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12:15 AM
Hi guys - has anyone got experience with the Comp TIA Linux+ cert? I've got exam in 2 weeks and just found out that going through recommend ed book "cover to cover" isn't enough. I've got 2+ years experience with Linux too. Any advice would be great help. Thanks!
 
@Jatsui I haven't taken the cert and I'm not really familiar with it at all, but take a look at this free course.
cybrary stuff seems to be pretty decent, from the little I've done with it.
 
@Seth - thank you!! I'll look into it! :)
 
 
4 hours later…
4:26 AM
Guys, could someone give me a hint how a graph like this is possible dropbox.com/s/36n81jgdd9kxx66/graph-rabbitmq-kvm.png?dl=0
I mean - how does it come that LA5 and LA15 are constantly flat and > than LA1
 
4:37 AM
Meanwhile, I decided to ask a proper question unix.stackexchange.com/q/246318/31347
 
cas
5:22 AM
SE needs a killfile system.
i'm reminded why i only hang around here for a month or so and then disappear for 6 or 12 months or more. it only takes about a month to attract an arsehole stalker that makes the site unpleasant and worthless to participate in.
 
5:53 AM
@cas There is one for the chat system. Not for the main site, AFAIK.
 
cas
it needs a killfile for the Q&A sites too. where you just don't see Qs, As, and comments from selected troublesome users AND where you are also completely invisible to them on the site too.
 
6:09 AM
@cas I'd love the killfile. I'm not very happy at the thought of a block file.
The killfile is me exercising my right to not read crap. A blockfile would be me disallowing select parts of the world to read stuff I write on a public site. I shiver at the thought of certain users having access to that, to stop old hands from pointing out that they are wrong.
 
cas
blocking gives all the benefits of quitting the site due to harassment, without actually having to quit.
if i choose not to interact with someone, i'd prefer it to be total. i don't want to be secretly stalked.
 
@cas If someone is harassing you, they should be blocked from the whole site, not just blocked by you. Besides, a blocklist is ineffective - all they'd need to do is to log out and read the site anonymously.
 
cas
they can't comment anonymously or maliciously downvote.
 
Malicious downvotes should be caught by the site algorithms; it's really easy to tell when someone is targeting a particular user. As for comments - if you've killfiled them, you don't need to read it, and if you haven't, you can flag it for moderators.
This isn't me arguing for argument's sake here. I really do strongly believe that a blockfile is more harmful than good.
 
cas
i seem to have a stalker that downvotes one or two answers every few days, below the detection threshhold. dunno if it's the same one that stalks and posts trivially nitpicking comments, trying to start an argument all the time.
 
6:23 AM
@cas You could ask the mods to look into it.
 
cas
as things are, without a blockng/killfile mechanism i'm seriously considering just leaving the site for a significant time. i don't have the energy to put up with harassment, and really don't need any stress or anger in my life.
i have. they see only the individual event, not the recurring pattern. and try to be "balanced". which is exactly what stalking harassers are good at - pretending to be innocent or, worse, the innocent victim.
 
@cas yeah, I've had that issue with a user over at Serverfault. Amusingly enough, that guy also accused me (and several other long-time members) of downvote-stalking him. Which the mods dismissed, and rightly so, because I'd actually upvoted several of the guy's answer, since when he wasn't going off on a rant aobut how all the mods are evil he actually had some skills.
My recipe against downvoters is to ignore them, if it seems targeted at me as a person. Because internet points really aren't that important. As for comments trying to start an argument, that's where a killfile would really come in handy.
But on the whole, if being on the site is bringing you stress, then taking a break is probably a good idea. And I've done that, too, on occasion.
 
cas
it's easy to just ignore downvotes, they don't matter much. getting frequent trivial nitpicking comments is harder to ignore.
 
@cas Yes, this is why I would appreciate a killfile.
 
6:49 AM
I removed my question about 0.05 LA15 and 0.01 LA5 and provided a proper answer to a duplicate: serverfault.com/a/739680/45086
 
 
2 hours later…
8:26 AM
Hi terdon ,are you online? regarding List only Red Hat satellite child channel,per base channel
does any one else knows how to list only child channels in satellite server?
 
8:47 AM
@cas Whoa! If it reaches that level, do flag for moderator attention and explain what's going on. If you need to give more links than can fit in a flag message (moderators can see comments, including deleted ones, but don't have a very handy tool to track comments addressed to a particular user), ask a moderator to create a private chatroom.
FYI: I had a similar problem. I stopped responding to the problem user. It took a lot of pressure from the mods, but eventually the user stopped interacting with me. I'm getting more downvotes than I used to (strongly correlated with said user's pet peeves), but at least I have some peace of mind now.
 
9:12 AM
@cas Please don't go. We appreciate having you here.
2
 
cas
9:26 AM
@FaheemMitha thanks. up until recently, i've enjoyed being back here. i haven't decided yet what i'm going to do, but it's getting to the point where i have to stop and think "is this worth the risk?" whenever i post an answer. i come here for fun and to teach people what i know and even to learn stuff, not to get angry and stressed out.
 
@cas Yes, I understand where you're coming from.
If someone makes inappropriate comments, you should flag them.
 
cas
@Gilles i've tried that. slm spoke to him. it took him a few hours (my next answer) to do it again. personally, i'd just ignore him if i could...but i can't make him ignore me.
 
Though SE is quite slow to deal with this sort of thing, but I suppose they can't go nuclear over everything.
 
cas
i wouldn't say any of the comments are "inappropriate". just a pattern of trivial nitpicking harassment.
 
@cas Have you asked him to stop commenting? Not that it would necessarily do any good.
 
cas
9:31 AM
yep. i've tried that in case he didn't realise what he was doing. asking him to stop stalking me is, apparently, me being nasty to him.
 
@cas Huh.
SE really needs a kill file. Is there an outstanding request for this?
 
cas
harassers are good at playing the victim card. it's the first thing they do when called out.
 
@cas Yes, I see. But asking someone not to comment on your posts is a reasonable thing to do.
Well, posts + comments.
 
cas
i've tried that, i've tried flagging for mod attention, i've tried arguing back and sarcasm, i've tried telling him to go away. i've tried just ignoring him.
all with the same result: nothing.
 
@cas Yes, that sucks. For now, I assume you're ignoring him as far as possible. How long has this been going on?
 
cas
9:42 AM
i had no idea he had a problem with me until the last few days, when the recurring pattern became too obvious to ignore. so, maybe a few weeks. maybe a few days. dunno for sure. it's got worse in recent days.
 
@cas Hmm. I see.
Sometimes these people lose interest after a bit. I'd just hang in here for a bit. And try to carry on normally.
I don't have a very similar experience, but I have had a user in one of the chat rooms making passive aggressive comments (I'm not sure exactly how to express it) on things I said, often for no apparent reason. But it hasn't spilled over to any actual site. And it certainly made me uncomfortable. I don't want to be rude to a total stranger. But what's an appropriate response to that?
 
cas
i tend to give people the benefit of the doubt until they do something to remove all doubt. and then i exclude them from my life and from contact with me as much as possible. i learnt the hard way several years ago that some things are unforgivable, no matter how much you like/liked the person.
 
@cas That sounds like a good policy. Even friends can do things to hurt you. That's a hard lesson to learn.
 
cas
it can be hard with friends in real life,. but i have a lower tolerance threshhold for mere acquaintainces on the net. dropping contact with someone i've "known" for 5 minutes is no great loss.
 
@cas don't reply, and flag again
also:
I'm not fully satisfied with Monica's answer, because I don't see how “don't make it about Bob” applies here: it's a personal conflict, not a disagreement about rules or etiquette
 
cas
10:04 AM
sounds like you had it worse than i'm getting it, but my reaction is the same. i can ignore him and would be happy for mutual ignoring to be the solution but i can't make him ignore me. and, like you, i don't want to leave this site and don't think it's an acceptable solution - in fact it makes me a little angry to think i might have to.
 
Being driven away by idiots makes no sense. There are idiots everywhere. You don't want to have them affect what you do.
 
cas
it's also a bit frustrating because i've spent a lot of time on mailing lists where vigorous debate (and beyond) is both normal and expected. that's not what this site is about, though, and i make a deliberate effort to tone down that side of my personality here....the snark factor is dialed down to 0.001 or lower.
 
The Debian mailing lists can get quite aggressive, for example.
 
cas
@Gilles i just got to the "apparently i'm bob" post. right. somehow i'm not surprised.
and it doesn't "take two to tango" (that's a favourite cop-out for harassers), it just takes one to poke and poke and poke.
 
10:26 AM
I'm getting: df: ‘/media/usb1’: Transport endpoint is not connected
Any idea what direction to look here?
@cas Agreed. How hard is it to simply not interact?
 
@FaheemMitha I think it means this is a FUSE filesystem and the driver crashed
 
cas
@FaheemMitha - that depends on him. i can't force him to ignore me.
 
@Gilles Oh. I just plugged in an external USB drive. Does that use FUSE by default?
@cas I was talking about the other guy. :-)
 
@FaheemMitha it's easy if both sides agree, but not if one side insists
 
@Gilles Right. I'm talking about whoever it is that won't stop.
 
10:29 AM
@FaheemMitha Depends on the filesystem. Typically, yes for NTFS, no for FAT.
 
@Gilles I'm not sure which this is. Is there an obvious remedy to this problem?
I don't think I've seen this error before.
 
@FaheemMitha start by collecting relevant information: what type of filesystem it is, what appears in the kernel logs. Then unix.stackexchange.com/questions/ask
 
@Gilles Ok. Thank you.
@Gilles That link leads to a "not found" page here.
 
cas
10:43 AM
@Gilles - i wonder if i did this to myself. a couple of weeks ago the OP asked in comments to my answer if i knew of good books to learn more about shell or awk or something. i said to search here...and to especially look for posts by you or stephane as you both tend to provide well-researched and well-written answers. that may have been enough to trigger "bob".
 
 
1 hour later…
11:49 AM
Hi, anybody there?
 
 
2 hours later…
1:25 PM
@cas - would you say any of your comments were inappropriate?
cause i would.
and it isn't always me, either. who was it that first commented on the other's answer at that [[ question, anyway? and what have i ever done to insult you?
i don't like personal insults - i feel like offering them is demeaning to me.
 
@Max_il Hey, I am now. Please ping me next time you're around. I'm very surprised that my solution doesn't work. I am guessing you don't actually have a blank line there. I'd be happy to sort it out in chat when you get the chance.
 
 
5 hours later…
6:14 PM
Hi all :)
5
A: fsck on shutdown instead of startup

Dennis KaarsemakerWhile you can check some things, during shutdown, you cannot run fsck effectively for your root filesystem. fsck requires that the filesystem is not mounted before it can attempt repair. This is only possible during boot, while still running from initramfs.

Is the above answer really true?
Couldn't you remount the root filesystem read-only and then run fsck from the read-only filesystem?
 
@unforgettableid - not true.
 
@mikeserv Do you mean that the answer is untrue? Or that my proposed solution is invalid?
 
well, fsck could find errors but not fix them for your proposed solution.
but it is not true that the only way to fix them is initramfs. thats silly.
 
/me reads more about running fsck on a filesystem which is mounted read-only
3
Q: Linux: Force fsck of a read-only mounted filesystem?

Timothy MillerI'm developing for a headless embedded appliance, running CentOS 6.2. The user can connect a keyboard, but not a monitor, and a serial console would require opening the case, something we don't want the user to have to do. This all pretty much obviates the possibility of using a recovery USB driv...

From the answers to the latter question, it seems that you could do the check as the very last step in the shutdown procedure.
Just before sync and ACPI poweroff.
I wonder, though, whether or not the sync would be guaranteed to succeed.
 
yes. i guess so.
i think a lot of this stuff depends on the fs, you know.
 
6:22 PM
@mikeserv /sbin/fsck is filesystem-agnostic.
It can check just about any filesystem. It simply calls the appropriate actual filesystem-checking tool.
I fear that /bin/sync could move around on disk after an e2fsck, and that the kernel might then not be able to find it.
Definitely not likely, but I fear that it's possible.
 
@unforgettable - right. so that doesn't make it agnostic.
 
Or that it could move around on disk after a dosfsck. Or a btrfs repair. Or an XFS repair.
 
well, the way to do it is to put the stuff you need to complete job in a tmpfs.
then switch_root
umount, do your fsck, mount, switch_root
something like the initramfs thing - but it doesn't have to be during init.
 
Ah! Indeed! Or maybe even /sbin/pivot_root would work.
Or maybe you could do it all from a binary which is loaded into memory.
 
6:38 PM
@unforgettableid - pivot_root is an older one. systemd has a builtin switch_root, and busybox. but yeah, any of those would work. i guess the whole-shebang binary could work just as well.
 
Yes. Fork (and exec fsck); sync(); reboot(RB_POWER_OFF).
 
6:51 PM
OK. I've left a comment on the below answer stating why the answer is wrong.
5
A: fsck on shutdown instead of startup

Dennis KaarsemakerWhile you can check some things, during shutdown, you cannot run fsck effectively for your root filesystem. fsck requires that the filesystem is not mounted before it can attempt repair. This is only possible during boot, while still running from initramfs.

Dear all: If you agree that the answer is wrong, please downvote it.
@mikeserv: thanks for all the ideas!
 
@unforgettableid - good luck.
@unforgettableid - by the way, you don't have to delete initramfs at startup.
you can keep it the whole time your computer runs.
 
Intriguing!
Why don't the major distros keep it in RAM?
Maybe they could keep it in /initramfs or something.
 
instead of doing switch_root into / at the top, you can just chroot into it.
well, many of them do for some things.
some suspend options need it.
and when you go to shutdown you fall back to initramfs.
it used to be the default behavior for arch linux in some circumstances - i just cant remember which...
yeah - it was stashed in /run/initramfs.
 
Ah — I stand corrected.
 
I don't work as a sysadmin, nor do I work as a distribution developer.
The reason why I came here to ask about "fsck at shutdown" at all is because I want distros to implement the feature. Not because I want to implement the feature myself. :)
Personally, I know almost nothing at all about systemd.
 
If the executable /run/initramfs/shutdown exists systemd will use it to jump back into the initrd on shutdown./run/initramfs should be a usable initrd environment to which systemd will pivot back and the "shutdown" executable in it
oh.
well, anyway, that's one way someone else might do it.
 
Fair enough.
 
 
4 hours later…
11:20 PM
Are there already any centos 7.2 beta isos?
 
11:53 PM
@RobertL are you around? I think I gave you the wrong impression in my comment and would like to clear it up if you have a moment.
 

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