Readings

The readings for Monday, January 18 are:

1. Files

   • Chapter 3. About files and the file system

     You can skip the About partitioning section.

2. Processes

   • Chapter 4. Processes

     You can skip 4.2. Boot process, Init and shutdown.

3. Editors:

   You should learn how to use a terminal-based text editor if you have not already. Here are the most popular ones on Linux:

   1. Nano: This text editor is the easiest to get started with, but also has the least amount of features. It is what I recommend for newcomers to Linux.

      • Using Nano
      • The Beginner's Guide to Nano
      • The Nano Text Editor

   2. Vim: This text editor has many features such as syntax highlighting, plugins, and even spell checking. That said, it has a steep learning curve due to its foreign keyboard interface.

      • CS 107 Guide to Vim
      • Vim Introduction and Tutorial
      • Interactive Vim Tutorial

   3. Emacs: This text editor also has many features (perhaps too many). In fact, Emacs is so powerful, there is saying "Emacs is an excellent operating system. All it's missing is a decent text editor". Bazinga!

      • CS 107 Guide to Emacs
      • Absolute Beginner's Guide to Emacs
      • A Tutorial Introduction to GNU Emcas

   You don't have to read all of the tutorials for each text editor (only read the ones for your weapon of choice).

Questions

In your reading01/README.md file, describe what commands you would use to accomplish the following:

1. Create a file private that is only readable by you.

2. Create a link to /afs/nd.edu/coursesp.16/cse/cse20189.01 in your home directory.

3. Determine the size of a file named BigFile.

4. Determine the size of a directory named MyFolder.

5. Given the following output of ps ux:

   pbui     24532  0.0  0.0  36432  5312 pts/4    S+   23:17   0:00 ssh xavier
   pbui     25129  0.0  0.0  90040 15076 ?        S    23:48   0:00 urxvt
   pbui     25130  0.0  0.0  16260  3872 pts/8    Ss   23:48   0:00 -bash
   pbui     25263  0.0  0.0  38504  5224 pts/8    S+   23:48   0:00 ssh student00
   pbui     25361  0.0  0.0  36700  3352 pts/3    R+   23:51   0:00 ps ux
   pbui     25363  0.0  0.0   6088  1664 pts/3    S+   23:51   0:00 tail -n 10
   pbui     25809  0.0  0.0  16260  3312 pts/7    Ss+  Jan12   0:00 -bash
   pbui     25913  0.0  0.1  99792 25788 ?        S    Jan13   0:07 urxvt
   pbui     25914  0.0  0.0  16260  3952 pts/5    Ss   Jan13   0:00 -bash
   pbui     29626  0.0  0.0 176096  4524 ?        Sl   15:46   0:00 /usr/lib/dconf/dconf-service
   

   Terminate the ssh student00 process.

6. Given the output of ps ux above, how would you terminate all of the urxvt processes in one command?

7. Determine how long a program named simulation takes to run.

8. Persistently set the default your shell's EDITOR to your weapon of choice.

Commands

In the reading01 folder, write at least three summary pages for the commands in each category:

Files and Filesystem

1. ls

2. chmod

3. stat

4. df

5. du

6. file

7. ln

8. find

Processes

1. ps

2. kill

3. top

4. time

5. nice

6. crontab

7. write

8. mesg

Feedback

If you have any questions, comments, or concerns regarding the course, please provide your feedback at the end of your response.

Submission

To submit your assignment, please commit your work to the reading01 folder in your Assignments Bitbucket repository.