## Try to retrieve not only the members of SP visitors group but also the other columns with PnPPowershell

I have this code below to retrieve all the members of the sharepoint visitors group. But the visitors group contains also other columns like job, departments etc. How can I retrieve the other columns as wel.

``Get-PnPGroupMembers -Identity "ICT Operations - Bezoekers" | select title ``

Greetings, P

## Can I travel around Europe with an expired student visa and Italian Permeso appointment receipt? I also have the expired Permeso card, will that help?

I would like to travel around Europe before I head back to India. But my student Visa has expired and my Italian stay permit is under renewal. I have the appointment receipt and the expired permit as proof. Will that be enough to travel to countries such as Germany, Budapest, France or Swiss?

## Is every subset of a RE language also RE, in general?

I’m trying to understand the question in my title in an intuitive way: If I have an RE language A, then some TM, say TM(A) accepts on it. If I take a subset of A, say A2, then all elements of A2 will cause TM(A) to halt in the accept state.

However, is it in general possible to then create a TM for A2, say TM(A2), such that A2 is the max possible set that halts TM(A2) in the accept state. Thus making A2 its language – and would this language be RE?

Thanks

## Linux bridge broken after upgrade, out of ideas / places to look (now 4.20.0-arch1-1-ARCH) (also using LXC 3.1.0)

The Question: What else should I check to try and isolate and fix this so that bridged networking to LXC ‘vm’s work again?

For debugging this problem, I’ve disabled normal LXC container startup. Instead I’m running them manually with additional logging.

lxc-start –logfile=/var/log/lxc/debug.\$ (date +%Y%m%d-%H%M%S).log –logpriority=DEBUG -F -n containername

LAN hosts can ping/talk to HOST HOST can ping/talk to LAN hosts

Two different traces

On the bridge: as expected

``tcpdump -pi bridge port 67 or port 68 or icmp[icmptype] == icmp-echo or icmp[icmptype] == icmp-echoreply  (time) IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from (mac) (oui Unknown)... ``

Yet it doesn’t get relayed/forwarded to the physical network device:

``tcpdump -i bridge_IF  port 67 or port 68 or icmp[icmptype] == icmp-echo or icmp[icmptype] == icmp-echoreply (no dhcp packets) ``

The bridge looks correct

``# brctl show bridge name     bridge id               STP enabled     interfaces br0             8000.bridgemac          no              enpNs0                                                         enpNs0                                                         vethXXXXXX ``

Everything looks mostly as expected there.

``(provided by iptables-nft) ebtables -L Bridge table: filter  Bridge chain: INPUT, entries: 0, policy: ACCEPT  Bridge chain: FORWARD, entries: 0, policy: ACCEPT  Bridge chain: OUTPUT, entries: 0, policy: ACCEPT  nft list ruleset table bridge filter {         chain INPUT {                 type filter hook input priority -200; policy accept;         }          chain FORWARD {                 type filter hook forward priority -200; policy accept;         }          chain OUTPUT {                 type filter hook output priority -200; policy accept;         } } table ip filter {         chain INPUT {                 type filter hook input priority 0; policy accept;         }          chain FORWARD {                 type filter hook forward priority 0; policy accept;         }          chain OUTPUT {                 type filter hook output priority 0; policy accept;         } } ``

Also sysctl and module config items.

``# cat /etc/sysctl.d/* net.bridge.bridge-nf-call-iptables=0 kernel.unprivileged_userns_clone=1  # lsmod | grep table nf_tables             147456  2 nft_reject_ipv6,nft_reject nfnetlink              16384  1 nf_tables x_tables               49152  1 ip6t_REJECT  # cat /etc/modprobe.d/* blacklist ip_tables blacklist iptable_filter blacklist iptable_nat blacklist ip6_tables blacklist ip6table_filter blacklist x_tables install br_netfilter ``

So far everything looks like it should work, but it isn’t.

``(container) # ip addr add x.x.x.x/y dev z (container) # ping VMHOST Works, ping reply. (container) # ping ROUTER-GW Nope, Destination Host Unreachable ``

HOWEVER, now something really unexpected happens (rather, doesn’t happen).

``(VHMOST) # ping ROUTER-GW Nope, Destination Host Unreachable Also, the connection to the VMHOST (often) times out at this point. ``

This last twist seems to point towards an issue in something that I haven’t checked so far, I’m not sure if anything in the Linux namespaces relates to this problem.

Looking at the LXC logs don’t offer anything obvious, but I copied everything that I though MIGHT have been related. Nothing actually says it, but I do wonder if the namespaces got messed up somehow.

``lxc-start VM TIMESTAMP.390 DEBUG    network - network.c:setup_hw_addr:2767 - Mac address "REDACTED" on "eth0" has been setup lxc-start VM TIMESTAMP.393 INFO     conf - conf.c:mount_entry:2039 - No such file or directory - Failed to mount "/sys/fs/fuse/connections" on "/usr/lib/lxc/rootfs/sys/fs/fuse/connections" (optional) lxc-start VM TIMESTAMP.510 INFO     utils - utils.c:lxc_mount_proc_if_needed:1239 - I am 1, /proc/self points to "1" lxc-start VM TIMESTAMP.536 WARN     conf - conf.c:lxc_setup_devpts:1641 - Invalid argument - Failed to unmount old devpts instance lxc-start VM TIMESTAMP.536 DEBUG    conf - conf.c:lxc_setup_devpts:1678 - Mount new devpts instance with options "gid=5,newinstance,ptmxmode=0666,mode=0620,max=1024" lxc-start VM TIMESTAMP.537 INFO     conf - conf.c:setup_personality:1741 - Set personality to "0x0" lxc-start VM TIMESTAMP.537 DEBUG    conf - conf.c:setup_caps:2550 - Dropped mac_admin (33) capability lxc-start VM TIMESTAMP.537 DEBUG    conf - conf.c:setup_caps:2550 - Dropped mac_override (32) capability lxc-start VM TIMESTAMP.537 NOTICE   conf - conf.c:lxc_setup:3745 - The container "VM" is set up  Linux salt 4.20.0-arch1-1-ARCH #1 SMP PREEMPT Mon Dec 24 03:00:40 UTC 2018 x86_64 GNU/Linux # pacman -Qs lxc local/lxc 1:3.1.0-1 ``

## Example of group that is also a differentiable manifold but that is not a Lie group?

I want an example of a group that is also a differentiable manifold, with the property that the group operations are smooth but at same time that is not a Lie Group

## Does Android 7 “Data Saver” also applies to metered WLAN?

The section ‘Use Android Nougat’s “Data Saver” (Android 7.0+)’ under this site ‘How to Restrict Background Data for Metered Wi-Fi Networks on Android’ mention:

Android 7.0 Nougat introduced a much more granular way to take the reins on your mobile data with a new feature called Data Saver.

Basically, this allows you to limit background data used by apps, but whitelist anything that want to have unrestricted access. This means background data is disabled for every app by default, then you can pick and choose where to grant unlimited access

And that’s all there is to it. It’s worth keeping in mind that this only applies to mobile data-all apps will remain unrestricted while on Wi-Fi.

My question is whether this ‘Data Saver’ option applies to Wi-Fi that you set to metered, meaning metered WLAN?

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## Let \$N\$ be an Abelian normal subgroup of \$G\$, if \$G/N\$ is perfect, then also \$G’\$ is perfect.

I’m reading Hans Kurzweil’s “The Theory of Finite Groups”, its 1.5.3 says:

Let $$N$$ be an Abelian normal subgroup of $$G$$. If $$G/N$$ is perfect, then also $$G’$$ is perfect.

Proof. From 1.5.1, applied to the natural epimorphism, we obtain $$G/N = (G/N)’ = G’N/N$$

and thus $$G = G’N$$. Since also $$G’/N \cap G’$$ ($$\cong G/N$$) is perfect, the same argument gives $$G’ = G”(N \cap G’)$$. It follows that $$G = G”N$$ and $$G/G” \cong N/N \cap G”$$. Now 1.5.2 implies $$G’ = G”$$ since $$N$$ is Abelian. $$\square$$

I’m a bit lost here: why $$G’/N \cap G’$$ is perfect and $$G’/N \cap G’ \cong G/N$$?