diff --git a/scripts/z-run b/scripts/z-run
index b717342..eed252a 100644
--- a/scripts/z-run
+++ b/scripts/z-run
@@ -19,12 +19,12 @@
 
 << execute / server / debug
 	"${ZRUN[@]}" ':: go / build / server / debug'
-	exec -- env -i ./.outputs/binaries/debug/kawipiko-server "${@}"
+	exec -- env -i -- ./.outputs/binaries/debug/kawipiko-server "${@}"
 !!
 
 << execute / server / release
 	"${ZRUN[@]}" ':: go / build / server / release'
-	exec -- env -i ./.outputs/binaries/release/kawipiko-server "${@}"
+	exec -- env -i -- ./.outputs/binaries/release/kawipiko-server "${@}"
 !!
 
 
@@ -32,6 +32,7 @@
 	test "${#}" -eq 0
 	_outputs="$( exec -- readlink -e -- ./.outputs )"
 	mkdir -p -- "${_outputs}/binaries/debug"
+	rm -f -- "${_outputs}/binaries/debug/kawipiko-server"
 	exec -- "${ZRUN[@]}" ':: go / tool' \
 			build \
 			-v \
@@ -44,6 +45,7 @@
 	test "${#}" -eq 0
 	_outputs="$( exec -- readlink -e -- ./.outputs )"
 	mkdir -p -- "${_outputs}/binaries/release"
+	rm -f -- "${_outputs}/binaries/release/kawipiko-server"
 	exec -- "${ZRUN[@]}" ':: go / tool' \
 			build \
 			-v \
@@ -58,6 +60,7 @@
 << go / build / server / analyze
 	test "${#}" -eq 0
 	_outputs="$( exec -- readlink -e -- ./.outputs )"
+	mkdir -p -- "${_outputs}/binaries/debug"
 	rm -f -- "${_outputs}/binaries/debug/kawipiko-server"
 	exec -- "${ZRUN[@]}" ':: go / tool' \
 			build \
@@ -96,12 +99,12 @@
 
 << execute / archiver / debug
 	"${ZRUN[@]}" ':: go / build / archiver / debug'
-	exec -- env -i ./.outputs/binaries/debug/kawipiko-archiver "${@}"
+	exec -- env -i -- ./.outputs/binaries/debug/kawipiko-archiver "${@}"
 !!
 
 << execute / archiver / release
 	"${ZRUN[@]}" ':: go / build / archiver / release'
-	exec -- env -i ./.outputs/binaries/release/kawipiko-archiver "${@}"
+	exec -- env -i -- ./.outputs/binaries/release/kawipiko-archiver "${@}"
 !!
 
 
@@ -109,6 +112,7 @@
 	test "${#}" -eq 0
 	_outputs="$( exec -- readlink -e -- ./.outputs )"
 	mkdir -p -- "${_outputs}/binaries/debug"
+	rm -f -- "${_outputs}/binaries/debug/kawipiko-archiver"
 	exec -- "${ZRUN[@]}" ':: go / tool' \
 			build \
 			-v \
@@ -121,6 +125,7 @@
 	test "${#}" -eq 0
 	_outputs="$( exec -- readlink -e -- ./.outputs )"
 	mkdir -p -- "${_outputs}/binaries/release"
+	rm -f -- "${_outputs}/binaries/release/kawipiko-archiver"
 	exec -- "${ZRUN[@]}" ':: go / tool' \
 			build \
 			-v \
@@ -330,7 +335,7 @@
 
 << documentation / readme / server
 	test "${#}" -eq 0
-	exec -- env -i ./.python/bin/restview --no-browser --listen 127.33.237.174:8080 --allowed-hosts '*' -- ./readme.rst
+	exec -- env -i -- ./.python/bin/restview --no-browser --listen 127.33.237.174:8080 --allowed-hosts '*' -- ./readme.rst
 !!
 
 
@@ -365,7 +370,7 @@
 		chrt -r 10 \
 		prlimit -n16384 -- \
 		sudo -u "${USER}" -n -E -P -- \
-		env -i \
+		env -i -- \
 	./.outputs/binaries/release/kawipiko-server \
 			--bind 127.9.185.194:8080 \
 			--archive "${_archive}" \
@@ -451,7 +456,7 @@
 		chrt -r 10 \
 		prlimit -n16384 -- \
 		sudo -u "${USER}" -n -E -P -- \
-		env -i \
+		env -i -- \
 	"$( type -P -- wrk )" \
 			--threads 2 \
 			--connections 1 \
@@ -476,7 +481,7 @@
 		chrt -r 10 \
 		prlimit -n16384 -- \
 		sudo -u "${USER}" -n -E -P -- \
-		env -i \
+		env -i -- \
 	"$( type -P -- wrk )" \
 			--threads 2 \
 			--connections 1 \
@@ -503,13 +508,16 @@
 	else
 		_path=''
 	fi
-	exec -- env -i "$( type -P -- curl )" \
+	exec -- \
+		env -i -- \
+	"$( type -P -- curl )" \
 			--silent \
 			--compressed \
 			--output /dev/stdout \
 			--dump-header /dev/stdout \
 			"${@}" \
-			-- "http://127.9.185.194:8080/${_path}" \
+			-- \
+			"http://127.9.185.194:8080/${_path}" \
 	#
 !!
 
@@ -543,6 +551,7 @@
 	test "${#}" -eq 0
 	_outputs="$( exec -- readlink -e -- ./.outputs )"
 	mkdir -p -- "${_outputs}/binaries/release"
+	rm -f -- "${_outputs}/binaries/release/kawipiko-server-dummy"
 	"${ZRUN[@]}" ':: go / tool' \
 			build \
 			-v \
@@ -552,6 +561,17 @@
 			-o "${_outputs}/binaries/release/kawipiko-server-dummy" \
 			-- ./cmd/server-dummy.go \
 	#
-	exec env -i -- "${_outputs}/binaries/release/kawipiko-server-dummy" "${@}"
+	exec -- \
+		sudo -u root -n -E -P -- \
+		taskset -c 0,1 \
+		nice -n -19 -- \
+		ionice -c 2 -n 0 -- \
+		chrt -r 10 \
+		prlimit -n16384 -- \
+		sudo -u "${USER}" -n -E -P -- \
+		env -i -- \
+	./.outputs/binaries/release/kawipiko-server-dummy \
+		"${@}" \
+	#
 !!