435 lines
19 KiB
Org Mode
435 lines
19 KiB
Org Mode
* 2020-06-17
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*** Python #11:
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**** DONE Lecture content
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CLOSED: [2020-06-17 수 22:24]
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- Same structure as "Python #2"
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- Exercise 44
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**** Lecture material
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- Available on https://cloud.ungleich.ch/s/435FyfrQyEq6oF3
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* 2020-06-15
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*** DONE Python #10:
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CLOSED: [2020-06-15 월 23:55]
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**** Lecture content
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- Same structure as "Python #2"
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- Exercise 43
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**** Lecture material
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- Available on https://cloud.ungleich.ch/s/435FyfrQyEq6oF3
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* 2020-06-12
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*** Python #9:
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**** DONE Lecture content
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CLOSED: [2020-06-12 금 22:43]
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- Same structure as "Python #2"
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- Exercise 42
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- Review all previous exercises, ensure you understand them
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**** Lecture material
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- Available on https://cloud.ungleich.ch/s/435FyfrQyEq6oF3
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* 2020-06-10
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*** Python #8:
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**** DONE Lecture content
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CLOSED: [2020-06-11 목 00:00]
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- Same structure as "Python #2"
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- Exercises 40-41
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**** Lecture material
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- Available on https://cloud.ungleich.ch/s/435FyfrQyEq6oF3
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* 2020-06-08
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*** Python #7:
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**** DONE Lecture content
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CLOSED: [2020-06-08 월 22:49]
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- Same structure as "Python #2"
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- Exercises 37-39
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**** Lecture material
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- Available on https://cloud.ungleich.ch/s/435FyfrQyEq6oF3
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* 2020-06-01
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*** Python applying learnings from 1..6
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**** DONE Lecture notes
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CLOSED: [2020-06-02 화 11:21]
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- Previous topics covered:
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- Printing
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- Formatting
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- Variables
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- Escape Sequences
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- Inputting text
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- Reading arguments / using argv
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- Reading files
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- Defining methods
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- Boolean logic
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- Branching using if/else/elif
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- Loops: for/while
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- Today we write a calculator that saves results in a file in python
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- How it works in general
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You read the input until you read a line that only contains a
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"q". Every input line consists of numbers separated by a
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space. For instance "4 5 9". You will need to .split() the
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input.
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- Steps
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- Create a python script named "calc.py"
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- It takes 1 command line argument (argv), which is the filename
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- We will store the calculations *and* results in this file
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- Create a method named "input_and_calculate_one_line"
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- It does not have any arguments
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- It reads one line via *input*
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- It splits the input (let's say "4 5 9" => [ "4", "5", "9") ])
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- It calculates the result (f.i. 4+5+9 = 18) and stores it in
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a variable (use *sum* over the *list*)
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- It returns a string of the format "4 + 5 + 9 = 18"
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- If the line only contains a "q" it return "" (an empty string)
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- Create a method named "editor" that takes a filename as an argument
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- It opens the file for writing
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- It uses input_and_calculate_one_line in a while loop
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- while the return result is not "", we append the string to
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the file
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- When the return result is "", the function exits
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* 2020-05-29
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*** Python #6:
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**** DONE Lecture content
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CLOSED: [2020-05-29 금 23:48]
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- Same structure as "Python #2"
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- Exercises 32-36
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**** Lecture material
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- Available on https://cloud.ungleich.ch/s/435FyfrQyEq6oF3
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* 2020-05-27
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*** Python #5:
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**** DONE Lecture content
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CLOSED: [2020-05-27 수 22:30]
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- Same structure as "Python #2"
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- Exercises 27-31
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**** Lecture material
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- Available on https://cloud.ungleich.ch/s/435FyfrQyEq6oF3
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* 2020-05-25
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*** Python #4:
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**** DONE Lecture content
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CLOSED: [2020-05-27 수 22:41]
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- Same structure as "Python #2"
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- Exercises 23-26
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**** Lecture material
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- Available on https://cloud.ungleich.ch/s/435FyfrQyEq6oF3
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* 2020-05-22
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**** DONE Lecture content
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CLOSED: [2020-05-23 토 00:21]
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- Same structure as "Python #2"
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- Exercises 15-22
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**** Lecture material
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- Available on https://cloud.ungleich.ch/s/435FyfrQyEq6oF3
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* 2020-05-20
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*** Python #2:
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**** DONE Lecture content
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CLOSED: [2020-05-20 수 22:47]
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- Read thoroughly & do exercises 8 to 14
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- Focus on understanding
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- You don't have to type everything
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- But you should ensure you understand everything
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- Commit all source code to ~/ungleich-learning-circle/USERNAME/python-the-hard-way
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- Write down notes / what you learned in the *python.org* file
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- Notify your fellow students when you solved something
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- "I just solved exercise 4!"
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**** Lecture material
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- Available on https://cloud.ungleich.ch/s/435FyfrQyEq6oF3
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* 2020-05-15
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*** Python #1:
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**** Lecture notes
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- Ensure that you have python3 (at least 3.6) installed
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- Use emacs for editing source files
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- Commit all source code to ~/ungleich-learning-circle/USERNAME/python-the-hard-way
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**** DONE Lecture content
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CLOSED: [2020-05-19 화 23:47]
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- Read thoroughly & do exercise 0 to 7
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- Commit your source code in git
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- Commit every time you have a task done
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- Make a new commit in git each time you finish (part of) a task
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- Do all exercises
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- Notify your fellow students when you solved something
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- Ask help to other students when you are stuck (but try to solve
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on your own before)
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**** Lecture material
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- Available on https://cloud.ungleich.ch/s/435FyfrQyEq6oF3
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* 2020-05-15
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*** cdist #6: Glueing it together
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**** Lecture content
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***** Objective
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- Apply learnings from the previous cdist sessions
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***** DONE Steps 1: *__all_in_one* (1.25h)
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CLOSED: [2020-05-15 금 23:16]
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- Create a new type named *__all_in_one*
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- Decide yourself whether it is a singleton or not
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- Reason why in your cdist.org file
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- It should work on alpine, debian and fedora
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- It accepts the following parameters:
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- *--with-x* (boolean)
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- *--extra-packages* (optional multiple)
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- On Alpine, it should install netcat-openbsd and tshark
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- On Debian, it should install netcat tshark
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- On Fedora, it should install nmap-ncat wireshark-cli
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- On all operating systems install socat sipcalc sudo
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- If the detected operating system is neither
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Alpine/Debian/Fedora, output an error message and abort the
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manifest with exit code 1
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- Additionally install all packages specified by the *--extra-packages* parameter
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***** TODO Steps 2: *__firewall* (1.25h)
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- Create a new type *__my_firewall*
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- Add a *type explorer* to find out whether nft is present on
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the target system
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- Add a required parameter named *file*
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- If the type explorer does not detect nft on the target system,
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abort with an error message
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- Deploy the specified file to */etc/my-nftables*
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- Add a *type explorer* that reads the current nft rules
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- If the rules are different on the target host, apply the new
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ruleset by generating code in *gencode-remote*
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- If the filename specified by the *file* parameter is *-* (the
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minus sign), then the type should read from *stdin*
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***** TODO Step 3: manifest (0.5h)
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- Create a new manifest in the folder that contains the initial manifest
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- Name the new manifest *firewall*
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- Source the *firewall* manifest in the *initial* manifest
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- In the *firewall* manifest, match on *localhost*
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- Install nftables
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- Use the *__firewall* type
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- Use correct *require* parameter to ensure that nftables is
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installed before the *__firewall* type is run
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* 2020-05-13
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*** cdist #5: Generating Code & Exploring
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**** Lecture content
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***** Objective
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- Understand how to *generate code* and when to use it
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- Exploring explorers
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***** DONE Code generation steps
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CLOSED: [2020-05-14 목 00:54]
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- Modify the previously created type *__my_nginx_site*
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- Read about cdist messaging
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- If there was a change in the nginx configuration file, reload nginx
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***** DONE Explorer steps
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CLOSED: [2020-05-14 목 00:54]
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- Modify the *__my_nginx_site* type to use the *os explorer*
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- Adjust your type to work on Alpine Linux and Debian (or two
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other Linux distributions of your choice)
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- Set the nginx configuration directory accordingly
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***** DONE Documentation
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CLOSED: [2020-05-14 목 00:54]
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- Explain the following in your cdist.org file
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- What is the difference between gencode-remote and the remote code?
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- What is the difference between gencode-local and gencode-remote?
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- Locate a type that comes with upstream cdist that uses
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gencode-local - which one is it? Why does it need gencode-local?
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* 2020-05-11
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*** cdist #4: Requirements
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**** Lecture content
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***** Objective
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- Understand how requirements work
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***** DONE Create a new type *__my_nginx*
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CLOSED: [2020-05-12 화 02:22]
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- Make it a *singleton*
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- Make it install nginx
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- Configure a host with it
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- Usually nginx is configured includes some files
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- On the target host find out which directory nginx includes
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- We name this directory *nginx_config_dir*
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***** DONE Create a new type *__my_nginx_site*
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CLOSED: [2020-05-12 화 02:22]
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- Assume the *object_id* is a *domain*
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- In the __my_nginx_site create a file inside the *nginx_config_dir*
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- The filename is *${domain}.conf*
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- When using *__file*, it should *require* the *nginx package*
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- Read about cdist dependencies
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- The file should be a valid nginx configuration
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- The *server name* should be set to the specified domain
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- The *root* directive should point to /var/www/html/DOMAIN
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- (replace DOMAIN with the actual domain)
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***** DONE Use both types in the initial manifest to configure the target host
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CLOSED: [2020-05-15 금 21:07]
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- Create at least two domains
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***** DONE Configure the target host
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CLOSED: [2020-05-15 금 21:08]
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- Verify that the configuration files are properly created
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***** DONE Delete the nginx package manually on the target host
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CLOSED: [2020-05-15 금 21:08]
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***** DONE Comment out *__my_nginx* from the initial manifest, keep the *__my_nginx_site*
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CLOSED: [2020-05-15 금 21:08]
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- Explain the error that you get (in your cdist.org file)
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* 2020-05-08
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*** cdist #3: type parameters
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**** Lecture content
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***** DONE Create a new type named *__colourful_file*
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CLOSED: [2020-05-15 금 20:29]
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- The objective is to create a type that creates colourful file
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- The content of the file should be "colour=...", where "..." is a colour specified by a parameter
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- Add an *optional parameter* named *colour*
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- Use the **__file** type inside your type to create a file
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- Use the *$__object_id* variable inside your type
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***** DONE Extend your type to be more colourful
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CLOSED: [2020-05-15 금 20:29]
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- Modify the *optional parameter* to be able to be specified *multiple times*
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- For each time it is specified, add a line "colour=..." to the file
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***** DONE Create a new type *__my_dotfiles*
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CLOSED: [2020-05-15 금 21:07]
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- Objective is to manage the dotfiles in your home directory
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- Make it a *singleton* type
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- Create a sub directory *files* in the type
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- Add your .emacs config to the files folder
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- Add a *for* loop to your type to deploy .[A-z]* to your home directory
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- Add a .bashrc or .zshrc to the files folder (depending on your shell)
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- In the initial manifest, add __my_dotfiles when the target host is localhost
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***** DONE As usual commit all changes to your ungleich-learning-circle repo
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CLOSED: [2020-05-15 금 21:07]
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* 2020-05-06
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*** cdist #2: Your first cdist type
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**** Lecture content
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***** Objective
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****** Begin to understand how cdist types function
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***** Steps
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****** Create a new type named `__my_computer`
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- Mark the type as a singleton type
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- Create a `manifest` file in it
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- Use this type to install the following packages: zsh, mosh, emacs, nmap, sipcalc
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- Edit the *initial manifest* and use **__my_computer** for **localhost**
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- Match using the $__target_host variable
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****** Modify your type to use a *for loop* to install the packages
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****** Deploy / manage your ~/.emacs file in this type
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- Ensure that permissions and ownership are correct
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****** Use different *verbosity* levels when configuring
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****** Ensure that all your changes are committed and pushed in your ungleich-learning-circle repository
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- Use magit inside emacs for that
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***** Documentation steps to be done in cdist.org
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- Create a new org document named `cdist.org` in the same folder as the learning.org file
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- Explain the difference between a singleton and non-singleton type
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- Explain the difference between the different verbosity levels
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- Document (copy&paste) some of the cdist runs in a "log" section```
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* 2020-05-04
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*** cdist #1: Introduction
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**** Lecture content
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***** Objective
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- Begin to use cdist
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***** Steps
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- Checkout cdist quickstart https://www.cdi.st/manual/latest/cdist-quickstart.html
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- Install cdist locally
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- Create a new cdist configuration directory in ~/ungleich-learning-circle/USERNAME/dot-cdist
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- Create an empty initial manifest ("use touch")
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- Commit that status
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- Ensure that you can login as root to localhost via ssh without a password
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- Configure cdist to configures the motd of your localhost
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- Ensure you have a case block matching on $__target_host
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- Use the -c parameter to cdist to specify the configuration directory
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- Use the -vv parameter to get more verbose output
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- Search for / understand what MOTD stands for
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- Configure cdist to create the file /etc/cdist-configured
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- Configure cdist to setup the timezone on your local computer
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- Configure cdist to ensure emacs is installed
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- Ensure that in the end all changes are committed in your repository
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* 2020-05-01
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*** Organisation #5: Emacs refresher
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**** Lecture content
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***** Objective: get confident with emacs commands
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***** Find out and document how to do the following steps
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- Search for something forward C-s
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- How to continue searching C-s C-s
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- Search for something backward C-r
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- Search for regular expressions instead of string (forward, backward) C-M-s C-M-r
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- Go to the beginning of the line C-a
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- Go to the end of the line C-e
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- Delete a word in front (to the right of the cursor) M-d
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- Delete a word in back (to the left of the cursor) M-BackSpace
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- List all "occurences" of a word in a file M-s o
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- You can copy above instructions into an emacs buffer
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- And test it by showing all occurences of the word "Search"
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- Search (GREP) for a word in all files in a directory RECURSIVELY M-x rgrep
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- Save the CURRENT buffer C-x C-s
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- Save ALL open files C-x-s
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- Split the window/buffer vertically C-x 2
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- Split the window/buffer horizontally C-x 3
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- Switch between the different windows C-x o
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- Close all buffers besides the active one C-x 1
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- Don't kill it!
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- Close only the active buffer C-x 0
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-* Don't kill it!
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- Kill the active buffer C-x k
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- Describe/Explain the difference between closing and killing
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- closing is that emac do not display the buffer. and the contents on the buffer are kept on behined screen.
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- killing is that emac delete the buffer. and if contents are not stored, it is losted
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- Switch between buffers that are not shown C-x b
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- Document two very similar, but slightly different ways
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- C-x b is that the selected buffer is displayed on the focused window
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- C-x C-b is that all buffers is dispalayed on the new window
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- C-x 4 b is that the selected buffer is displayed on the new window
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***** Outcome
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- Document all above commands in your learning org sheet
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- Share your documentation at the end of the session (not before)
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* 2020-04-29
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*** Organisation #4: Organising yourself
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**** Lecture content
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***** Objective: have a todo list based on org mode
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***** Steps
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- Configure the "org-directory" to be ~/ungleich-learning-circle/USERNAME/
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- This is important as it will be used by the todo function later
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- Extend your function from the organisation #1 session
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- Instead of opening a fixed file, we include two variable parts:
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- The hostname of the machine
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- The year
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- Pressing F3 should open ~/ungleich-learning-circle/USERNAME/learning-$(hostname)-$(year).org
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- we call this "your personal agenda"
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- Configure mu4e to create a org-mode tasks from an email
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- Store these tasks in ~/ungleich-learning-circle/USERNAME/todo.org
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- Configure emacs to open the "org-agenda" with "C-c a"
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- List all TODO entries
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- List the agenda of the day
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- List the agenda of the week
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- Bind F8 to open the "org-todo-list"
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- Create some sample tasks in it
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***** From now on, maintaining tasks should be
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- Pressing F3 to open your personal "logfile"
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- Adding a TODO item
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- Pressing F8 to see the tasks with priorities
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***** Bonus tasks
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- Configure mu4e to store org-mode tasks in .../todo-$(hostname)-$(year).org
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* 2020-04-27
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*** Organisation #3: Managing your emails
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**** Lecture content
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***** Objective
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- Be able to manage all your mails in mu4e
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***** Description
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- All email is synchronised using isync/mbsync
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- Email is indexed with mu (xapian backend)
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- Email is viewed in mu4e
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- All new emails arrive in the inbox
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***** Steps
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- Install mu4e
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- Start mu4e in emacs
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- Configure mbsync for your ungleich mail account
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- Synchronise all mails into ~/Maildir/ungleich
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- This structure leaves room for other mail accounts, like ~/Maildir/gmail
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- Verify that mbsync synchronises the mail
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- Index mails using `mu` on the command line (only first time)
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- Configure mu4e to get email with mbsync -a
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- Configure mu4e to "archive" emails into ~/Maildir/ungleich/YEAR/
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- This gives you a good performance / organisation for the next decades
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- Configure mu4e/emacs for sending emails
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- Send other participants an email via mu4e
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- Verify that it arrives
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- "Archive" it afterwards
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* 2020-04-24
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*** Organisation #2: Creating, managing and sharing with "magit"
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**** Lecture content
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***** Install "magit" for emacs
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***** Bind C-x g to open magit-status in ~/.emacs
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***** Create a new directory ~/ungleich-learning-circle/ (with emacs)
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- Use C-h b in dired mode to find out how to
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***** Create a sub directory ~/ungleich-learning-circle/YOURNAME/ (with emacs)
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***** Move your previously created learning.org file into ~/ungleich-learning-circle/YOURNAME/ (with emacs)
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***** Initialise it with git (with magit)
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***** Create the repo "ungleich-learning-circle" on code.ungleich.ch under your username
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***** Add your remote on code.ungleich.ch to your local git repo with magit
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***** Push your repo
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***** Add a new remote of a another participant
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***** Move your ~/learning.org to ~/notes
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***** Commit that file with magit
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***** Push the repo with magit
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***** Merging the remote repo with the command line
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***** End result: everyone has everything of everyone else
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* 2020-04-23
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*** Organisation #1: org-mode introduction
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**** Lecture content
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***** Install emacs
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***** Install org-mode
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***** Create a function that opens ~/learning.org in your ~/.emacs
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***** Bind that function to "f3" (configure it in .emacs)
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***** Create a new item named "2020-04-10"
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- Create a sub item "ungleich learning circle"
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