diff --git a/userland/archive-tools/README.md b/userland/archive-tools/README.md
index b7b6d2c..33e8d0a 100644
--- a/userland/archive-tools/README.md
+++ b/userland/archive-tools/README.md
@@ -34,4 +34,5 @@ nix develop -c cargo test -p sausage-archive-tools --target aarch64-unknown-linu
 
 The test script compares cross-format tar and gzip transfers with native tools.
 It also compares common GoAWK one-liners and checks the pinned QuickJS command.
-The full T42 acceptance suite remains incomplete.
+The real-world tests live in `fs-tools/world-test.nu`.
+Nix packaging remains deferred until T17 merges.
diff --git a/userland/fs-tools/world-test.nu b/userland/fs-tools/world-test.nu
index c055946..5d192e4 100644
--- a/userland/fs-tools/world-test.nu
+++ b/userland/fs-tools/world-test.nu
@@ -20,13 +20,15 @@ def main [fixture: path, native_esbuild: path] {
     cp -r $fixture ($bundle | path join src app)
     let host = ($target | path join debug sausage)
     let world = ($root | path join world)
-    let script = 'id; id -un; printf hello > /payload; du -b /payload; stat -c "%n %s %F %U %G" /payload; printf "2 a\n3 b\n" | awk "{sum += \$1} END {print sum}"; tar -czf /world.tgz -C / payload; qjs -e "console.log(6*7)"; esbuild /src/app/app.tsx --bundle --minify --format=iife --platform=browser --jsx=automatic --jsx-import-source=preact --legal-comments=none --log-level=error --outfile=/app.js'
+    let script = 'set -e; id; id -un; printf hello > /payload; du -b /payload; stat -c "%n %s %F %U %G" /payload; printf "2 a\n3 b\n" | awk "{sum += \$1} END {print sum}"; tar -czf /world.tgz -C / payload; qjs -e "console.log(6*7)"; esbuild /src/app/app.tsx --bundle --minify --format=iife --platform=browser --jsx=automatic --jsx-import-source=preact --legal-comments=none --log-level=error --outfile=/app.js'
     let result = (^$host sh $world --userland $bundle -c $script | complete)
     print $result.stdout
     if $result.stderr != '' { print --stderr $result.stderr }
     check ($result.exit_code == 0) 'real world shell and esbuild'
     check ($result.stdout | str contains 'uid=0(root) gid=0(root) groups=0(root)') 'world root identity'
     check ($result.stdout | str contains '/payload 5 regular file root root') 'world portable stat'
+    check ($result.stdout | str contains $'5(char tab)/payload') 'world apparent du'
+    check ('5' in ($result.stdout | lines)) 'world awk pipeline'
     check ($result.stdout | str contains '42') 'world QuickJS'
     let native_bundle = ($root | path join native.js)
     let native = (do { cd ($bundle | path join src app); ^$native_esbuild app.tsx --bundle --minify --format=iife --platform=browser --jsx=automatic --jsx-import-source=preact --legal-comments=none --log-level=error $'--outfile=($native_bundle)' } | complete)