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./dev build short also works as an aliasand will stage the binary at ./cockroach. Bazel will pretty-print build output to the terminal.
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./dev build (or equivalently, ./dev build cockroach) is a synonym for thiswill do the same and will stage the binary at ./cockroach like above.
dev build is a light wrapper for bazel build that supports aliases for common targets (for example, ./dev build crlfmt instead of the harder-to-remember bazel build @com_github_cockroachdb_crlfmt//:crlfmt). dev also copies binaries out of the Bazel output directories for you into your workspace; for example, bazel build pkg/cmd/cockroach-short puts the binary in _bazel/bin/pkg/cmd/cockroach-short/cockroach-short_/cockroach-short, but if you dev build short the binary will be staged at ./cockroach instead.
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