update new-git-install-config.md

new-git-install-config.md

@@ -21,6 +21,15 @@ git config --global user.name "crybx"
 git config --global user.email "crybx@users.noreply.github.com"
 ```
 
+### set user for single repo
+
+from within the repo:
+
+```
+git config user.name "Username"
+git config user.email "your.email@example.com"
+```
+
 ### default settings I like
 
 ```
@@ -41,23 +50,30 @@ These are:
 
 ### set line endings setting
 
-`git config core.autocrlf <true/false>`
+`git config core.autocrlf <true/false/input>`
 
 - false means don't convert anything
 - true is what you want if all work will be done on Windows
+- input means pull line endings as they are in the repo but convert to LF on commit
 
 I've read so much about git and line endings, and I still get frustrated. I don't like any of the options. 
 
-### generate an SSH key
+### generate an SSH key for GitHub
 
-On pc, per GitHub's instructions (use the email you would use to log in to GitHub):
+On pc, per [GitHub's instructions](https://docs.github.com/en/authentication/connecting-to-github-with-ssh) (use the email you would use to log in to GitHub):
 
 `ssh-keygen -t ed25519 -C "your_email@example.com"`
 
 > Note: If you are using a legacy system that doesn't support the Ed25519 algorithm, use:
 > 
 > `ssh-keygen -t rsa -b 4096 -C "your.email@example.com"`
 
+copy the contents of the id_ed25519.pub file to your clipboard (for pasting in to GitHub):
+
+`pbcopy < ~/.ssh/id_ed25519.pub`
+
+### generate an SSH key
+
 on pc:
 
 `ssh-keygen -t rsa -C "your.email@example.com"`