# tldr pages ## Identification `chmod 755` gives the owner write permission and all users read/execute. `man` and [[tldr pages|tldr]] provide reference help. `rm -rf *` recursively deletes non-hidden entries matched by the shell in the current directory and is dangerous without confirming `pwd` and expansion targets. ## Notebook evidence - [[Scanned_20260730-1719#PDF page 59 — chmod, manuals, tldr, and destructive deletion|PDF page 59: chmod, manuals, tldr, and destructive deletion]] — The page moves from learning how to inspect documentation to a high-risk deletion command. It demonstrates why command knowledge must include preconditions and verification, not syntax alone. ## Relationships and overlays The source relationship is maintained through [[Scanned_20260730-1719|Scanned_20260730-1719]] until another notebook supplies a stronger cross-notebook overlay. Within the larger collection, this evidence extends [[Vendor-Agnostic Recovery|vendor-agnostic recovery]] and [[Continuity Architecture|continuity architecture]] by showing how software, hardware, identity, and pre-OS control depend on recoverable interfaces. ## Evidentiary status and open leads A safe field guide should pair every destructive command with `pwd`, a non-mutating listing, explicit targets, backups, and a recovery expectation. ## Source - [[Scanned_20260730-1719|Scanned_20260730-1719]]