ohhhhhhhhhhh (exclude linux-extra-rootfs.img build artifact)

CODE/linux/tmp_clean_logs.sh

@@ -0,0 +1,11 @@
+#!/usr/bin/env bash
+# Strip CR from serial capture logs so they can be read as plain text.
+set -u
+cd "$(dirname "$0")/../../.build_tmp" || exit 1
+for f in "$@"; do
+    [ -f "$f" ] || { echo "missing: $f"; continue; }
+    out="${f%.txt}_clean.txt"
+    # drop CR plus any control/graphics bytes the read tool would treat as binary
+    tr -cd '\11\12\40-\176' < "$f" > "$out"
+    echo "ok $f -> $out ($(wc -l < "$out") lines)"
+done