#env

This documents version 0.2.1. The support record tracks platform verification and exact-version publication evidence separately.

Print the environment or execute one command with explicit environment changes. Supports -i/--ignore-environment and -u NAME/--unset=NAME. The common GNU path also accepts bare - as an empty-environment request, -0/--null for NUL-separated output, and -C/--chdir for the child working directory. --null with a child command fails with status 125. Command execution uses MoonBit's policy-visible process API, never a shell; the command and every argument are passed as separate argv entries. Because execution can create a child process, the caller or host may require process authorization. The command itself does not implement an allowlist.

Option/assignment precedence, repeated unsets, --, command lookup, and exit statuses 125 (command setup), 126 (not invokable), and 127 (not found) are covered by the P2 profile. Non-empty assignment names are passed through even when they are not shell identifiers, and the first assignment ends option scanning. --help and --version return successful output.

Both backends start from the complete environment made available by the host, then apply the requested removals and assignments. LANG, LC_ALL, and other names are neither filtered nor rewritten. Host authorization still applies to the child working directory and executable.

#Standalone metadata

Standalone --version prints exactly env 0.2.1 followed by one newline. Standalone --help starts with Usage: env, lists both metadata options, and ends with a newline. Both write to stdout, leave stdin unread, and exit with status 0. Exact-version publication and verification remain recorded separately in the support record.

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