tag

#variables

2 posts

Shell & TerminalDeep Dive October 3, 2026 8 min read

Fish Universal Variables: Persistent State, Scope Precedence, and Exports

Operate Fish universal variables safely across shells and restarts, diagnose scope precedence, and separate persisted Fish state from child-process environments.

#fish#variables#environment

Shell & TerminalDeep Dive October 3, 2026 7 min read

tcsh Variable Expansion: Use Word Lists and Modifiers Deliberately

Handle tcsh's list-valued variables, indexed argv access, quoting modifiers, and path transformations without confusing them with history expansion.

#tcsh#variables#expansion