Run applications and migrations

db-git run -- npm run dev
db-git run -- python manage.py migrate
db-git run -- sh -c 'psql "$DATABASE_URL"'

run resolves the current branch once, verifies its database exists, then launches the command with DATABASE_URL set to that database. In shared mode it uses the configured database on PostgreSQL or the active generation on MySQL. The child also receives DB_GIT_DATABASE_URL containing the seed URL, so nested db-git commands retain the management connection.

The command inherits your working directory, input/output, and remaining environment. On POSIX it replaces the wrapper process, preserving signals and the application's exit status. A missing executable exits 127; an executable that cannot be started exits 126. Arguments are passed directly without shell expansion. Use sh -c '...' explicitly if you need shell syntax.

run requires initialization and an existing database; it does not automatically clone one. It refuses untracked branch databases, interrupted recovery operations, detached HEAD in per-branch mode, and disabled switching in shared mode. Create or recover the database first. Stop and restart your app when you switch branches; a running process keeps the URL selected at launch.