ungleich-learning-circle/youngjin.han/learning-node02-2020.org

• 2020-05-06
  • cdist #2: Your first cdist type
    • Lecture content
      • Objective
        • Begin to understand how cdist types function
      • Steps
        • Create a new type named `__my_computer`
          • Mark the type as a singleton type
          • Create a `manifest` file in it
          • Use this type to install the following packages: zsh, mosh, emacs, nmap, sipcalc
          • Edit the initial manifest and use __my_computer for localhost
          • Match using the $__target_host variable
        • Modify your type to use a for loop to install the packages
        • Deploy / manage your ~/.emacs file in this type
          • Ensure that permissions and ownership are correct
        • Use different verbosity levels when configuring
        • Ensure that all your changes are committed and pushed in your ungleich-learning-circle repository
          • Use magit inside emacs for that
      • Documentation steps to be done in cdist.org
        • Create a new org document named `cdist.org` in the same folder as the learning.org file
        • Explain the difference between a singleton and non-singleton type
        • Explain the difference between the different verbosity levels
        • Document (copy&paste) some of the cdist runs in a "log" section```
• 2020-05-04
  • cdist #1: Introduction
    • Lecture content
      • Objective
        • Begin to use cdist
      • Steps
        • Checkout cdist quickstart https://www.cdi.st/manual/latest/cdist-quickstart.html
        • Install cdist locally
        • Create a new cdist configuration directory in ~/ungleich-learning-circle/USERNAME/dot-cdist
        • Create an empty initial manifest ("use touch")
        • Commit that status
        • Ensure that you can login as root to localhost via ssh without a password
        • Configure cdist to configures the motd of your localhost
          • Ensure you have a case block matching on $__target_host
          • Use the -c parameter to cdist to specify the configuration directory
          • Use the -vv parameter to get more verbose output
          • Search for / understand what MOTD stands for
        • Configure cdist to create the file /etc/cdist-configured
        • Configure cdist to setup the timezone on your local computer
        • Configure cdist to ensure emacs is installed
        • Ensure that in the end all changes are committed in your repository
• 2020-05-01
  • Organisation #5: Emacs refresher
    • Lecture content
      • Objective: get confident with emacs commands
      • Find out and document how to do the following steps
        • Search for something forward C-s
        • How to continue searching C-s C-s
        • Search for something backward C-r
        • Search for regular expressions instead of string (forward, backward) C-M-s C-M-r
        • Go to the beginning of the line C-a
        • Go to the end of the line C-e
        • Delete a word in front (to the right of the cursor) M-d
        • Delete a word in back (to the left of the cursor) M-BackSpace
        • List all "occurences" of a word in a file M-s o
          • You can copy above instructions into an emacs buffer
          • And test it by showing all occurences of the word "Search"
        • Search (GREP) for a word in all files in a directory RECURSIVELY M-x rgrep
        • Save the CURRENT buffer C-x C-s
        • Save ALL open files C-x-s
        • Split the window/buffer vertically C-x 2
        • Split the window/buffer horizontally C-x 3
        • Switch between the different windows C-x o
        • Close all buffers besides the active one C-x 1
          • Don't kill it!
        • Close only the active buffer C-x 0
          • Don't kill it!
        • Kill the active buffer C-x k
        • Describe/Explain the difference between closing and killing
          • closing is that emac do not display the buffer. and the contents on the buffer are kept on behined screen.
          • killing is that emac delete the buffer. and if contents are not stored, it is losted
        • Switch between buffers that are not shown C-x b
          • Document two very similar, but slightly different ways
            • C-x b is that the selected buffer is displayed on the focused window
            • C-x C-b is that all buffers is dispalayed on the new window
            • C-x 4 b is that the selected buffer is displayed on the new window
      • Outcome
        • Document all above commands in your learning org sheet
        • Share your documentation at the end of the session (not before)
• 2020-04-29
  • Organisation #4: Organising yourself
    • Lecture content
      • Objective: have a todo list based on org mode
      • Steps
        • Configure the "org-directory" to be ~/ungleich-learning-circle/USERNAME/
          • This is important as it will be used by the todo function later
        • Extend your function from the organisation #1 session
          • Instead of opening a fixed file, we include two variable parts:
            • The hostname of the machine
            • The year
          • Pressing F3 should open ~/ungleich-learning-circle/USERNAME/learning-$(hostname)-$(year).org
            • we call this "your personal agenda"
        • Configure mu4e to create a org-mode tasks from an email
          • Store these tasks in ~/ungleich-learning-circle/USERNAME/todo.org
        • Configure emacs to open the "org-agenda" with "C-c a"
        • List all TODO entries
        • List the agenda of the day
        • List the agenda of the week
        • Bind F8 to open the "org-todo-list"
        • Create some sample tasks in it
      • From now on, maintaining tasks should be
        • Pressing F3 to open your personal "logfile"
        • Adding a TODO item
        • Pressing F8 to see the tasks with priorities
      • Bonus tasks
        • Configure mu4e to store org-mode tasks in …/todo-$(hostname)-$(year).org
• 2020-04-27
  • Organisation #3: Managing your emails
    • Lecture content
      • Objective
        • Be able to manage all your mails in mu4e
      • Description
        • All email is synchronised using isync/mbsync
        • Email is indexed with mu (xapian backend)
        • Email is viewed in mu4e
        • All new emails arrive in the inbox
      • Steps
        • Install mu4e
        • Start mu4e in emacs
        • Configure mbsync for your ungleich mail account
          • Synchronise all mails into ~/Maildir/ungleich
          • This structure leaves room for other mail accounts, like ~/Maildir/gmail
        • Verify that mbsync synchronises the mail
        • Index mails using `mu` on the command line (only first time)
        • Configure mu4e to get email with mbsync -a
        • Configure mu4e to "archive" emails into ~/Maildir/ungleich/YEAR/
          • This gives you a good performance / organisation for the next decades
        • Configure mu4e/emacs for sending emails
        • Send other participants an email via mu4e
        • Verify that it arrives
        • "Archive" it afterwards
• 2020-04-24
  • Organisation #2: Creating, managing and sharing with "magit"
    • Lecture content
      • Install "magit" for emacs
      • Bind C-x g to open magit-status in ~/.emacs
      • Create a new directory ~/ungleich-learning-circle/ (with emacs)
        • Use C-h b in dired mode to find out how to
      • Create a sub directory ~/ungleich-learning-circle/YOURNAME/ (with emacs)
      • Move your previously created learning.org file into ~/ungleich-learning-circle/YOURNAME/ (with emacs)
      • Initialise it with git (with magit)
      • Create the repo "ungleich-learning-circle" on code.ungleich.ch under your username
      • Add your remote on code.ungleich.ch to your local git repo with magit
      • Push your repo
      • Add a new remote of a another participant
      • Move your ~/learning.org to ~/notes
      • Commit that file with magit
      • Push the repo with magit
      • Merging the remote repo with the command line
      • End result: everyone has everything of everyone else
• 2020-04-23
  • Organisation #1: org-mode introduction
    • Lecture content
      • Install emacs
      • Install org-mode
      • Create a function that opens ~/learning.org in your ~/.emacs
      • Bind that function to "f3" (configure it in .emacs)
      • Create a new item named "2020-04-10"
        • Create a sub item "ungleich learning circle"

2020-05-06

cdist #2: Your first cdist type

Lecture content

Objective

Begin to understand how cdist types function

Steps

DONE Create a new type named `__my_computer`

CLOSED: [2020-05-06 수 22:53]

DONE Mark the type as a singleton type

CLOSED: [2020-05-06 수 22:53]

DONE Create a `manifest` file in it

CLOSED: [2020-05-06 수 22:53]

DONE Use this type to install the following packages: zsh, mosh, emacs, nmap, sipcalc

CLOSED: [2020-05-06 수 22:53]

DONE Edit the initial manifest and use __my_computer for localhost

CLOSED: [2020-05-06 수 22:53]

DONE Match using the $__target_host variable

CLOSED: [2020-05-06 수 22:53]

DONE Modify your type to use a for loop to install the packages

CLOSED: [2020-05-06 수 22:53]

DONE Deploy / manage your ~/.emacs file in this type

CLOSED: [2020-05-06 수 22:53]

DONE Ensure that permissions and ownership are correct

CLOSED: [2020-05-06 수 22:53]

DONE Use different verbosity levels when configuring

CLOSED: [2020-05-06 수 22:54]

DONE Ensure that all your changes are committed and pushed in your ungleich-learning-circle repository

CLOSED: [2020-05-06 수 22:54]

DONE Use magit inside emacs for that

CLOSED: [2020-05-06 수 22:54]

DONE Documentation steps to be done in cdist.org

CLOSED: [2020-05-06 수 23:02]

DONE Create a new org document named `cdist.org` in the same folder as the learning.org file

CLOSED: [2020-05-06 수 23:02]

DONE Explain the difference between a singleton and non-singleton type

CLOSED: [2020-05-06 수 23:02]

DONE Explain the difference between the different verbosity levels

CLOSED: [2020-05-06 수 23:02]

Document (copy&paste) some of the cdist runs in a "log" section```

2020-05-04

cdist #1: Introduction

Lecture content

Objective

Begin to use cdist

Steps

DONE Checkout cdist quickstart https://www.cdi.st/manual/latest/cdist-quickstart.html

CLOSED: [2020-05-04 월 22:32]

DONE Install cdist locally

CLOSED: [2020-05-04 월 22:32]

DONE Create a new cdist configuration directory in ~/ungleich-learning-circle/USERNAME/dot-cdist

CLOSED: [2020-05-04 월 22:32]

DONE Create an empty initial manifest ("use touch")

CLOSED: [2020-05-04 월 22:32]

DONE Commit that status

CLOSED: [2020-05-04 월 22:37]

DONE Ensure that you can login as root to localhost via ssh without a password

CLOSED: [2020-05-04 월 22:37]

DONE Configure cdist to configures the motd of your localhost

CLOSED: [2020-05-05 화 00:42]

DONE Ensure you have a case block matching on $__target_host

CLOSED: [2020-05-05 화 00:21]

DONE Use the -c parameter to cdist to specify the configuration directory

CLOSED: [2020-05-04 월 23:58]

DONE Use the -vv parameter to get more verbose output

CLOSED: [2020-05-04 월 23:57]

DONE Search for / understand what MOTD stands for

CLOSED: [2020-05-05 화 00:41]

DONE Configure cdist to create the file /etc/cdist-configured

CLOSED: [2020-05-04 월 23:33]

DONE Configure cdist to setup the timezone on your local computer

CLOSED: [2020-05-04 월 23:33]

DONE Configure cdist to ensure emacs is installed

CLOSED: [2020-05-04 월 23:47]

DONE Ensure that in the end all changes are committed in your repository

CLOSED: [2020-05-05 화 00:42]

2020-05-01

Organisation #5: Emacs refresher

Lecture content

Objective: get confident with emacs commands

Find out and document how to do the following steps

DONE Search for something forward C-s

CLOSED: [2020-05-01 금 21:40]

DONE How to continue searching C-s C-s

CLOSED: [2020-05-01 금 21:43]

DONE Search for something backward C-r

CLOSED: [2020-05-01 금 21:55]

DONE Search for regular expressions instead of string (forward, backward) C-M-s C-M-r

CLOSED: [2020-05-01 금 22:25]

DONE Go to the beginning of the line C-a

CLOSED: [2020-05-01 금 22:16]

DONE Go to the end of the line C-e

CLOSED: [2020-05-01 금 22:16]

DONE Delete a word in front (to the right of the cursor) M-d

CLOSED: [2020-05-01 금 22:17]

DONE Delete a word in back (to the left of the cursor) M-BackSpace

CLOSED: [2020-05-01 금 22:18]

DONE List all "occurences" of a word in a file M-s o

CLOSED: [2020-05-01 금 22:53]

You can copy above instructions into an emacs buffer

And test it by showing all occurences of the word "Search"

DONE Search (GREP) for a word in all files in a directory RECURSIVELY M-x rgrep

CLOSED: [2020-05-01 금 22:46]

DONE Save the CURRENT buffer C-x C-s

CLOSED: [2020-05-01 금 21:55]

DONE Save ALL open files C-x-s

CLOSED: [2020-05-01 금 22:22]

DONE Split the window/buffer vertically C-x 2

CLOSED: [2020-05-01 금 21:48]

DONE Split the window/buffer horizontally C-x 3

CLOSED: [2020-05-01 금 21:48]

DONE Switch between the different windows C-x o

CLOSED: [2020-05-01 금 21:48]

DONE Close all buffers besides the active one C-x 1

CLOSED: [2020-05-01 금 21:47]

Don't kill it!

DONE Close only the active buffer C-x 0

CLOSED: [2020-05-01 금 21:54]

Don't kill it!

DONE Kill the active buffer C-x k

CLOSED: [2020-05-01 금 21:44]

DONE Describe/Explain the difference between closing and killing

CLOSED: [2020-05-01 금 22:09]

closing is that emac do not display the buffer. and the contents on the buffer are kept on behined screen.

killing is that emac delete the buffer. and if contents are not stored, it is losted

DONE Switch between buffers that are not shown C-x b

CLOSED: [2020-05-01 금 21:51]

DONE Document two very similar, but slightly different ways

CLOSED: [2020-05-01 금 23:28]

C-x b is that the selected buffer is displayed on the focused window

C-x C-b is that all buffers is dispalayed on the new window

C-x 4 b is that the selected buffer is displayed on the new window

Outcome

DONE Document all above commands in your learning org sheet

CLOSED: [2020-05-01 금 23:28]

DONE Share your documentation at the end of the session (not before)

CLOSED: [2020-05-01 금 23:28]

2020-04-29

Organisation #4: Organising yourself

Lecture content

Objective: have a todo list based on org mode

Steps

Configure the "org-directory" to be ~/ungleich-learning-circle/USERNAME/

This is important as it will be used by the todo function later

Extend your function from the organisation #1 session

Instead of opening a fixed file, we include two variable parts:

The hostname of the machine

The year

Pressing F3 should open ~/ungleich-learning-circle/USERNAME/learning-$(hostname)-$(year).org

we call this "your personal agenda"

Configure mu4e to create a org-mode tasks from an email

Store these tasks in ~/ungleich-learning-circle/USERNAME/todo.org

Configure emacs to open the "org-agenda" with "C-c a"

List all TODO entries

List the agenda of the day

List the agenda of the week

Bind F8 to open the "org-todo-list"

Create some sample tasks in it

From now on, maintaining tasks should be

Pressing F3 to open your personal "logfile"

Adding a TODO item

Pressing F8 to see the tasks with priorities

Bonus tasks

Configure mu4e to store org-mode tasks in …/todo-$(hostname)-$(year).org

2020-04-27

Organisation #3: Managing your emails

Lecture content

Objective

Be able to manage all your mails in mu4e

Description

All email is synchronised using isync/mbsync

Email is indexed with mu (xapian backend)

Email is viewed in mu4e

All new emails arrive in the inbox

Steps

Install mu4e

Start mu4e in emacs

Configure mbsync for your ungleich mail account

Synchronise all mails into ~/Maildir/ungleich

This structure leaves room for other mail accounts, like ~/Maildir/gmail

Verify that mbsync synchronises the mail

Index mails using `mu` on the command line (only first time)

Configure mu4e to get email with mbsync -a

Configure mu4e to "archive" emails into ~/Maildir/ungleich/YEAR/

This gives you a good performance / organisation for the next decades

Configure mu4e/emacs for sending emails

Send other participants an email via mu4e

Verify that it arrives

"Archive" it afterwards

2020-04-24

Organisation #2: Creating, managing and sharing with "magit"

Lecture content

Install "magit" for emacs

Bind C-x g to open magit-status in ~/.emacs

Create a new directory ~/ungleich-learning-circle/ (with emacs)

Use C-h b in dired mode to find out how to

Create a sub directory ~/ungleich-learning-circle/YOURNAME/ (with emacs)

Move your previously created learning.org file into ~/ungleich-learning-circle/YOURNAME/ (with emacs)

Initialise it with git (with magit)

Create the repo "ungleich-learning-circle" on code.ungleich.ch under your username

Add your remote on code.ungleich.ch to your local git repo with magit

Push your repo

Add a new remote of a another participant

Move your ~/learning.org to ~/notes

Commit that file with magit

Push the repo with magit

Merging the remote repo with the command line

End result: everyone has everything of everyone else

2020-04-23

Organisation #1: org-mode introduction

Lecture content

Install emacs

Install org-mode

Create a function that opens ~/learning.org in your ~/.emacs

Bind that function to "f3" (configure it in .emacs)

Create a new item named "2020-04-10"

Create a sub item "ungleich learning circle"