24 lines
1.4 KiB
Markdown
24 lines
1.4 KiB
Markdown
# Concept — POSIX stance
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Bare OS exposes a **POSIX-shaped** shell, **`/bin`**, and VFS, but it is **not** a certified UNIX kernel. The project publishes a **declared profile** so you know what is promised vs out of scope.
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## What “POSIX-like” means here
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- **Tier-1 `/bin`** — a curated set of utilities built from [bare-os-coreutils](../../packages/bare-os-coreutils/README.md); names and behavior are tracked against a declared profile and Issue 7 traceability docs.
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- **Syscalls** — many operations go through **`ctx.bareOsSyscall`** and **`/proc`** JSON mirrors rather than a hardware trap interface — see the syscall facade map.
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- **Sockets** — optional **socket FD bridge** behind env gates; not “Linux identical.”
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## Where the contract lives
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| Artifact | Role |
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| --- | --- |
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| [POSIX declared profile](../architecture/POSIX_DECLARED_PROFILE.md) | Narrative stance, non-goals |
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| [POSIX compliance dashboard](../reference/posix-dashboard.md) | Generated summary |
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| [POSIX Issue 7 traceability](../reference/posix-issue7-traceability.md) | XBD/XSH/XCU mapping |
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| [Compatibility matrix](../reference/compatibility-matrix.md) | Profile version, ctx API, schemas |
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## Read next
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- **Handbook** — [Chapter 9 — POSIX, shell, VFS](../../handbook/09-posix-utilities-shell-and-vfs.md).
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- **Reference** — [posix-syscall-facade-map.md](../reference/posix-syscall-facade-map.md) · [syscall-socket-contract.md](../reference/syscall-socket-contract.md).
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