add diagnose command

sbin/diagnose

@@ -0,0 +1,52 @@
+#!/bin/bash -e
+
+MACHINES=""
+for nspawn in $(ls /etc/systemd/nspawn/*.nspawn); do
+    nspawn_file=$(basename $nspawn)
+    machine=${nspawn_file%.*}
+    MACHINES="$MACHINES$machine "
+done
+STARTED=""
+DEGRADED=""
+found=true
+idx=0
+while [ $found = true ]; do
+    found=false
+    echo "tentative $idx"
+    for machine in $MACHINES; do
+        if ! echo $STARTED | grep -q " $machine "; then
+            status=$(machinectl -q shell $machine /usr/bin/systemctl is-system-running 2>/dev/null || echo "not started")
+            if echo "$status" | grep -q degraded; then
+                STARTED="$STARTED $machine "
+                DEGRADED="$DEGRADED $machine"
+            elif echo "$status" | grep -q running; then
+                STARTED="$STARTED $machine "
+            else
+                found=true
+                echo "status actuel de $machine : $status"
+            fi
+        fi
+    done
+    sleep 2
+    idx=$((idx+1))
+    if [ $idx = 60 ]; then
+        break
+    fi
+done
+retcode=0
+for machine in $MACHINES; do
+    if ! echo "$STARTED" | grep -q " $machine "; then
+        echo
+        echo "========= $machine"
+        machinectl -q shell $machine /usr/bin/systemctl is-system-running 2>/dev/null || echo "not started"
+    fi
+done
+echo $DEGRADED
+for machine in $DEGRADED; do
+    echo
+    echo "========= $machine"
+    machinectl -q shell $machine /usr/bin/systemctl --state=failed --no-legend --no-pager
+    retcode=1
+done
+
+exit $retcode