ln tips — authorized link-create tip checklist
ln helps authorized labs sample hard/symlink-create literacy on trees they own. Pair with unlink-tips, mkdir-tips, dirname-tips, basename-tips, rmdir-tips. Prefer lab VMs — never stage links into foreign trees without permission. Distinct from unlink-tips (create ≠ remove) and mkdir-tips (link ≠ directory). Preferred dd-tips already lived; this SWAP uses free backup ln-tips.
Snapshot
| Field | Value |
|---|---|
| Surface | ln tip checklist (ln / -s / -f / -v) |
| Job | Authorized hard/symlink-create tip literacy |
| Peer | unlink-tips |
| Peer | mkdir-tips |
| Peer | dirname-tips |
| Peer | basename-tips |
Tip checklist (authorized only)
- Confirm you may create links on the lab tree (syllabus box you own).
- Prefer documenting who / why / ticket before linking production trees — never stage foreign hosts without change control.
- Record short factual notes; quote short Evidence (flag + link-type label + path label — never secrets).
- Optional: unlink peer → unlink-tips when the syllabus prefers single-name removal drills.
- Optional: dirname peer → dirname-tips when the syllabus zooms on path-component extraction.
- Prefer disposable lab fixtures for drills; quote non-secret path labels afterward as Evidence.
- Prefer
ln/ln -s/ln -fread-back — refuse unauthorized foreign-tree cookbooks. - Stop at literacy — no attack or unauthorized symlink-race cookbooks.
Allowed framing
- Classroom labs reviewing hard links vs symlinks vs unlink on disposable samples.
- Binding short factual notes as Evidence (flags + link-type labels — no secrets).
- Documenting expected vs observed link targets for authorized notes.
- Comparing ln ↔ unlink / mkdir / dirname / basename peer tip pages under one binder.
- Testing syllabus-approved lab fixtures only when change control authorizes that drill on lab resources.
Scope we will not cover
- No crack/pirate/keygen via ln.
- No intentional unauthorized link-staging against foreign trees.
- No secret-theft or credential harvesting via symlink races.
- No cookbooks that use ln as an attack step against production without authorization.
- No ln framed as a covert TOCTOU / symlink-attack guide against systems you do not own.
Beginner path (authorized only)
- Obtain one syllabus-approved disposable lab fixture with coreutils ln available.
- Prefer a throwaway lab path (unlink-tips, mkdir-tips) before touching real production trees.
- With authorization, sample selected hard/symlink wraps; quote flag + link-type + path label as Evidence.
- Optional: peer tip pages above when the syllabus asks.
- Stop at literacy — no attack or unauthorized symlink-race cookbooks.
Practical notes for authorized labs
- Link-create tip checklist is the zoom here — keep Evidence labels distinct from unlink-tips (create ≠ remove) and mkdir-tips (link ≠ directory).
- Pair with basename-tips when the syllabus zooms on path-component extraction vs linking.
- Prefer documenting that
lndefaults to hard links andln -screates symlinks when comparing syllabus notes. - Prefer documenting flags, link-type labels, and path labels the syllabus authorized.
- Never commit link maps of secrets or proprietary host inventories to git — even for labs.
FAQ-aligned refusals (quick)
- Foreign-tree link-staging → refuse.
- Unauthorized symlink-race / attack cookbooks → refuse.
- Attack/credential-theft framing → refuse.
- Prefer authorized, redacted, secret-free Evidence.
- Use unlink / mkdir / dirname / basename peer tip pages when the syllabus asks.
- No crack or unauthorized-access framing.
For legal, authorized and educational use only.
FAQ
What is a "ln tip" page in BinBench framing?
A checklist for authorized hard/symlink-create Evidence (ln / ln -s / ln -f on lab trees) on hosts you own or were given syllabus access to — not a cookbook for linking into foreign hosts without permission.
How does this relate to unlink-tips / mkdir-tips / dirname-tips / basename-tips / rmdir-tips?
unlink-tips covers unlink; mkdir-tips covers mkdir; dirname-tips covers dirname; basename-tips covers basename; rmdir-tips covers rmdir. This page zooms on a ln tip checklist — it does not overwrite those pages.
Can I ln into directories I do not own?
No. Authorization first. BinBench will not publish unauthorized link-staging cookbooks against foreign hosts or unlicensed trees.
Does this teach attack or secret-harvesting PoCs via ln?
No. Mentions of attack/bypass appear only as refusals. Authorized literacy only — prefer lab VMs and redacted path labels. Never teach hostile symlink races as an attack step.
Does this teach secret theft via ln?
No. Never paste link targets that reveal secret-bearing paths, foreign host inventories, or credential files into notes. Prefer documenting flags, link-type labels, and path labels only.