diff --git a/bkctld b/bkctld
index 80a93ef..d50e8e8 100755
--- a/bkctld
+++ b/bkctld
@@ -26,7 +26,7 @@ if [ ! -x "${LIBDIR}/bkctld-${subcommand}" ]; then
 fi
 
 case "${subcommand}" in
-    "inc" | "rm" | "check" | "stats" | "help")
+    "inc" | "rm" | "check" | "stats" | "help" | "list")
         "${LIBDIR}/bkctld-${subcommand}"
     ;;
         "init" | "is-on")
@@ -37,17 +37,14 @@ case "${subcommand}" in
     ;;
     "start" | "stop" | "reload" | "restart" | "sync" | "update" | "remove" | "firewall")
     if [ "${jail}" = "all" ]; then
-        ls "${JAILDIR}"|xargs --no-run-if-empty --max-args=1 --max-procs=0 "${LIBDIR}/bkctld-${subcommand}"
+        "${LIBDIR}/bkctld-list"|xargs --no-run-if-empty --max-args=1 --max-procs=0 "${LIBDIR}/bkctld-${subcommand}"
     else
         "${LIBDIR}/bkctld-${subcommand}" "${jail}"
     fi
     ;;
     "status")
     if [ -z "${jail}" ]; then
-        jails=$(ls "${JAILDIR}")
-        for jail in ${jails}; do
-            "${LIBDIR}/bkctld-${subcommand}" "${jail}"
-        done
+        "${LIBDIR}/bkctld-list"|xargs --no-run-if-empty --max-args=1 "${LIBDIR}/bkctld-${subcommand}"
     else
         "${LIBDIR}/bkctld-${subcommand}" "${jail}"
     fi
diff --git a/lib/bkctld-check b/lib/bkctld-check
index df3fd29..a5faced 100755
--- a/lib/bkctld-check
+++ b/lib/bkctld-check
@@ -32,8 +32,7 @@ if [ -b "${BACKUP_DISK}" ]; then
     fi
 fi
 
-jails=$(ls "${JAILDIR}")
-for jail in ${jails}; do
+for jail in $("${LIBDIR}/bkctld-list"); do
     if [ -f "${JAILDIR}/${jail}/var/log/lastlog" ]; then
         last_conn=$(stat --format=%Y "${JAILDIR}/${jail}/var/log/lastlog")
         date_diff=$(( (cur_time - last_conn) / (60*60) ))
diff --git a/lib/bkctld-inc b/lib/bkctld-inc
index 7a04d2b..3ee7fb8 100755
--- a/lib/bkctld-inc
+++ b/lib/bkctld-inc
@@ -7,8 +7,7 @@
 LIBDIR="$(dirname $0)" && . "${LIBDIR}/config"
 
 date=$(date +"%Y-%m-%d-%H")
-jails=$(ls "${JAILDIR}")
-for jail in ${jails}; do
+for jail in $("${LIBDIR}/bkctld-list"); do
     inc="${INCDIR}/${jail}/${date}"
     mkdir -p "${INCDIR}/${jail}"
     if [ ! -d "${inc}" ]; then
diff --git a/lib/bkctld-list b/lib/bkctld-list
new file mode 100755
index 0000000..f7f4f85
--- /dev/null
+++ b/lib/bkctld-list
@@ -0,0 +1,12 @@
+#!/bin/sh
+#
+# List jails
+# Usage: list
+#
+
+set -eu
+
+LIBDIR="$(dirname $0)" && . "${LIBDIR}/config"
+
+[ -d "${JAILDIR}" ] || exit 0
+find "${JAILDIR}" -mindepth 1 -maxdepth 1 -type d|sed 's!.*/!!'
diff --git a/lib/bkctld-rm b/lib/bkctld-rm
index a89c0c5..6770c57 100755
--- a/lib/bkctld-rm
+++ b/lib/bkctld-rm
@@ -19,8 +19,7 @@ if [ -f "${pidfile}" ]; then
     rm "${pidfile}"
     fi
 echo "${$}" > "${pidfile}"
-jails=$(ls "${JAILDIR}")
-for jail in ${jails}; do
+for jail in $("${LIBDIR}/bkctld-list"); do
     incs=$(ls "${INCDIR}/${jail}")
     if [ -f "${CONFDIR}/${jail}" ]; then
         keepfile="${CONFDIR}/.keep-${jail}"