new: [myc-update] add SystemMaxUse=200M for journalctl

bin/myc-update

@@ -113,6 +113,18 @@ sed -ri 's/^# (export LS_OPTIONS=.--color=auto.)/\1/;
 EOF
 fi
 
+# add option to /etc/systemd/journald.conf SystemMaxUse=200M
+journalctl_config_file="/etc/systemd/journald.conf"
+if [ -f $journalctl_config_file ]; then
+    Wrap -d "Define SystemMaxUse=200M for journalctl if param not already set" <<'EOF' || exit 1
+if grep -q "^SystemMaxUse=" $journalctl_config_file; then
+    echo "SystemMaxUse already defined " 
+else
+    echo "SystemMaxUse=200M" >> $journalctl_config_file
+    systemctl restart systemd-journald.service
+fi
+EOF
+fi
 
 for keyfile in {/root,/home/debian}/.ssh/authorized_keys; do
     [ -e "$keyfile" ] || continue