Skip to content

clarification on -C option #1123

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
martinosorb merged 2 commits into from
May 10, 2026
Merged

clarification on -C option #1123

Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
926c69d
clarification on -C option
gjduine May 1, 2026
e520d84
updated clarification on SSH key pair creation
gjduine May 8, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
1 change: 1 addition & 0 deletions episodes/07-github.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -205,6 +205,7 @@ To create an SSH key pair Alfredo uses this command, where the `-t` option speci
```bash
$ ssh-keygen -t ed25519 -C "a.linguini@ratatouille.fr"
```
In the command above, the `-C- flag is used to label the SSH key with the owner's email address. It's good practice to use the same email associated to your GitHub account, but it does not have to be, and will not be used to validate the access. You can also decide not to add any label.

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"`
Expand Down