diff --git a/check_updates.sh b/check_updates.sh
deleted file mode 100755
index 9699d36..0000000
--- a/check_updates.sh
+++ /dev/null
@@ -1,102 +0,0 @@
-#
-# set -o errexit -o noglob are assumed.
-#
-
-modep_cpu_get_fnames() {
-	if test_cmd pkg_${cu_name}_check_updates; then
-		pkg_${cu_name}_check_updates get_fnames;
-	fi;
-	if [ -z "${cu_fnames}" ]; then
-		if [ "${cu_url#*://github.com/*}" != "${cu_url}" ]; then
-			_cpugf_uname="${cu_url#*/github.com/}";
-			_cpugf_uname="${_cpugf_uname%%/*}";
-			_cpugf_pname="${cu_url#*/github.com/${_cpugf_uname}/}";
-			_cpugf_pname="${_cpugf_pname%%/*}";
-			cu_url_index="https://github.com/${_cpugf_uname%%/*}/${_cpugf_pname%%/*}/releases/";
-			unset _cpu_uname _cpu_pname;
-			cu_fnames="$(wget ${DEFAULT_WGET_ARGS} -qO- ${cu_url_index}	|\
-				sed -n '/<span class="\(tag-name\|css-truncate-target\)">/s/^.*<span class="\(tag-name\|css-truncate-target\)">\([a-zA-Z]\+-\|v\|\)\(.\+\)<\/span>.*$/\3/p')";
-			cu_fname_base="${cu_name}";
-			cu_fname_ext="${cu_fname#v${cu_version}.}";
-		else
-			cu_url_index="${cu_url%/*}/";
-			cu_fnames="$(wget ${DEFAULT_WGET_ARGS} -qO- "${cu_url_index}"	|\
-				sed -n '/[hH][rR][eE][fF]="[^"]\+"/s/^.*[hH][rR][eE][fF]="\([^"]\+\)".*$/\1/p')";
-		fi;
-	fi;
-	: ${cu_fname:="${cu_url##*/}"};
-	: ${cu_fname_base:="${cu_fname%%-*}"};
-	: ${cu_fname_ext:="${cu_fname#${cu_fname_base}-${cu_version}.}"};
-};
-
-modep_check_cpu_get_version() {
-	unset cu_fname_version;
-	if test_cmd pkg_${cu_name}_check_updates; then
-		pkg_${cu_name}_check_updates get_version;
-	fi;
-	if [ -z "${cu_fname_version}" ]; then
-		if [ "${cu_url#*://github.com/*}" != "${cu_url}" ]; then
-			if [ "${cu_fname#${cu_fname_base}-}" = "${cu_fname}" ]\
-			&& [ "${cu_fname%.${cu_fname_ext}}" = "${cu_fname}" ]; then
-				cu_fname_version="${cu_fname}";
-			fi;
-		elif [ "${cu_fname#${cu_fname_base}-}" != "${cu_fname}" ]\
-		&& [ "${cu_fname%.${cu_fname_ext}}" != "${cu_fname}" ]; then
-			cu_fname_version="${cu_fname#${cu_fname_base}-}";
-			cu_fname_version="${cu_fname_version%.${cu_fname_ext}}";
-		fi;
-	fi;
-};
-
-mode_check_pkg_updates() {
-	cu_name="${1}"; cu_NAME="${2}";
-	cu_version="$(get_var_unsafe PKG_${cu_NAME}_VERSION)";
-	cu_url="$(get_var_unsafe PKG_${cu_NAME}_URL)";
-	cu_url_type="$(get_var_unsafe PKG_${cu_NAME}_URL_TYPE)";
-	. vars/check_updates.vars;
-	if lmatch "${CHECK_UPDATES_SKIP}" " " "${cu_name}"; then
-		log_msg vnfo "Skipping \`${cu_name}' (set in \${CHECK_UPDATES_SKIP}.)";
-		return 0;
-	elif [ "${cu_url_type}" = "git" ]; then
-		log_msg vnfo "Skipping \`${cu_name}' (URL_TYPE is Git.)";
-		return 0;
-	elif [ -z "${cu_version}" -o -z "${cu_url}" ]; then
-		log_msg fail "Zero-length \${cu_version} and/or \${cu_url} for \`${cu_name}' (ignored.)";
-		return 0;
-	else
-		log_msg vnfo "Checking ${cu_name} v${cu_version} for updates.";
-		modep_cpu_get_fnames; _cpu_versions="";
-	fi;
-	for cu_fname in ${cu_fnames}; do
-		cu_fname="${cu_fname##*/}"; modep_check_cpu_get_version;
-		if [ -z "${cu_fname_version}" ]; then
-			continue;
-		elif ! echo "${cu_fname_version}" | grep -Eq '^[-_.0-9a-zA-Z]+$'	\
-		||   echo "${cu_fname_version}" | grep -Eq '^[_.a-zA-Z]+'; then
-			log_msg varn "Skipping \`${cu_fname_version}' (invalid version.)";
-		else
-			_cpu_versions="${_cpu_versions:+${_cpu_versions} }${cu_fname_version}";
-		fi;
-	done;
-	if [ -z "${_cpu_versions}" ]; then
-		log_msg warn "No versions available for \`${cu_name}' (Filename URL: ${cu_url}, index URL: ${cu_url_index}).";
-	else
-		_cpu_versions="$(echo "${_cpu_versions}"	|\
-			sed 's/ /\n/g' | sort -rV | uniq	|\
-			head -n${CHECK_UPDATES_SHOW_NEW:-6}	|\
-			paste -d" " -s)";
-		if test_cmd pkg_${cu_name}_check_updates; then
-			pkg_${cu_name}_check_updates version_fixup;
-		fi;
-		if [ "${_cpu_versions%% *}" != "${cu_version}" ]; then
-			log_msg info "New release(s) available for ${cu_name} v${cu_version}: ${_cpu_versions}.";
-		else
-			log_msg vnfo "${cu_name} v${cu_version} is up to date.";
-		fi;
-	fi;
-	unset	cu_fname cu_fname_base cu_fname_ext cu_fnames cu_fname_version	\
-		cu_name cu_url cu_url_fname cu_url_fname_base cu_url_fname_ext	\
-		cu_url_index cu_url_type cu_version _cpu_versions;
-};
-
-# vim:filetype=sh
diff --git a/etc/rotate_archives.sh b/etc/rotate_archives.sh
new file mode 100755
index 0000000..546fdf0
--- /dev/null
+++ b/etc/rotate_archives.sh
@@ -0,0 +1,57 @@
+#!/bin/sh
+
+glob() { set +o noglob; echo ${@}; set -o noglob; };
+map() { local _ifs="${IFS}" _sep="${1}"; shift; IFS="${_sep}"; echo "${*}"; IFS="${_ifs}"; };
+rc() { echo "${@}"; "${@}"; };
+
+rotate_build() {
+	local _build_dname="${1}" _hostname="${2}" _limit="${3}";
+	local _dist_dates="";
+	for _dist_fname in $(glob			\
+			${_build_dname}/*.tar.*		\
+			${_build_dname}/*.zip		\
+			${_build_dname}/*.zip.*); do
+		if [ -e "${_dist_fname}" ]; then
+			_dist_date="${_dist_fname#*@${_hostname}-}";
+			_dist_date="${_dist_date%.tar.*}";
+			_dist_date="${_dist_date%.zip}";
+			_dist_date="${_dist_date%.zip.*}";
+			_dist_date="${_dist_date%-[0-9][0-9]-[0-9][0-9]-[0-9][0-9]}";
+			_dist_dates="${_dist_dates:+${_dist_dates} }${_dist_date}";
+		fi;
+	done;
+	if [ -n "${_dist_dates}" ]; then
+		rotate_build_dates "${_build_dname}" "${_dist_dates}" "${_limit}";
+	fi;
+};
+
+rotate_build_dates() {
+	local _build_dname="${1}" _dist_dates="${2}" _limit="${3}";
+	local _dist_dates_count="" _dist_dates_count_limit="" _dist_fname="" _nl="
+";	_dist_dates="$(map "${_nl}" ${_dist_dates} | sort | uniq)";
+	_dist_dates_count="$(echo "${_dist_dates}" | wc -l)";
+	if [ "${_dist_dates_count}" -gt "${_limit}" ]; then
+		_dist_dates_count_limit=$((${_dist_dates_count}-${_limit}));
+		_dist_dates="$(echo "${_dist_dates}" |\
+				sed -n "1,${_dist_dates_count_limit}p")";
+		for _dist_date in ${_dist_dates}; do
+			for _dist_fname in $(glob	\
+					${_build_dname}/*-${_dist_date}-*.tar.xz*); do
+				rc rm -f "${_dist_fname}";
+			done;
+		done;
+	fi;
+};
+
+rotate_builds() {
+	local _build_dnames="${1}" _limit="${2}";
+	local _hostname="$(hostname)";
+	for _build_dname in ${_build_dnames}; do
+		rotate_build "${_build_dname}" "${_hostname}" "${_limit}";
+	done;
+};
+
+set -o errexit -o noglob;
+rotate_builds "${1}" "${2:-3}";
+
+# vim:noexpandtab sw=8 ts=8 
diff --git a/rotate_tarballs.sh b/rotate_tarballs.sh
deleted file mode 100755
index f4efaee..0000000
--- a/rotate_tarballs.sh
+++ /dev/null
@@ -1,55 +0,0 @@
-#!/bin/sh
-#
-set -o errexit -o noglob;
-
-glob() { set +o noglob; echo ${@}; set -o noglob; };
-map() { local _ifs="${IFS}" _sep="${1}"; shift; IFS="${_sep}"; echo "${*}"; IFS="${_ifs}"; };
-rc() { echo "${@}"; "${@}"; };
-
-rotate_build() {
-	local _build_dname="${1}" _hostname="${2}" _limit="${3}";
-	local _dist_dates="";
-	for _dist_fname in $(glob			\
-			${_build_dname}/*.tar.xz	\
-			${_build_dname}/*.tar.xz.asc); do
-		if [ -e "${_dist_fname}" ]; then
-			_dist_date="${_dist_fname#*@${_hostname}-}";
-			_dist_date="${_dist_date%.tar.xz*}";
-			_dist_date="${_dist_date%-[0-9][0-9]-[0-9][0-9]-[0-9][0-9]}";
-			_dist_dates="${_dist_dates:+${_dist_dates} }${_dist_date}";
-		fi;
-	done;
-	if [ -n "${_dist_dates}" ]; then
-		rotate_build_dates "${_build_dname}" "${_dist_dates}" "${_limit}";
-	fi;
-};
-
-rotate_build_dates() {
-	local _build_dname="${1}" _dist_dates="${2}" _limit="${3}";
-	local _dist_dates_count="" _dist_dates_count_limit="" _dist_fname="" _nl="
-";	_dist_dates="$(map "${_nl}" ${_dist_dates} | sort | uniq)";
-	_dist_dates_count="$(echo "${_dist_dates}" | wc -l)";
-	if [ "${_dist_dates_count}" -gt "${_limit}" ]; then
-		_dist_dates_count_limit=$((${_dist_dates_count}-${_limit}));
-		_dist_dates="$(echo "${_dist_dates}" |\
-				sed -n "1,${_dist_dates_count_limit}p")";
-		for _dist_date in ${_dist_dates}; do
-			for _dist_fname in $(glob	\
-					${_build_dname}/*-${_dist_date}-*.tar.xz*); do
-				rc rm -f "${_dist_fname}";
-			done;
-		done;
-	fi;
-};
-
-rotate_builds() {
-	local _build_dnames="${1}" _limit="${2}";
-	local _hostname="$(hostname)";
-	for _build_dname in ${_build_dnames}; do
-		rotate_build "${_build_dname}" "${_hostname}" "${_limit}";
-	done;
-};
-
-rotate_builds "${1}" "${2:-3}";
-
-# vim:filetype=sh noexpandtab sw=8 ts=8