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coaster set · co-shell-010 · 4-pack
Shell Exit Codes.
the only code your boss wants to see: 0.
launching spring 2026
$16.99
✓0 — it worked. $?, &&,
set -e, CI green.✓1 — something broke. Read stderr first.
✓126 — not allowed. chmod · shebang · ls -la.
✓130 — you killed it. SIGINT / SIGTERM / SIGKILL.
3.75" × 3.75"
each coaster
Cork-backed
hardboard
Dye-sub
print
§ the full brief
the only code your boss wants to see: 0.
Four coasters. Four exit codes. The ones that show up in your scripts, your CI pipelines, and your nightmares.
The set
Coaster 1 — 0 · "It worked." $?, &&,
Coaster 2 — 1 · "Something broke." Read stderr first. typo?, ||,
Coaster 3 — 126 · "Not allowed." chmod, shebang, ls permissions, sibling code 127. Permission problems.
Coaster 4 — 130 · "You killed it." SIGINT, SIGTERM, SIGKILL, signal math (128+N). "no graceful — OOM?"
set -e, CI green. The only code your boss wants to see.Coaster 2 — 1 · "Something broke." Read stderr first. typo?, ||,
2>&1, --help. "catch-all — read the actual error."Coaster 3 — 126 · "Not allowed." chmod, shebang, ls permissions, sibling code 127. Permission problems.
Coaster 4 — 130 · "You killed it." SIGINT, SIGTERM, SIGKILL, signal math (128+N). "no graceful — OOM?"
If you've ever stared at "exit code 126"
…wondering what you did wrong, this coaster has your answer.
The details
4 glossy hardboard coasters, 3.75" × 3.75". Cork-backed, heat resistant. Dye sublimation print.
Perfect for
Linux users, DevOps engineers, sysadmins, and anyone who writes bash scripts.
Part of the quux coaster collection. quux.shop
