# iTerm2 ## Identification [[iTerm2|iTerm2]], [[Homebrew|Homebrew]], Bash, Zsh, and Fish form a macOS/Linux command-line environment. `drwxr-xr-x+` denotes a directory with owner/group/other permission triples and extended ACLs (`+`). `chmod 777` grants all permission bits to everyone and is rarely an appropriate fix. ## Notebook evidence - [[Scanned_20260730-1719#PDF page 58 — Shell navigation and Unix permission bits|PDF page 58: Shell navigation and Unix permission bits]] — This is a learning page translating symbolic permissions into user/group/other roles. It supplies the user-space access-control knowledge needed before manipulating boot files or system directories. ## Relationships and overlays The source places this note in a shared evidence cluster with [[Homebrew|Homebrew]]. 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 Add ACLs, ownership, `umask`, safe recursive use, and least privilege. Replace “777 all” with task-specific examples. ## Source - [[Scanned_20260730-1719|Scanned_20260730-1719]] ## Scanned_20260730-1659 overlay **Source evidence:** [[Scanned_20260730-1659#PDF page 44 — XQuartz, freedesktop.org, Arch Linux, and Oh My Zsh|page 44]]. [[XQuartz|XQuartz]] brings the X.Org X11 display system to macOS; freedesktop.org standardizes Linux desktop interoperability. Parrot OS is security-oriented Linux; Arch Linux is a rolling-release distribution; DiskMaker X creates macOS installers; Oh My Zsh configures the [[Z shell|Z shell]]; iTerm2 is a macOS terminal. `appcourse.com` and the United Airlines fragment remain unresolved. **Relationship overlay:** [[Arch Linux|Arch Linux]] · [[DiskMaker X|DiskMaker X]] · [[freedesktop.org|freedesktop.org]] · [[Oh My Zsh|Oh My Zsh]] · [[Parrot OS|Parrot OS]] · [[X.Org Server|X.Org Server]] · [[XQuartz|XQuartz]] · [[Z shell|Z shell]]. This evidence supplements rather than replaces earlier notebook interpretations. It connects the existing note to [[Identity Continuity|identity continuity]], [[Device Sovereignty|device sovereignty]], and [[Scanned_20260730-1659|Scanned_20260730-1659]].