Setup

The UK government keeps an ics file with clock, here.

This is bare-bones, original, primitive e-mail.

Install opensmtpd (or similar), then ncat or nc or netcat (this mysterious cat has many names).

Start the opensmtpd service, then use netcat to speak with the mail-daemon:

1nc localhost 25

The computer should respond with code 220, which means 'I am listening'.

220 hex …

Starting

New Machines

1git config --global user.email "$YOUR_EMAIL"

1git config --global user.name "$YOUR_NAME"

New Git

Start a git in directory $DIR:

1mkdir $DIR && cd $DIR

1git init

Make a file explaining what the project does:

1vim README.md

Add this to the git:

1git add README.md

Then make …

Pulling a Subtree from an existing git

The project has subdirectories sub-1, sub-2, sub-3. The first should be its own repository, but should also retain its own history.

First, we extract its history as an independent item, and make that into a seprate branch.

1git subtree split --prefix=sub-1 -b sub

If you want …

Check out the sample hooks:

1cd $GIT_REPO
2ls .git/hooks
3head .git/hooks/pre-commit.sample

Add a hook to check the shell scripts in $GIT_REPO before making a commit:

1echo '#!/bin/sh
2shellcheck *.sh' > .git/hooks/commit-msg
3chmod u+x .git/hooks/commit-msg

Committing

Your git hooks will not enter the …

Install, and add with

1git lfs install

Then track some filetype with:

1git lfs track "\*.ttf"

Or a directory with:

1git lfs track "images/"

All changes require adding .gitattributes.

This utility is largely useless, as it can only identify people by their email. So if someone has multiple GPG keys associated with one email, the tool will not work.

A broken tool is better than a tool which will break soon.

• Setup
• Extras

The vim-gnupg plugin lets vim edit gpg-encrypted files as if they were unencrypted.

It's probably in your package manager. If not, you'll need to endure the faff of following the instructions.