@FaheemMitha yes but they are not the same as cat file1 file2 >file.txt 2>&1

@Jesse_b I realise that.

I.e. those things do not commute.

@Fabby you could extend that table to 128 TiB ;-)

BTW “Pro tip: Always allocate SWAP at the start of a HDD as the heads need to move less on the inside of the disk.” should really be “on spinning rust, allocate swap 2/3 into the disk since that’s closest to where the heads are on average” IMO

The speed trade-off of swap changes quite a bit when you switch to SSDs capable of 6GiB/s... (That’s faster than DDR, the kind used with Pentium 4s, and similar to DDR2.)

<<<Hello\ World >/dev/chat cat

Nice, I think my subshell question might actually get me some question badges

@Jesse_b It already got me an answer badge.

=)

It's getting a lot of views fast

Maybe it hit HNQ. Haven't checked.

It did, but I have had a question hit HNQ before I think and it didn't do quite as well

Also got tweeted, apparently, according to the timeline

@derobert What? But it's actually an interesting question!

@terdon Well, I suppose the twitter isn't perfect. Every once and a while it posts a question that shouldn't be closed.

Sadly, Lua does not have an equivalent of the Python subprocess library. Which I kind of feel I've been taking for granted all these years.

Will the wonders never cease?

twitter.com/StackUnix/status/1138914113839673346

The standard Lua libraries seem to have significant limitations.

I should make an account on that bird site

Reminds one how important good libraries are.

Odd that tweet didn't onebox. I thought Twitter did.

On unrelated news, my LVM-RAID test box is working so far. I found a better way to install (just use linear LVM, convert to RAID after boot). Though the way it converts is... weird. I need to ask on the mailing list about that. E.g., going from linear to raid10 or raid6 took like 4 steps, through a lot of different RAID levels...

... and a couple of careful uses of lvresize

What is up with that background

@Jesse_b Have few enough servers here to put custom boot splashes on all of them

Seems eccentric

Probably. They all have bootsplashes that go with their names.

(That is character is Ryoko, who the server is named after)

Well, with her shirt color changed, because you couldn't see the menu over a white shirt.

... and the "more sanity" bit is actually because that's our second Ryoko. The first one was never really stable, some sort of hardware fault (bad mobo or storage controller, maybe, but only blew up like once a year)... we eventually got a replacement.

Seems a little risque for a 15 year old

@Jesse_b That is, unfortunately, tame by anime standards :-(

Yeah Japan is a pretty sexed up country, even though we were just discussing their reproduction "problem" the other day

They supposedly have very low cases of sexual assault though and it's attributed to the availability of pornography

Nice one @JeffSchaller Its beauty is in its simplicity

@Jesse_b what's that in reference to?

@Jesse_b both relatively minor problems to have, really. Could be worse. Could have our habit of shooting each other, for example. Far worse problem. Or no doubt FaheemMitha can come up with even worse problems in India.

@derobert I didn't really find it a problem when I lived in Japan lol

It is awkward though that porn is sold in virtually every store you could imagine

hah

I think the US is overly prude though for many things and we need to get over it

Still blows my mind that breastfeeding in public is a topic of discussion here

We're also weird in how different, say, one of our big blue-state cities is vs. e.g., Mississippi.

Maybe that's true in other places too, not sure, but here our electoral system gives a fair bit of political power to those rural areas, far in excess of their population.

Perhaps if I write enough answers on the memory tag, I will manage to enlighten some other user that the memory usage shown in gnome-system-monitor does not include "cache" :-P.

@sourcejedi which is a good thing IMO

I mean the fact that it doesn’t include cache, not that you need to write about it a lot ;-)

@derobert So, how are you enjoying the "very stable genius"?

@FaheemMitha In ways that would be hard to describe without violating SE's "be nice" policy :-/

@derobert I see.

# time update-grub
Generating grub configuration file ...
Found background image: /boot/Ryoko.png
Found linux image: /boot/vmlinuz-4.19.0-5-amd64
Found initrd image: /boot/initrd.img-4.19.0-5-amd64
Found linux image: /boot/vmlinuz-4.19.0-4-amd64
Found initrd image: /boot/initrd.img-4.19.0-4-amd64
done

real    7m14.379s
user    3m16.962s
sys     2m37.873s

:-(

very tempted to dpkg-divert /usr/sbin/grub-probe and replace it with a trivial script returning static output

its great that it spends, e.g., 18s calling /usr/sbin/grub-probe --device /dev/mapper/Ryoko-boot --target=partmap (well, each call, it does it multiple times) to find out the disks are gpt. And always will be.

@derobert update-grub & ? :)

Annoying thing will be when packages call it. E.g., kernel updates

@JeffSchaller: Maybe you could work getopts into your rpm function answer incase it is called as rpm -q -f

would probably end up being overly complicated code for what is probably not a worthy cause though lol

@Jesse_b I took them literally, and I narrowly avoided downvoting the Q

=)

@StephenKitt I was just reading about the proposal to require dh. What is your take on it? The DPL sent out some sort of proposal, I think.

dpkg-divert --local --rename --divert /usr/sbin/grub-probe.cache-real --add /usr/sbin/grub-probe :-)

# time update-grub
Generating grub configuration file ...
Found background image: /boot/Ryoko.png
Found linux image: /boot/vmlinuz-4.19.0-5-amd64
Found initrd image: /boot/initrd.img-4.19.0-5-amd64
Found linux image: /boot/vmlinuz-4.19.0-4-amd64
Found initrd image: /boot/initrd.img-4.19.0-4-amd64
done

real    0m3.184s
user    0m2.825s
sys     0m0.406s

Caching wrapper for the win.

And I confirmed it generates an identical grub.cfg

pastebin.com/g98R0wwX if anyone cares. It boots too :-)

@Kusalananda: another good link for your quoting answer: unix.stackexchange.com/q/171346/237982

@Jesse_b Thanks

@Kusalananda NP, I like that one and although the usual Q/A from Gilles is also really good I think that one should get more use as well

@StephenKitt gnome-system-monitor makes up for this sanity by hiding all processes except your own, unless you click into the unlabelled menu. Unsurprisingly this causes some confusion :-). If you would like to help promote the true information about gnome-system-monitor, you can vote : unix.stackexchange.com/a/524885/29483 . Only needs 11 votes to overtake the "kneejerk" answer :-P. It is extremely nice and comprehensive for that type of answer though, so I don't want to whine :-).