gcloud projects create

gcloud projects create mytestproject

gcloud projects create mytestproject
ERROR: (gcloud.projects.create) Project creation failed. The project ID you specified is already in use by another project. 
Please try an alternative ID.

See also

• Google Cloud projects: gcloud projects [ list | describe | create | get-iam-policy | set-iam-policy ]
• gcloud [ config | scheduler | auth | asset | services | gcloud auth login | iam | sql | projects | container | compute | kms | source], gcloud composer environments create | build | gcloud config set project, gcloud source repos create, gcloud composer environments create, gcloud version, gcloud --help