Root cause of the "line 9: from: unbound variable" crash: SMS_FORWARD_URL
stores Anveo's own template placeholders literally ($[from]$, $[to]$,
$[message]$ -- text Anveo substitutes on its end, not ours). Written into
settings.env double-quoted, that landed in the file as
SMS_FORWARD_URL="...?from=$[from]$&...". Harmless to write, but the
update path `source`s this same file on every re-run, and bash reads
$[from] as legacy arithmetic expansion ($[...] == $((...))) even inside
double quotes -- a bare name in it means "look up variable from", which
is unset, and setup.sh runs under `set -uo pipefail`, so nounset kills
the whole installer before it gets anywhere near the AMI-diagnostics
code from the last two commits.
Fix: single-quote every value in the written settings.env. A source'd
single-quoted assignment never re-expands its contents, so this is safe
regardless of what SMS_FORWARD_URL (or anything else in that file) holds.
This only fixes future writes -- the box that hit this already has a
broken settings.env on disk from before this fix existed, and "update"
mode sources that file before it gets a chance to rewrite it, so it will
crash the same way one more time even after pulling this. Choosing
"full install" instead on the next run skips the source entirely and
regenerates the file correctly quoted.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01JDyKC6Kdg7tofmYSmRtgww
Claude
868a903683