaces at the end of lines.
• Make a list of all misspelled words in a text file.
• Given a CSV file in which each line has the form
  LastName,FirstName,Assignment,NumericGrade find the the five highest grades on homework 2.
• Given an HTML file, find the URLs of all images. In case you don’t know HTML, those will typically look like <img ... src="*URL*" ...>. You might also want to address any of the following added complexities.
  • Added complexity: img can have any capitalization (img, IMG, Img, iMg, etc.)
  • Added complexity: There can be other text between the img and the src. (That text cannot include a greater than sign.)
  • Added complexity: There may be multiple image tags on the same line.
  • Added complexity: An image tag may span multiple lines.

You can make a local copy of the repository with

git clone git@github.com:grinnell-cs/csc282-2022sp.git

or

git clone https://github.com/grinnell-cs/csc282-2022sp.git

Your normal workflow should be something like the following.

• Use git pull to bring in the latest updates to the files.
• Make changes to the file.
• Use git commit FILE -m "MESSAGE" to commit your changes. (Substitute the file name and the message.)
• Use git pull again to make sure that you incorporate any chances since you’ve started working.
• If there’s a merge conflict
  • Edit the file to reserve the conflict. (I tend to look for the text HEAD.)
  • Use git add FILE
  • Then do git commit.
• Push the updated file.
  • In production mode, you should probably use a pull request instead.