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feat(install): system-wide low-disk login warning via /etc/profile.d

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Add etc/profile.d/disk-usage-warning.sh (POSIX sh) that warns in bold
red at login when / or /home cross 85% usage. Deployed system-wide via
install_disk_warning() (sudo install -D -m 0644), gated inside the
apt-get block since df --output=pcent and /etc/profile.d are GNU/Debian
conventions absent on macOS. Idempotent and re-runnable.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01CN1KSmsuLG6TxSeN5m8xvM
This commit is contained in:
Bastien Chanot
2026-06-24 18:00:17 +02:00
co-authored by Claude Opus 4.8
parent 57cdfeaf25
commit c0fddc6f94
7 changed files with 56 additions and 0 deletions
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@@ -26,3 +26,9 @@ xrdp abandoned (Wayland-only GNOME kills Xorg session). Replaced install_xrdp
empty (BLK-004); 2-layer auth gate→GDM PAM (LRN-004). Added ensure_rdp_credentials (prompt, TTY-guard,
idempotent). Connection CONFIRMED live. install.sh committed 0bd936b (bash -n + shellcheck CLEAN);
push blocked here (HTTPS remote, no creds in env) → user pushes. TPM GKeyFile-fallback warn harmless.
## 2026-06-24 — disk-usage login warning
Added etc/profile.d/disk-usage-warning.sh (POSIX sh, warns bold red when / or /home ≥85%).
install_disk_warning() in install.sh: sudo install -D -m 0644 → /etc/profile.d, gated in apt block
(Linux-only: df --output=pcent GNU-only + /etc/profile.d Debian convention). shellcheck + sh -n CLEAN,
both code paths runtime-verified. README + CLAUDE.md synced. Not committed (master, user to confirm).