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#exec (2)

Cheat sheets (2)

codex exec — Non-Interactive Mode

Complete reference for codex exec — scripted invocation, stdin piping, JSON event streams, output formats, exit codes, timeouts, and automation patterns for CI, git hooks, and shell pipelines.
codex openai exec non-interactive cli automation ci scripting

Processes — Fork, Exec, Signals, Zombies, Cgroups

Process lifecycle on Unix: fork/exec/wait, PIDs, signals, zombies and orphans, parent/child trees, process groups, sessions, controlling terminals, and a tour of Linux cgroups.
process fork exec signal zombie orphan pid pgid sid cgroup sysadmin