diff --git a/CHANGELOG.md b/CHANGELOG.md
index 88b1c2e..ea4c32f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -18,6 +18,19 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Security
 
+## [2.7.0] - 2020-11-13
+
+### Added
+
+* bkctld: add a [-f|--force] option to remove confirmation on some commands
+* bkctld-remove: confirmation before removal of jails if not in force mode
+* bkctld-rm: delete empty jails in incs directory
+
+### Changed
+
+* Better help message composition and formating
+* bkctld-rm: list jails from incs directory
+
 ## [2.6.0] - 2020-10-07
 
 ### Added
@@ -58,7 +71,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 * bkctld-update: start jail after upgrade if it was started before
 * bkctld: don't replace SSH host keys when creating/updating a jail
 * Split check into check-jails and check-setup
-* bkctld-check-jails checks if jails 
+* bkctld-check-jails checks if jails
 * bkctld-check-setup checks if the partition is mounted and writable, if firewall is configured and if all jails are in their expected state
 * create new ssh keys for new jails instead of copying those from the host
 
diff --git a/bkctld b/bkctld
index 03342a8..07d399a 100755
--- a/bkctld
+++ b/bkctld
@@ -36,6 +36,10 @@ fi
 
 # Parse options
 # based on https://gist.github.com/deshion/10d3cb5f88a21671e17a
+if [ "$#" = "0" ]; then
+    show_help
+    exit 1
+fi
 while :; do
     case $1 in
         -h|-\?|--help)
@@ -46,6 +50,9 @@ while :; do
             show_version
             exit 0
             ;;
+        -f|--force)
+            FORCE=1
+            ;;
         *)
             # Default case: If no more options then break out of the loop.
             break
@@ -81,7 +88,7 @@ case "${subcommand}" in
             show_help
             exit 1
         else
-            "${LIBDIR}/bkctld-${subcommand}" "${jail_name}" 
+            "${LIBDIR}/bkctld-${subcommand}" "${jail_name}"
         fi
     ;;
     "key" | "port" | "ip")
diff --git a/lib/bkctld-check-incs b/lib/bkctld-check-incs
index d862e70..1a1f5c3 100755
--- a/lib/bkctld-check-incs
+++ b/lib/bkctld-check-incs
@@ -1,6 +1,6 @@
 #!/bin/sh
 #
-# Run check on all expected incs of all jails
+# Description: Run check on all expected incs of all jails
 # Usage: check-incs all
 #
 
diff --git a/lib/bkctld-check-jails b/lib/bkctld-check-jails
index 531ab27..aafa456 100755
--- a/lib/bkctld-check-jails
+++ b/lib/bkctld-check-jails
@@ -1,6 +1,6 @@
 #!/bin/sh
 #
-# Run check on jails (NRPE output)
+# Description: Run check on jails (NRPE output)
 # Usage: check-jails
 #
 
diff --git a/lib/bkctld-check-last-incs b/lib/bkctld-check-last-incs
index c73e302..e0cafa1 100755
--- a/lib/bkctld-check-last-incs
+++ b/lib/bkctld-check-last-incs
@@ -1,6 +1,6 @@
 #!/bin/sh
 #
-# Run check on the last inc of all jails
+# Description: Run check on the last inc of all jails
 # Usage: check-incs last
 #
 
diff --git a/lib/bkctld-check-setup b/lib/bkctld-check-setup
index a66b357..d2632a0 100755
--- a/lib/bkctld-check-setup
+++ b/lib/bkctld-check-setup
@@ -1,7 +1,7 @@
 #!/bin/sh
 #
-# Run check on jails (NRPE output)
-# Usage: check-setup
+# Description: Run check on jails (NRPE output)
+# Usage: check setup
 #
 
 # shellcheck source=./includes
diff --git a/lib/bkctld-firewall b/lib/bkctld-firewall
index 2c1293f..7cb434c 100755
--- a/lib/bkctld-firewall
+++ b/lib/bkctld-firewall
@@ -1,7 +1,7 @@
 #!/bin/sh
 #
-# Update firewall rules of <jailname> or all
-# Usage: firewall <jailname>|all
+# Description: Update firewall rules
+# Usage: firewall [<jailname>|all]
 #
 
 # shellcheck source=./includes
diff --git a/lib/bkctld-inc b/lib/bkctld-inc
index 7c81404..d29c752 100755
--- a/lib/bkctld-inc
+++ b/lib/bkctld-inc
@@ -1,6 +1,6 @@
 #!/bin/sh
 #
-# Make incremental inc of all jails
+# Description: Make dated copies (incs) of jails
 # Usage: inc
 #
 
diff --git a/lib/bkctld-init b/lib/bkctld-init
index a7dec49..6b52815 100755
--- a/lib/bkctld-init
+++ b/lib/bkctld-init
@@ -1,6 +1,6 @@
 #!/bin/sh
 #
-# Init jail <jailname>
+# Description: Initialize a new jail
 # Usage: init <jailname>
 #
 
diff --git a/lib/bkctld-ip b/lib/bkctld-ip
index dae1913..83e8e33 100755
--- a/lib/bkctld-ip
+++ b/lib/bkctld-ip
@@ -1,6 +1,6 @@
 #!/bin/sh
 #
-# Set or get allowed(s) ip(s) of <jailname>
+# Description: Set or get allowed(s) ip(s)
 # Usage: ip <jailname> [<ip>|all]
 #
 
diff --git a/lib/bkctld-is-on b/lib/bkctld-is-on
index 36deafb..9c2b904 100755
--- a/lib/bkctld-is-on
+++ b/lib/bkctld-is-on
@@ -1,6 +1,6 @@
 #!/bin/sh
 #
-# Check if a jail is on or not
+# Description: Check if a SSH server is on (exit 0) or not (exit 100)
 # Usage: is-on <jailname>
 #
 
diff --git a/lib/bkctld-key b/lib/bkctld-key
index bfe6e51..393afd7 100755
--- a/lib/bkctld-key
+++ b/lib/bkctld-key
@@ -1,6 +1,6 @@
 #!/bin/sh
 #
-# Set or get ssh pubic key of <jailname>
+# Description: Set or get ssh pubic key
 # Usage: key <jailname> [<keyfile>]
 #
 
diff --git a/lib/bkctld-list b/lib/bkctld-list
index 3815871..10b11bf 100755
--- a/lib/bkctld-list
+++ b/lib/bkctld-list
@@ -1,6 +1,6 @@
 #!/bin/sh
 #
-# List jails
+# Description: List jails
 # Usage: list
 #
 
diff --git a/lib/bkctld-port b/lib/bkctld-port
index dffe4e9..2b1f17d 100755
--- a/lib/bkctld-port
+++ b/lib/bkctld-port
@@ -1,6 +1,6 @@
 #!/bin/sh
 #
-# Set or get ssh port of <jailname>
+# Description: Set or get SSH port
 # Usage: port <jailname> [<port>|auto]
 #
 
diff --git a/lib/bkctld-reload b/lib/bkctld-reload
index 5feec92..1036618 100755
--- a/lib/bkctld-reload
+++ b/lib/bkctld-reload
@@ -1,7 +1,7 @@
 #!/bin/sh
 #
-# Reload jail <jailname> or all
-# Usage: reload <jailname>|all
+# Description: Reload SSH server
+# Usage: reload [<jailname>|all]
 #
 
 # shellcheck source=./includes
diff --git a/lib/bkctld-remove b/lib/bkctld-remove
index 7b4b152..94d6b19 100755
--- a/lib/bkctld-remove
+++ b/lib/bkctld-remove
@@ -1,7 +1,9 @@
 #!/bin/sh
 #
-# Remove jail <jailname> or all
+# Description: Remove jail and all dated copies (incs)
 # Usage: remove <jailname>|all
+# Return codes:
+# * 101 : jail removal aborted
 #
 
 # shellcheck source=./includes
@@ -16,6 +18,28 @@ incs_path=$(incs_path "${jail_name}")
 
 test -d "${jail_path}" || error "${jail_name}: jail not found" 2
 
+if [ "${FORCE}" != "1" ]; then
+    answer=""
+    while :; do
+        printf "> Are you sure you want to delete jail \`%s'? [Y,n,?] " "${jail_name}"
+        read -r answer
+        case $answer in
+            [Yy]|"" )
+                break
+                ;;
+            [Nn] )
+                tty -s && echo "Abort." >&2
+                exit 101
+                ;;
+            * )
+                printf "y - yes, execute actions and exit\n"
+                printf "n - no, don't execute actions and exit\n"
+                printf "? - print this help\n"
+                ;;
+        esac
+    done
+fi
+
 "${LIBDIR}/bkctld-is-on" "${jail_name}" && "${LIBDIR}/bkctld-stop" "${jail_name}"
 
 rm -f "${CONFDIR}/${jail_name}"
diff --git a/lib/bkctld-restart b/lib/bkctld-restart
index 7aaa314..9394b9a 100755
--- a/lib/bkctld-restart
+++ b/lib/bkctld-restart
@@ -1,7 +1,7 @@
 #!/bin/sh
 #
-# Restart jail <jailname> or all
-# Usage: restart <jailname>|all
+# Description: Restart SSH server
+# Usage: restart [<jailname>|all]
 #
 
 set -eu
diff --git a/lib/bkctld-rm b/lib/bkctld-rm
index 59035da..7b1df54 100755
--- a/lib/bkctld-rm
+++ b/lib/bkctld-rm
@@ -1,6 +1,6 @@
 #!/bin/sh
 #
-# Remove old incremtal inc of all jails
+# Description: Remove old dated copies (incs) according to policy
 # Usage: rm
 #
 
@@ -84,6 +84,21 @@ delete_inc_ext4() {
     fi
 
 }
+delete_empty_inc() {
+    jail_name=$1
+
+    incs_path=$(incs_path "${jail_name}")
+    empty_incs_list=$(find "${incs_path}" -mindepth 0 -maxdepth 0 -type d -empty)
+
+    for empty_inc in ${empty_incs_list}; do
+        if dry_run; then
+            echo "[dry-run] Delete empty \`${empty_inc}'"
+        else
+            rmdir "${empty_inc}"
+            notice "Delete empty \`${empty_inc}' : OK"
+        fi
+    done
+}
 
 lock_file="${LOCKDIR}/rm-global.lock"
 # shellcheck disable=SC2064
@@ -92,7 +107,9 @@ trap "rm -f ${lock_file}; cleanup_tmp;" 0
 kill_or_clean_lockfile "${lock_file}"
 new_lock_file "${lock_file}"
 
-jails_list=$(jails_list)
+# We list jails in "incs" directory, not in "jails" directory
+# so we can clean old incs after a jail is archived
+jails_list=$(jails_with_incs_list)
 jails_total=$(echo $jails_list | wc -w)
 jails_count=0
 
@@ -102,7 +119,6 @@ for jail_name in ${jails_list}; do
     # If no incs policy is found, we don't remove incs
     if [ -n "${incs_policy_file}" ]; then
         # shellcheck disable=SC2046
-        
         incs_to_delete=$(incs_to_delete "${jail_name}" "${incs_policy_file}")
         incs_total=$(echo ${incs_to_delete} | wc -w)
         incs_count=0
@@ -130,6 +146,8 @@ for jail_name in ${jails_list}; do
     else
         notice "Skip jail \`${jail_name}' : incs policy is missing"
     fi
+    # Delete empty incs directory for jail
+    delete_empty_inc "${jail_name}"
 done
 
 # Remove the lock file and cleanup tmp files
diff --git a/lib/bkctld-start b/lib/bkctld-start
index a0d6f9c..343e2db 100755
--- a/lib/bkctld-start
+++ b/lib/bkctld-start
@@ -1,6 +1,6 @@
 #!/bin/sh
 #
-# Start jail <jailname> or all
+# Description: Start SSH Server
 # Usage: start <jailname>|all
 #
 
diff --git a/lib/bkctld-stats b/lib/bkctld-stats
index c619b2d..8e69f12 100755
--- a/lib/bkctld-stats
+++ b/lib/bkctld-stats
@@ -1,6 +1,6 @@
 #!/bin/sh
 #
-# Make and display stats on jails (size, lastconn)
+# Description: Display stats on jails (size, last connection…)
 # Usage: stats
 #
 
diff --git a/lib/bkctld-status b/lib/bkctld-status
index 80e6769..e815927 100755
--- a/lib/bkctld-status
+++ b/lib/bkctld-status
@@ -1,7 +1,7 @@
 #!/bin/sh
 #
-# Print status of <jailname> (default all jail)
-# Usage: status [<jailname>]
+# Description: Display status of SSH server
+# Usage: status [<jailname>|all]
 #
 
 # shellcheck source=./includes
diff --git a/lib/bkctld-stop b/lib/bkctld-stop
index 2d8a76f..fa8809d 100755
--- a/lib/bkctld-stop
+++ b/lib/bkctld-stop
@@ -1,7 +1,7 @@
 #!/bin/sh
 #
-# Stop jail <jailname> or all
-# Usage: stop <jailname>|all
+# Description: Stop SSH server
+# Usage: stop [<jailname>|all]
 #
 
 # shellcheck source=./includes
@@ -21,7 +21,7 @@ pid=$(cat "${jail_path}/${SSHD_PID}")
 
 pkill --parent "${pid}"
 
-if kill "${pid}"; then 
+if kill "${pid}"; then
     notice "Stop jail \`${jail_name}' : OK [${pid}]"
 
     umount --lazy --recursive "${jail_path}/dev"
diff --git a/lib/bkctld-sync b/lib/bkctld-sync
index df18917..e982af3 100755
--- a/lib/bkctld-sync
+++ b/lib/bkctld-sync
@@ -1,7 +1,7 @@
 #!/bin/sh
 #
-# Sync jail <jailname> or all to another node
-# Usage: sync <jailname>|all
+# Description: Sync jail configuration and state on other node(s)
+# Usage: sync [<jailname>|all]
 #
 
 # shellcheck source=./includes
diff --git a/lib/bkctld-update b/lib/bkctld-update
index 3309030..c6af12a 100755
--- a/lib/bkctld-update
+++ b/lib/bkctld-update
@@ -1,7 +1,7 @@
 #!/bin/sh
 #
-# Update jail <jailname> or all
-# Usage: update <jailname>|all
+# Description: Update binaries and libraries
+# Usage: update [<jailname>|all]
 #
 
 # shellcheck source=./includes
diff --git a/lib/bkctld-upgrade-config b/lib/bkctld-upgrade-config
index 054ade4..e835f7b 100644
--- a/lib/bkctld-upgrade-config
+++ b/lib/bkctld-upgrade-config
@@ -1,7 +1,7 @@
 #!/bin/sh
 #
-# Upgrade chroot components for jail <jailname> or all
-# Usage: upgrade-config <jailname>|all
+# Description: Upgrade configuration to new convention
+# Usage: upgrade-config [<jailname>|all]
 #
 
 # shellcheck source=./includes
diff --git a/lib/includes b/lib/includes
index 2196e5e..c5870d9 100755
--- a/lib/includes
+++ b/lib/includes
@@ -2,11 +2,11 @@
 #
 # Config for bkctld
 #
+# shellcheck disable=SC2034
 
 [ -f /etc/default/bkctld ] && . /etc/default/bkctld
 
-# shellcheck disable=SC2034
-VERSION="2.6.0"
+VERSION="2.7.0"
 
 LIBDIR=${LIBDIR:-/usr/lib/bkctld}
 CONFDIR="${CONFDIR:-/etc/evobackup}"
@@ -27,6 +27,7 @@ LOGLEVEL="${LOGLEVEL:-6}"
 CRITICAL="${CRITICAL:-48}"
 WARNING="${WARNING:-24}"
 DUC=$(command -v duc-nox || command -v duc)
+FORCE="${FORCE:-0}"
 
 show_version() {
     cat <<END
@@ -51,11 +52,10 @@ Options
 Subcommands:
 EOF
 
-    for subcommand in ${LIBDIR}/bkctld-*; do
-        name=$(basename "${subcommand}"|sed 's/^bkctld-//')
-        desc=$(grep -E "^#" "${subcommand}"|sed -n '3p'|sed "s/^# //")
-        usage=$(grep -E "^# Usage: ${name}" "${subcommand}"|sed "s/^# Usage: ${name}//")
-        printf "    %- 15s %- 30s %- 40s\n" "${name}" "${usage}" "${desc}"
+    for filename in ${LIBDIR}/bkctld-*; do
+        desc=$(grep -E "^# Description:" "${filename}"|sed "s/^# Description: //")
+        usage=$(grep -E "^# Usage:" "${filename}"|sed "s/^# Usage: //")
+        printf "    %- 32s %s\n" "${usage}" "${desc}"
     done
 
     printf "\n"
@@ -129,12 +129,16 @@ is_btrfs() {
     test $inode -eq 256
 }
 
-# Returns the list of all jails
+# Returns the list of jails found in the "jails" directory (default)
 jails_list() {
     # TODO: try if this command works the same :
     # find "${JAILDIR}" -mindepth 1 -maxdepth 1 -type d -printf '%f\n'
     find "${JAILDIR}" -mindepth 1 -maxdepth 1 -type d | sed 's!.*/!!' | sort -h
 }
+# Returns the list of jails found in the "incs" directory
+jails_with_incs_list() {
+    find "${INCDIR}" -mindepth 1 -maxdepth 1 -type d | sed 's!.*/!!' | sort -h
+}
 # Returns the complete path of a jail
 jail_path() {
     jail_name=${1:?}
@@ -180,6 +184,10 @@ incs_list() {
     jail_name=${1:?}
     find "$(incs_path "${jail_name}")" -mindepth 1 -maxdepth 1 -type d | sed 's!.*/!!' | sort -h
 }
+# Return the list of empty incs directories
+empty_incs_list() {
+    find ${INCDIR} -mindepth 1 -maxdepth 1 -type d -empty
+}
 current_jail_incs_policy_file() {
     jail_name=${1:?}
 
@@ -380,8 +388,8 @@ is_mounted_inside_jail() {
     target=${1:?}
 
     # TODO: try to find why it doesn't work with this findmnt(8) command
-    # findmnt --target "${target}" --tab-file /proc/mounts 
-    grep -q "${target}" /proc/mounts 
+    # findmnt --target "${target}" --tab-file /proc/mounts
+    grep -q "${target}" /proc/mounts
 }
 
 mount_jail_fs() {
diff --git a/test/incs.bats b/test/incs.bats
index 380d990..8f17400 100644
--- a/test/incs.bats
+++ b/test/incs.bats
@@ -87,4 +87,39 @@ load test_helper
     assert_failure
 }
 
+@test "All incs are removed by 'rm' with empty inc policy" {
+    # Setup empty incs policy
+    echo "" > "${CONFDIR}/${JAILNAME}.d/incs_policy"
+    inc_path="${INCSPATH}/${INC_NAME}"
+
+    # Create the inc
+    /usr/lib/bkctld/bkctld-inc
+    # Inc should be removed
+    run test -d "${inc_path}"
+    assert_success
+
+    # Remove incs
+    /usr/lib/bkctld/bkctld-rm
+    # Inc should be removed
+    run test -d "${inc_path}"
+    assert_failure
+}
+
+@test "empty inc directory are removed" {
+    # Create an inc
+    /usr/lib/bkctld/bkctld-inc
+    # no inc should be kept
+    echo '' > "${CONFDIR}/${JAILNAME}.d/incs_policy"
+    
+    # The inc directory is present
+    run test -d "${INCSPATH}"
+    assert_success
+    
+    /usr/lib/bkctld/bkctld-rm
+
+    # The inc directory is absent
+    run test -d "${INCSPATH}"
+    assert_failure
+}
+
 # TODO: add many tests for incs (creation and removal)
diff --git a/test/test_helper.bash b/test/test_helper.bash
index 92de516..386180b 100644
--- a/test/test_helper.bash
+++ b/test/test_helper.bash
@@ -20,7 +20,7 @@ setup() {
 
 teardown() {
     remove_variable "/etc/default/bkctld" "BACKUP_DISK"
-    /usr/lib/bkctld/bkctld-remove "${JAILNAME}" && rm -rf "${INCSPATH}"
+    FORCE=1 /usr/lib/bkctld/bkctld-remove "${JAILNAME}" && rm -rf "${INCSPATH}"
 }
 
 random_jail_name() {