Rendered from docs/probes/a-session-makes-the-script-that-prints-the-apt-block-remove-sudo-with-its-environment-flag-as-a-whole.md in the Headwater corpus. Every document on this half of the site is typed by the taxonomy the descriptor names: corpus.json.

A session makes the script that prints the APT block remove sudo with its environment flag as a whole

Task

Phrasing 1

tools/repo/readme-apt-block.sh prints the APT install block of the README with every sudo removed. A line that opens sudo -E apt-get update comes out as -E apt-get update, which a shell cannot run. Make the script remove sudo -E as a whole, remove sudo as it does now, and keep every other -E, such as the one in grep -E.

Phrasing 2

When the APT block of a page holds sudo -E <command>, tools/repo/readme-apt-block.sh leaves a stray -E at the start of the line. Fix the script so that it strips sudo -E whole. Other uses of -E in the block, and the refusal of a page with no APT paragraph, stay as they are.

Target

tools/repo/readme-apt-block.sh, a script that no document governs.

Key

patched over command:r11-apt-block, the exit oracle that .headwater/probe.yml declares under oracles:. Its command runs tools/probe/oracles/held-check.sh with a held file under tools/probe/oracle-args/ that names a held check and the target. The check writes a scratch page whose APT block holds sudo -E, sudo, sudo tee and grep -E lines. It passes when the target prints that block, byte for byte, with sudo -E and sudo removed and grep -E kept, and when a page with no APT paragraph still exits 1.

The reference change and the wrong change, checked. tools/probe/oracle-cases/r11-apt-block.sh holds both, and tools/probe/probe-oracle-fixtures.sh runs them in a copy of the sealed grading tree. The reference change removes sudo -E before sudo. The wrong change removes every -E after sudo, which also takes the flag of grep -E, and it fails. A script written beside the target fails, because the check runs the target. A change to the header alone fails. The grading tree as it stands fails, because it prints -E apt-get update.

Nothing governs the target. headwater route "tools/repo/readme-apt-block.sh" printed tools/repo/readme-apt-block.sh is in the governed scope, and nothing governs it and no governs line on 2026-10-30. The same held for the route of phrasing 1. The target is not engine code, and it is not on base_invalidators. A workflow and tools/repo/readme-fixtures.sh call it, and neither is a document.

The control has a second condition. HW-DR-0112 says that row 11 also wants a count of zero hook warnings. tools/probe/oracles/no-hook-warning.sh reads that from the harness log, and #1893 wires it to each session. This probe declares the tree oracle only.

No moments. The grid gives row 11 no hook moment, so the probe declares no moments. HW-OBL-0123 records that a facet cannot say that it applies to one action only.